RE-E92003/2023-10-30Replaces:2021-08-11
Axial piston variable
pump
A4VG series 32
Europe
Features
▶Integratedauxiliarypumpforboostandpilotoilsupply
▶Flowdirectionchangeswhentheswashplateismoved
throughtheneutralposition
▶High-pressurereliefvalveswithintegratedboostfunction
▶Withadjustablepressurecut-offasstandard
▶Boost-pressurereliefvalve
▶Throughdriveformountingoffurtherpumpsuptosamesize
▶Largevarietyofcontrols
▶Swashplatedesign
▶High-pressurepumpforapplicationsinclosedcircuits▶Size28to125
▶Nominalpressure400bar▶Maximumpressure450bar
Contents
Typecode2Hydraulicuids6Workingpressurerange8Technicaldata1
0HD–Proportionalcontrol,hydr.,pilot-pressurerelated13
HW–Proportionalcontrol,hydr.,mechanicalservo15
DA–Automaticcontrol,speedrelated17
DG–Hydrauliccontrol,directoperated20
EP–Proportionalcontrol,electric21EZ–Two-pointcontrol,electric23
ET–Electriccontrol,directoperated24Dimensions,size2828
Dimensions,size4034Dimensions,size5640Dimensions,size7146
Dimensions,size9052Dimensions,size12557
Dimensions,throughdrive64Overviewofmountingoptions74
CombinationpumpsA4VG+A4VG75High-pressurereliefvalves76
Pressurecut-off77Mechanicalstrokelimiter78
StrokingchamberpressureportX
3
andX
4
79
MeasuringportsM
A
,M
B
,M
H
80Filtration/
Externalboostpressuresupply81Connectorforsolenoids86
Rotaryinchvalve87Installationdimensionsforcouplingassembly88
Installationinstructions89Projectplanningnotes92Safetyinstructions
93
RE-E92003/2023-10-30,BoschRexrothAG
BoschRexrothAG,RE-E92003/2023-10-30
2 A4VG series 32 |Axialpistonvariablepump
Typecode
Axial piston unit
01 Swashplatedesign,variable,nominalpressure400bar,maximumpressure450bar
A4V
Operating mode
02 Pump,closedcircuit
G
Size (NG)
03 Geometricdisplacement,see"Technicaldata"onpage10
28 40 56 71 90 125
Control device 28 40 56 71 90 125
04 Proportional
control
hydraulic
pilot-pressurerelated,withinletltrationinP
1)
mechanicalservo
● ● ● ● ● ● HD3
● ● ● ● ● ● HW
Automaticcontrol,speedrelated U=12V
● ● ● ● ● ● DA1
U=24V
● ● ● ● ● ● DA2
Hydrauliccontrol,directoperated
● ● ● ● ● ● DG
Proportional
control
electric
withproportionalsolenoid
withinletltrationinP
1)
U=12V
● ● ● ● ● ● EP3
U=24V
● ● ● ● ● ● EP4
Two-pointcontrol,
electric
withswitchingsolenoid U=12V
● ● ● ● ● ● EZ1
U=24V
● ● ● ● ● ● EZ2
Electroniccontrol directoperatedbytwopressurereducingvalves;
preparedforBODASsoftware
2)
U=12V
● ● ‒ ‒ ‒ ● ETA
U=24V
● ● ‒ ‒ ‒ ● ETB
directoperatedbytwopressurereducingvalves(FTDRE) U=12V
● ● ‒ ‒ ‒ ‒ ET3
U=24V
● ● ‒ ‒ ‒ ‒ ET4
directoperatedbytwopressurereducingvalves(DRE5) U=12V ‒ ‒ ‒ ‒ ‒ ● ET7
U=24V ‒ ‒ ‒ ‒ ‒ ● ET8
Pressure cut-off 28 40 56 71 90 125
05 Withoutpressurecut-off(withoutcode)
3)
● ● ‒ ‒ ‒ ●
Pressurecut-off
● ● ● ● ● ● D
Neutral position switch 28 40 56 71 90 125
06 Withoutneutralpositionswitch(withoutcode)
● ● ● ● ● ●
Neutralpositionswitch(onlyforHWcontrol)
● ● ● ● ● ● L
Mechanical stroke limiter 28 40 56 71 90 125
07 Withoutmechanicalstrokelimiter(withoutcode)
● ● ● ● ● ●
Mechanicalstrokelimiter,externallyadjustable
● ● ● ● ● ● M
Stroking chamber pressure port 28 40 56 71 90 125
08 WithoutstrokingchamberpressureportX
3
,X
4
(withoutcode)
● ● ● ● ● ●
StrokingchamberpressureportX
3
,X
4
● ● ● ● ● ● T
●
= Available
○
= Onrequest – = Notavailable = Preferredprogram
1) Sizes28to71aredesignedwithinletltrationinPandX
1
/X
2
2)
TheETA/ETBcontrolisonlypermissibleincombinationwithport
plate22or30,seeposition15"Portthread:MetricwithO-ring
sealfollowingISO6149".
3) Versionnotavailableforallportplatevariants,pleasecontactus.
Type code
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22
A4V G / 32 ‒ N
RE-E92003/2023-10-30,BoschRexrothAG
3 Axialpistonvariablepump | A4VG series 32
Typecode
DA control valve HD HW DG DA EP EZ ET
09 WithoutDAcontrolvalve
● ● ● ‒ ● ● ● 1
DAcontrolvalve,xedsetting
● ● ● ● ● ‒ ‒ 2
DAcontrolvalve,mechanicallyadjustable,
with
positionlever
directionofactuation,clockwise
● ● ● ● ● ‒ ‒ 3R
directionofactuation,
counter-clockwise
● ● ● ● ● ‒ ‒ 3L
DAcontrolvalve,xedsetting,portsforpilotcontroldevice
● ● ‒ ● ● ‒ ‒ 7
DAcontrolvalve,xedsettingandhydraulicinchvalvemounted,
control
withhydraulicuid,mineraloil-based
‒ ‒ ‒ ● ‒ ‒ ‒ 8
Series
10 Series3,index2
32
Direction of rotation 28 40 56 71 90 125
11 Viewedondriveshaft clockwise
● ● ● ● ● ● R
counter-clockwise
● ● ● ● ● ● L
Sealing material 28 40 56 71 90 125
12 NBR(nitrilerubber),shaftsealmadeofFKM(uorocarbonrubber)
● ● ● ● ● ● N
Drive shaft 28 40 56 71 90 125
13 Splinedshaft
DIN
5480
forsinglepump
● ● ● ● ● ● Z
forcombinationpump–1stpump
–
4)
● ● ● ● ● A
Splinedshaft
ANSI
B92.1a
forsinglepump
● ● ● ● ● ● S
forcombinationpump–1stpump
–
5)
–
5)
● ● –
5)
● T
onlyforcombinationpump–2ndpump
– ● – – ● – U
Mounting ange 28 40 56 71 90 125
14 SAEJ744 2-hole
● ● ● – – – C
4-hole
– – – – – – D
2+4-hole
– – – ● ● ● F
Working port (port plate)
15
Port thread: Metric with prole sealing ring seal based on DIN 3852
Fastening thread at the SAE working port and through drive: Metric according to DIN 13
28 40 56 71 90 125
SAEworkingportAandB,topandbottom suctionportSbottom
– ● ● ● ● ● 02
SAEworkingportAandB,topandbottom suctionportSattop
– ● ● ○ ○ ○ 03
SAEworkingportAandB,samesideright
6)
suctionportSbottom
● – – – – –
10
SAEworkingportAandB,samesideleft
6)
suctionportSbottom
– – – ● ○ ●
SAEworkingportAandB,samesideright
6)
suctionportSattop
– – – ○ ○ ○
13
SAEworkingportAandB,samesideleft
6)
suctionportSattop
● – ● – – –
Port thread: Metric with O-ring seal based on ISO6149
Fastening thread at the SAE working port and through drive: Metric according to DIN 13
28 40 56 71 90 125
SAEworkingportAandB,topandbottom suctionportSbottom
– ● – – – ● 22
SAEworkingportAandB,samesideright
6)
suctionportSbottom
● – – – – – 30
●
= Available
○
= Onrequest – = Notavailable = Preferredprogram
4) Standardforcombinationpump–1stpump:ShaftZ
5) Standardforcombinationpump–1stpump:ShaftS
6) Onlypossiblewithoutattachmentlter
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22
A4V G / 32 ‒ N
BoschRexrothAG,RE-E92003/2023-10-30
4 A4VG series 32 |Axialpistonvariablepump
Typecode
Boost pump 28 40 56 71 90 125
16 Withoutintegratedboostpump withoutthroughdrive
● ● ● ● ● ● N
withthroughdrive
● ● ● ● ● ● K
Integratedboostpump withandwithoutthroughdrive
● ● ● ● ● ● F
Through drive
7)
28 40 56 71 90 125
17 Withoutthroughdrive,onlyforversionNandF(position16)
● ● ● ● ● ● 00
FlangeSAEJ744 Hubforsplinedshaft
82-2(A) 5/8in 9T16/32DP
8)
● ● ● ● ● ● 01
3/4in 11T16/32DP
8)
– ● ● ● – – 52
101-2(B) 7/8in 13T16/32DP
8)
● ● ● ● ● ● 02
1in 15T16/32DP
8)
● ● ● ● ● ● 04
127-2(C) 1in 15T16/32DP
8)
– ● – – – – 09
127-2(C) 11/4in 14T12/24DP
8)
– – ● ● – –
07
127-2/4(C)
– – – – ● ●
152-2/4(D) W35 2×30×16×9g
9)
– – – – ● – 73
13/4in 13T8/16DP
8)
– – – – – ● 69
High-pressure relief valve Settingrange∆p
HD
28 40 56 71 90 125
18 High-pressurereliefvalve,pilotoperated 100…420bar withbypass
– – – ● ● ● 1
High-pressurereliefvalve
direct
operated,xedsetting
250…420bar withoutbypass
● ● ● – – – 3
withbypass
● ● ● – – – 5
100…250bar withoutbypass
● ● ● – – – 4
withbypass
● ● ● – – – 6
Filtration boost circuit/external boost pressure supply 28 40 56 71 90 125
19 Filtrationintheboostpumpsuctionline
● ● ● ● ● ● S
Filtrationintheboostpumppressureline
Portsforexternalboostcircuitltration(F
e
andF
a
)
● ● ● ● ● ● D
Attachmentlterwithcoldstartvalve
– ● ● ● ● ● F
Attachmentlterwithcoldstartvalveandvisualcontaminationindicator
– ● ● ● ● ● P
Attachmentlterwithcoldstartvalveandelectriccontaminationindicator,
function
normallyopen
– ● ● ● ● ● B
Externalboostpressuresupply(versionwithoutintegratedboostpump–N00,K...)
● ● ● ● ● ● E
Swivel angle sensor 28 40 56 71 90 125
20 Withoutswivelanglesensor(withoutcode)
● ● ● ● ● ●
Electricswivelanglesensormounted
10)
○ ○ ○ ○ ○ ○ R
7) Specicationsforversionwithintegratedboostpump,please
contactusforversionwithoutboostpump
8) HubforsplinedshaftaccordingtoANSIB92.1a
(Splined
shaftinaccordancewithSAEJ744)
9) HubforsplinedshaftaccordingtoDIN5480
10)Theswivelanglesensorisusedtodetecttheswivelangleand
thusthedisplacement.Foravailableoptionsregardingtheswivel
angledetection,pleasecontactus.
●
= Available
○
= Onrequest – = Notavailable = Preferredprogram
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22
A4V G / 32 ‒ N
RE-E92003/2023-10-30,BoschRexrothAG
5 Axialpistonvariablepump | A4VG series 32
Typecode
Connector for solenoids
11)
28 40 56 71 90 125
21 Withoutconnector(withoutcode),onlywithpurelyhydrauliccontrols
● ● ● ● ● ●
DEUTSCHconnector
molded,
2-pin
withoutsuppressordiode
● ● ● ● ● ● P
withsuppressordiode(onlyforEZandDA)
● ● ● ● ● ● Q
Standard/special version
22 Standardversion withoutcode
Specialversion
-S
●
= Available
○
= Onrequest – = Notavailable = Preferredprogram
Notice
▶ Notetheprojectplanningnotesonpage92!
▶ Inadditiontothetypecode,pleasespecifythe
relevanttechnicaldatawhenplacingyourorder.
▶ Pleasenotethatnotalltypecodecombinationsare
availablealthoughtheindividualfunctionsaremarked
asbeingavailable.
11)Connectorspecicationsreferstocontroldevice,connectorsfor
otherelectriccomponentsmaydeviate
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22
A4V G / 32 ‒ N
BoschRexrothAG,RE-E92003/2023-10-30
6 A4VG series 32 |Axialpistonvariablepump
Hydraulicuids
Hydraulic uids
Theaxialpistonunitisdesignedforoperationwith
HLPmineraloilaccordingtoDIN51524.
Applicationinstructionsandrequirementsforhydraulic
uidselection,behaviorduringoperationaswellas
disposalandenvironmentalprotectionshouldbetaken
fromthefollowingdatasheetsbeforethestartofproject
planning:
▶ 90220:Hydraulicuidsbasedonmineraloilsand
relatedhydrocarbons
▶ 90221:Environmentallyacceptablehydraulicuids
▶ 90222:Fire-resistant,water-freehydraulicuids
(HFDR/HFDU)
▶ 90225:Limitedtechnicaldataforoperationwith
water-freeandwater-containingre-resistanthydraulic
uids(HFDR,HFDU,HFAE,HFAS,HFB,HFC).
Selection of hydraulic uid
BoschRexrothevaluateshydraulicuidsonthebasisof
theFluidRatingaccordingtothetechnical
datasheet90235.
HydraulicuidswithpositiveevaluationintheFluid
Ratingareprovidedinthefollowingtechnicaldatasheet:
▶ 90245:BoschRexrothFluidRatingListforRexroth
hydrauliccomponents(pumpsandmotors)
Selectionofhydraulicuidshallmakesurethatthe
operatingviscosityintheoperatingtemperaturerangeis
withintheoptimumrange(ν
opt
;seeselectiondiagram).
Viscosity and temperature of hydraulic uids
Viscosity Shaft seal Temperature
3)
Remarks
Coldstart ν
max
≤1600mm²/s NBR
2)
ϑ
St
≥−40°C t≤3min,withoutload(p≤50bar),n≤1000rpm
Permissibletemperaturedifferencebetweenaxialpistonunit
andhydraulicuidinthesystemmaximum25K
FKM ϑ
St
≥−25°C
Warm-upphase ν=1600…400mm²/s t≤15min,p≤0.7×p
nom
andn≤0.5×n
nom
Permissible
operatingrange
ν=400…10mm²/s
1)
NBR
2)
ϑ≤+85°C MeasuredatportT
FKM ϑ≤+110°C
ν
opt
=36…16mm²/s Optimaloperatingviscosityandefciencyrange
Short-term
operation
ν
min
=10…7mm²/s NBR
2)
ϑ≤+85°C t≤3min,p≤0.3×p
nom
,measuredatportT
FKM ϑ≤+110°C
Notice
Themaximumcircuittemperatureof+115°Cmustnot
beexceededattheworkingportsAandBcomplying
withthepermissibleviscosity.
1) Thiscorresponds,forexampleontheVG46,toatemperature
rangeof+4°Cto+85°C(seeselectiondiagram)
2) Specialversion,pleasecontactus
3) Ifthetemperatureatextremeoperatingparameterscannotbe
adheredto,pleasecontactus.
RE-E92003/2023-10-30,BoschRexrothAG
7 Axialpistonvariablepump | A4VG series 32
Hydraulicuids
▼ Selection diagram
−40 −25 −10 10 30 40 50 90 11570
0
7
10
40
60
20
100
200
400
600
1000
1600
VG 22
VG 32
VG 46
VG 68
VG 100
16
36
Viscosityν[mm
2
/s]
Maximumpermissibleviscosityoncoldstart
Warm-upphase
Permissibleoperatingrange
ν
opt
Minimumpermissibleviscosityforshort-termoperation
Temperature
ϑ[°C]
Filtration of the hydraulic uid
Finerltrationimprovesthecleanlinesslevelofthe
hydraulicuid,whichincreasestheservicelifeoftheaxial
pistonunit.
Acleanlinesslevelofatleast20/18/15istobemaintained
accordingtoISO4406.
Atahydraulicuidviscosityoflessthan10mm²/s
(e.g.duetohightemperaturesduringshort-term
operation),acleanlinesslevelofatleast19/17/14
accordingtoISO4406isrequired.
Forexample,aviscosityof10mm²/scorrespondstothe
followingtemperatureswiththefollowingmedia:
▶ HLP32atemperatureof73°C
▶ HLP46atemperatureof85°C
BoschRexrothAG,RE-E92003/2023-10-30
8 A4VG series 32 |Axialpistonvariablepump
Workingpressurerange
Working pressure range
Pressure at working portAor B Denition
Nominalpressurep
nom
400bar Thenominalpressurecorrespondstothemaximumdesignpressure.
Maximumpressurep
max
450bar Themaximumpressurecorrespondstothemaximumworkingpressurewithin
asingleoperatingperiod.Thesumofsingleoperatingperiodsmustnotex-
ceed
thetotaloperatingperiod.
Maximumsingleoperatingperiod 10s
Totaloperatingperiod 300h
Minimumpressure(low-pressureside) 10barabove
casepressure
Minimumpressureonthelow-pressureside(AorB)requiredtoprevent
damagetotheaxialpistonunit.
Boostpressuresettingmustbehigherdependingonsystem.
RateofpressurechangeR
Amax
9000bar/s Maximumpermissiblespeedofpressurebuild-upandreductionduring
apressurechangeacrosstheentirepressurerange.
Boost pump
Nominalpressurep
Sp
nom
25bar
Maximumpressurep
Sp
max
40bar
PressureatsuctionportS(inlet)
Continuousp
Smin
≥0.8barabsolute ν≤30mm
2
/s
Short-term,atacoldstart ≥0.5barabsolute t<3min
Maximumpressurep
Smax
≤5barabsolute
Control pressure
Minimumcontrolpressurep
Stmin
atn=2000rpm
Requiredcontrolpressurep
St
,toensurethefunctionofthecontrol.
Therequiredcontrolpressureisdependentonrotationalspeed,working
pressureandthespringassemblyofthestrokingpiston.
ControlsEP,HD,HW 20barabove
casepressure
ControlsDA,DG,EZ,ET 25barabove
casepressure
Case pressure at port T
Continuousdifferentialpressure∆p
T
cont
2bar Maximum,averageddifferentialpressureattheshaftseal(casetoambient
pressure)
Maximumdifferentialpressure∆p
T
max
seediagramon
page9
Permissibledifferentialpressureattheshaftseal(casetoambientpressure)
Pressurepeaksp
T
peak
10bar t<0.1s,maximum1000pressurepeakspermissible
RE-E92003/2023-10-30,BoschRexrothAG
9 Axialpistonvariablepump | A4VG series 32
Workingpressurerange
▼ Maximum pressure p
max
up to 450bar and total operating
period
100
0
100
200
300
400
450
300 h
Pressurep [bar]
Swivelangleа[%]
Totaloperating
period
Maximumpressure
Nominalpressure
▼ Rate of pressure change R
Amax
p
nom
∆t
∆p
Timet
Pressurep
Totaloperatingperiod=t
1
+ t
2
+ ... + t
n
▼ Maximum differential pressure at the shaft seal
0
1
2
3
4
5
1000 2000 3000 4000 5000
NG90
NG71
NG56
NG40
NG28
NG125
DifferentialpressureΔp[bar]
Rotationalspeedn[rpm]
▼ Pressure denition
Pressurep
t
1
t
2
t
n
Singleoperatingperiod
Minimumpressure
Maximumpressurep
max
Nominalpressurep
nom
Timet
Notice
▶ Workingpressurerangeapplieswhenusinghydraulic
uidsbasedonmineraloils.Pleasecontactusfor
valuesforotherhydraulicuids.
▶ Inadditiontothehydraulicuidandthetemperature,
theservicelifeoftheshaftsealisinuencedbythe
rotationalspeedoftheaxialpistonunitandthecase
pressure.
▶ Theservicelifeoftheshaftsealdecreaseswith
increasingfrequencyofpressurepeaksandincreasing
meandifferentialpressure.
▶ Thecasepressuremustbegreaterthantheexternal
pressure(ambientpressure)attheshaftseal.
BoschRexrothAG,RE-E92003/2023-10-30
10 A4VG series 32 |Axialpistonvariablepump
Technicaldata
Technical data
Size NG 28 40 56 71 90 125
Geometricdisplacement,perrevolution
variablepump V
gmax
cm
3
28 40 56 71 90 125
boostpump(atp=20bar) V
gSp
cm
3
6.1 8.6 11.6 19.6 19.6 28.3
Rotationalspeed
1)
maximumatV
gmax
andΔp=0bar n
nom
rpm 4250 4000 3600 3300 3050 2850
limitedmaximum
2)
n
max1
rpm 4500 4200 3900 3600 3300 3250
intermittentmaximum
3)
n
max2
rpm 5000 5000 4500 4100 3800 3450
minimum n
min
rpm 500 500 500 500 500 500
Flow atn
nom
andV
gmax
q
v
l/min 119 160 202 234 275 356
Power
4)
atn
nom
,V
gmax
andΔp=400bar
P
kW 79 107 134 156 183 238
Torque
4)
withV
gmax
and Δp=400bar
M
Nm 178 255 357 452 573 796
Δp=100bar
M
Nm 45 64 89 113 143 199
Rotarystiffnessofdriveshaft S
c
kNm/rad 31.4 69 80.8 98.8 158.1 218.3
T
c
kNm/rad – – 95 120.9 – 252.1
A
c
kNm/rad – 79.6 95.8 142.4 176.8 256.5
Z
c
kNm/rad 32.8 67.5 78.8 122.8 137 223.7
U
c
kNm/rad – 50.8 – – 107.6 –
Momentofinertiaoftherotarygroup J
TW
kgm
2
0.0022 0.0038 0.0066 0.0097 0.0149 0.0232
Maximumangularacceleration
5)
α
rad/s² 38000 30000 24000 21000 18000 14000
Casevolume
V
l 0.9 1.1 1.5 1.3 1.5 2.1
Weight(withoutthroughdrive)approx.
6)
m
kg 29 31 38 50 60 80
Notice
▶ Theoreticalvalues,withoutefciencyandtolerances;
valuesrounded
▶ Operationabovethemaximumvaluesorbelow
theminimumvaluesmayresultinalossoffunction,
areducedservicelifeorinthedestructionoftheaxial
pistonunit.BoschRexrothrecommendstestingthe
loadsbymeansofexperimentorcalculation/
simulationandcomparisonwiththepermissible
values.
Determination of the operating characteristics
Flow q
v
=
V
g
× n × η
v
[l/min]
1000
Torque
M
=
V
g
× Δp
[Nm]
20×π × η
hm
Power
P
=
2π × M × n
=
q
v
×Δp
[kW]
60000 600×η
t
Key
V
g
Displacementperrevolution[cm
3
]
Δp
Differentialpressure[bar]
n
Rotationalspeed[rpm]
η
v
Volumetricefciency
η
hm
Hydraulic-mechanicalefciency
η
t
Totalefciency(η
t
= η
v
×η
hm
)
1) Thevaluesareapplicable:
– fortheoptimumviscosityrangefromν
opt
=36to16mm²/s
– forhydraulicuidbasedonmineraloils(forHFhydraulic
uids,observethetechnicaldatain90225)
2) Validathalfcornerpower(e.g.atV
gmax
andp
nom
/2)
3) Validat ∆p=70to150baror∆p<300barandt<0.1s
4) Withoutboostpump
5) Thedataarevalidforvaluesbetweentheminimumrequiredand
maximumpermissiblerotationalspeed.
Valid
forexternalexcitation(e.g.dieselengine2to8timesrotary
frequency;cardanshafttwicetherotaryfrequency).
The
limitvalueisonlyvalidforasinglepump.
The
loadcapacityoftheconnectionpartsmustbeconsidered.
6) Weightmayvarybyequipment.
RE-E92003/2023-10-30,BoschRexrothAG
11 Axialpistonvariablepump | A4VG series 32
Technicaldata
Permissible radial and axial loading of the drive shaft
▼ Splined shaft DIN5480
Size NG 28 40 40 56 56 71 71
Driveshaft W25 W30 W35 W30 W35 W35 W40
Maximumradialforce
at
distancea
(to
theshaftcollar)
F
q
a
F
qmax
N 3030 3608 3092 5051 4329 5489 4803
a mm 17.5 17.5 20 17.5 20 20 22.5
Maximumaxialforce
F
ax
+
–
+F
axmax
N 1557 2120 2120 2910 2910 4242 4242
−F
axmax
N 417 880 880 1490 1490 2758 2758
Size NG 90 90 125 125
Driveshaft W35 W45 W40 W45
Maximumradialforce
at
distancea
(to
theshaftcollar)
F
q
a
F
qmax
N 6957 5411 8455 7516
a mm 20 25 22.5 25
Maximumaxialforce
F
ax
+
–
+F
axmax
N 4330 4330 6053 6053
−F
axmax
N 2670 2670 3547 3547
▼ Splined shaft ANSIB92.1a
Size NG 28 40 40 56 56 71 71
Driveshaft in 1 1 11/4 11/4 13/8 11/4 13/8
Maximumradialforce
at
distancea
(to
theshaftcollar)
F
q
a
F
qmax
N 2983 4261 3409 4772 4338 6050 5500
a mm 19 19 24 24 24 24 24
Maximumaxialforce
F
ax
+
–
+F
axmax
N 1557 2120 2120 2910 2910 4242 4242
−F
axmax
N 417 880 880 1490 1490 2758 2758
Size NG 90 90 125 125
Driveshaft in 11/4 13/4 13/4 2
Maximumradialforce
at
distancea
(to
theshaftcollar)
F
q
a
F
qmax
N 7670 5478 7609 6658
a mm 24 33.5 33.5 40
Maximumaxialforce
F
ax
+
–
+F
axmax
N 4330 4330 6053 6053
−F
axmax
N 2670 2670 3547 3547
Notice
▶ Theaxialandradialloadinggenerallyinuencethe
bearingservicelife.
▶ Specialrequirementsapplyinthecaseofbeltdrive
andcardanshaft.Pleasecontactus.
BoschRexrothAG,RE-E92003/2023-10-30
12 A4VG series 32 |Axialpistonvariablepump
Technicaldata
Permissible input and through-drive torques
Size NG 28 40 56 71 90 125
TorqueatV
gmax
andΔp=400bar
1)
M
Nm 178 255 357 452 573 796
Max.inputtorqueondriveshaft
2)
DIN5480 Z M
Emax
Nm 352 522 522 912 912 1460
W25 W30 W30 W35 W35 W40
A M
Emax
Nm – 912 912 1460 2190 2190
W35 W35 W40 W45 W45
ANSIB92.1a(SAEJ744) S M
Emax
Nm 314 602 602 602 1640 1640
in 1 11/4 11/4 11/4 13/4 13/4
T M
Emax
Nm – – 970 970 – 2670
in – – 13/8 13/8 – 2
U
3)
M
Emax
Nm – 314 – – 602 –
in – 1 – – 11/4 –
Maximumthrough-drivetorque
4)
M
Dmax
Nm 231 314 521 660 822 1110
▼ Distribution of torques
M
E
M
D
M
1
M
2
M
3
1stpump
2ndpump
Torqueat1stpump
M
1
Torqueat2ndpump
M
2
Torqueat3rdPump
M
3
Inputtorque
M
E
= M
1
+M
2
+M
3
M
E
<
M
E max
Through-drivetorque
M
D
= M
2
+M
3
M
D
<
M
D max
1) Efciencynotconsidered
2) Fordriveshaftsfreeofradialforce
3) Shaft"U"isonlypermissibleasadriveshaftforthe2ndpumpin
acombinationpumpofthesamesize.
4) NotemaximuminputtorqueforshaftS!
RE-E92003/2023-10-30,BoschRexrothAG
13 Axialpistonvariablepump | A4VG series 32
HD–Proportionalcontrol,hydraulic,pilot-pressurerelated
HD – Proportional control, hydraulic, pilot-pressure related
Theoutputowofthepumpisinnitelyvariable
between0and100%,proportionaltothedifferencein
pilotpressureappliedtothetwopilotsignalports
(Y
1
andY
2
).Theowisreversible,dependingonpilot
pressuresideY
1
andY
2
.Thepilotpressureorthepilot
pressuredifferenceactsasasetpointforceonthecontrol
spool.Itthendirectscontroloilintoandoutofthe
strokingcylindertoadjustpumpdisplacementaccording
tothesetpointvalue.Themechanicalfeedbacklever
connectedtothestrokingpistonclosesthecontrolcircuit
viaaforcecomparisonwiththehydraulicsetpointforce.In
thiscase,thepumpswivelangleisadjustedproportionally
tothecurrentdifferenceinpilotpressure.
IfthepumpisalsoequippedwithaDAcontrolvalve
(seepage17),automotiveoperationispossiblefor
traveldrives.
0 0.2 0.4 0.6 0.8 1.00.20.40.60.81.0
18
16
14
12
10
8
6
4
2
0
2
4
6
8
10
12
14
16
18
V
g
V
g max
V
g
V
g max
p
St
[bar]
p
St
[bar]
Size 28 … 125
Startofcontrol(V
g0
) p
St
bar 6
Endofcontrol(V
gmax
) p
St
bar 18
Maximumrequiredpilotoilvolume q
vSt
bar 0.5
Key
V
g
Displacement
V
g0
Displacementinneutralposition
V
gmax
Maximumdisplacement
p
St
PilotpressuresignalatportY
1
,Y
2
q
vSt
MaximumrequiredpilotoilvolumeatportY
1
,Y
2
Notice
Forexactneutralposition,thepilotpressuresY
1
andY
2
mustbecompletelyunloadedviatheexternalcontrol
valveorthecontrolpressuredifferenceY
1
-Y
2
mustbe
compensated.
▼ Circuit diagram, standard version
1)
R F
a
F
a1
F
e
F
S
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
Y
1
Y
2
2) 2)
▼ Circuit diagram, version with DA control valve
1)
R F
a
F
a1
F
e
F
S
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
Y
1
Y
2
2) 2)
1) Size28withoutportF
a1
andF
S
2)
Onlysizes28to71aredesignedwithinletltrationinX
1
/X
2
BoschRexrothAG,RE-E92003/2023-10-30
14 A4VG series 32 |Axialpistonvariablepump
HD–Proportionalcontrol,hydraulic,pilot-pressurerelated
Correlation of direction of rotation, control and ow direction
Directionofrotation Clockwise Counter-clockwise
Size 28…56 71…125 28…56 71…125
Pilotsignal Y
1
Y
2
Y
1
Y
2
Y
1
Y
2
Y
1
Y
2
Controlpressure X
1
X
2
X
1
X
2
X
1
X
2
X
1
X
2
Portplate
02
and10
Flowdirection AtoB BtoA BtoA AtoB BtoA AtoB AtoB BtoA
Workingpressure M
B
M
A
M
A
M
B
M
A
M
B
M
B
M
A
Portplate
03
and13
Flowdirection BtoA AtoB AtoB BtoA AtoB BtoA BtoA AtoB
Workingpressure M
A
M
B
M
B
M
A
M
B
M
A
M
A
M
B
▼ Position of ports (example)
Portplate02
(Size40to125)
Z
X
1
B
A
M
A
X
1
B
Y
1
B
A
M
A
M
B
Y
1
Portplate10
(Size28)
ViewZ
Clockwise
Counter-
clockwise
Clockwise
Counter-
clockwise
RE-E92003/2023-10-30,BoschRexrothAG
15 Axialpistonvariablepump | A4VG series 32
HW–Proportionalcontrol,hydraulic,mechanicalservo
HW – Proportional control, hydraulic, mechanical servo
Theoutputowofthepumpisinnitelyvariablebetween
0and100%,proportionaltotheswivelangleofthecon-
trollever.
Afeedbackleverconnectedtothestrokingpistonmain-
tainsthepumpowforanygivenpositionofthecontrol
lever.
IfthepumpisalsoequippedwithaDAcontrolvalve
(seepage17),automotiveoperationispossiblefor
traveldrives.
β [°]
V
g
V
g max
β [°]
V
g
V
g max
0 0.2 0.4 0.6 0.8 1.00.20.40.60.81.0
40
35
30
25
20
15
10
5
0
5
10
15
20
25
30
35
40
NG28,40,56,71
NG90,125
Size 28 … 71 90 … 125
Startofcontrol(V
g0
)
β
±3° ±3°
Endofcontrol(V
gmax
)
β
±32° ±34.5°
Rotationallimitercontrollever
(internal)
β
±38° ±38°
Themaximumrequiredtorqueatthecontrolleveris
170Ncm.TopreventdamagetotheHWcontrolmodule,
apositivemechanicalstopof36.5°±1mustbeprovided
fortheHWcontrolleveronthecustomerside.
Key
V
g
Displacement
V
g0
Displacementinneutralposition
V
gmax
Maximumdisplacement
β
Swivelangleatthecontrollever
Notice
▶ Spring-centeringenablesthepump,dependingon
pressureandrotationalspeed,tomoveautomatically
totheneutralposition(V
g
=0)assoonasthereisno
longeranytorqueonthecontrolleveroftheHW
controlmodule.
▶ Asstandarddelivery,thecontrolleverisoriented
towardthethroughdrive(seedimensions).
▶ Ifnecessary,thepositionofthelevercanbechanged.
Theprocedureisdenedintheinstructionmanual.
▶ Ondelivery,thepositionofthecontrollevercan
deviatefromtheinstallationdrawing.
Option: Neutral position switch
Theswitchcontactintheneutralpositionswitchisclosed
whenthecontrolleverontheHWcontrolmoduleisinits
neutralposition.Theswitchopenswhenthecontrollever
ismovedoutofthecentralpositionineitherdirection.
Thus,theneutralpositionswitchprovidesamonitoring
functionfordriveunitsthatrequirethecontrolleveratthe
HWcontrolmoduletobeintheneutralpositionduring
certainoperatingconditions(e.g.startingdieselengine).
Technical data
Loadcapacity 20A(continuous),withoutswitchingop-
erations
Sw
itchingcapacity 15A/32V(resistiveload)
4A/32V(inductiveload)
Connectorversion DEUTSCHDT04-2P-EP04
(mating
connector,seepage86)
▼ Circuit diagram, standard version
1)
R F
a
F
e
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
1) Size28withoutportF
a1
andF
S
BoschRexrothAG,RE-E92003/2023-10-30
16 A4VG series 32 |Axialpistonvariablepump
HW–Proportionalcontrol,hydraulic,mechanicalservo
▼ Circuit diagram, version with DA control valve and neutral position switch
1)
R F
a
F
e
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
Correlation of direction of rotation, control and ow direction
Directionofrotation Clockwise Counter-clockwise
Size 28…56 71…125 28…56 71…125
Leverdirection
2)
ccw cw ccw cw ccw cw ccw cw
Controlpressure X
2
X
1
X
2
X
1
X
2
X
1
X
2
X
1
Portplate
02
and10
Flowdirection BtoA AtoB AtoB BtoA AtoB BtoA BtoA AtoB
Workingpressure M
A
M
B
M
B
M
A
M
B
M
A
M
A
M
B
Portplate
03
and13
Flowdirection AtoB BtoA BtoA AtoB BtoA AtoB AtoB BtoA
Workingpressure M
B
M
A
M
A
M
B
M
A
M
B
M
B
M
A
▼ Position of ports (example)
M
A
M
B
Z
X
2
X
1
B
A
X
2
X
1
B
A
M
A
M
B
cw
ccw
cw
ccw
Portplate10
(Size28)
Portplate02
(Size40to125)
ViewZ
Clockwise
Counter-
clockwise
Ne
utralpositionswitch
Neutralpositionswitch
Clockwise
Counter-
clockwise
1) Size28withoutportF
a1
andF
S
2)
ccw=counter-clockwise,
cw
=clockwise
RE-E92003/2023-10-30,BoschRexrothAG
17 Axialpistonvariablepump | A4VG series 32
DA–Automaticcontrol,speedrelated
DA– Automatic control, speed related
TheDAclosedloopcontrolisanenginespeed-dependent
systemfortraveldrives.Thebuilt-inDAcontrolvalve
generatesapilotpressurethatisproportionaltopump
drivespeed(ofthemotor).Thispilotpressureisdirected
tothestrokingcylinderofthepumpbyan
electromagneticallyactuated4/3-waydirectionalvalve.
Thepumpdisplacementisinnitelyvariableineachow
directionandisinuencedbybothpumpdrivespeedand
systempressure.Theowdirection(i.e.machinemoving
forwardorbackward)isdeterminedbyeithersolenoid
aorbbeingactivated.
Increasingthepumpdrivespeedgeneratesahigherpilot
pressurefromtheDAcontrolvalve,withasubsequent
increaseinpumpow.
Dependingontheselectedoperatingcharacteristicsofthe
pump,increasingthesystempressure(i.e.machineload)
causesthepumptoswivelbacktowardsasmaller
displacement.Anoverloadprotectionfortheengine
(againststalling)isachievedbycombiningthis
pressure-dependentreductioninpumpstrokewitha
reductioninpilotpressureastheenginespeeddrops.
Anyadditionalpowerrequirement,e.g.forhydraulic
functionsfromattachments,couldcausetheengine
rotationalspeedtodropfurther.Thiswillcauseafurther
reductioninpilotpressureandthusofthepump
displacement.Automaticpowerdistributionandfull
exploitationoftheavailablepowerareachievedinthis
way,bothforthetraveldriveandfortheimplement
hydraulics,withprioritygiventotheimplementhydraulics.
VariousoverrideoptionsareavailableforDAcontrol
functiontoallowcontrolledoperationoftheimplement
hydraulicswithhighrotationalspeedsatreducedtravel
speed.
TheDAcontrolvalvecanalsobeusedinpumpswithEP,
DG,HWandHDcontrolmodulestoprotectthe
combustionengineagainstoverload.
Notice
DAclosedloopcontrolisonlysuitableforcertaintypes
oftraveldrivesystemsandrequiresreviewofthemotor
andvehicleparameterstoensurethatthepumpisused
correctlyandthatmachineoperationissafeand
efcient.WerecommendthatallDAapplicationsbe
reviewedbyaBoschRexrothapplicationengineer.
Technical data, switching solenoid DA1 DA2
Voltage 12V(±20%) 24V(±20%)
NeutralpositionV
g
=0 de-energized de-energized
PositionV
g
max
current
switchedon
current
switchedon
Nominalresistance(at20°C) 5.5Ω 21.7Ω
Nominalpower 26.2W 26.5W
Minimumrequiredactivecurrent 1.32A 0.67A
Dutycycle 100% 100%
Typeofprotection:seeconnectorversionpage86
▼ Position of ports (example)
Portplate10
(Size28)
Portplate02
(Size40to125)
M
A
M
B
Z
X
2
X
1
B
A
M
A
M
B
X
2
X
1
B
B
A
Switchingsolenoidb
Switchingsolenoidb
ViewZ
Clockwise
Counter-
clockwise
Clockwise
Counter-
clockwise
Switchingsolenoida
Switchingsolenoida
Correlation of direction of rotation, control and ow direction
Directionofrotation Clockwise Counter-clockwise
Size 28…56 71…125 28…56 71…125
Actuationofswitchingsolenoid a b a b a b a b
Controlpressure X
2
X
1
X
2
X
1
X
2
X
1
X
2
X
1
Portplate
02
and10
Flowdirection BtoA AtoB AtoB BtoA AtoB BtoA BtoA AtoB
Workingpressure M
A
M
B
M
B
M
A
M
B
M
A
M
A
M
B
Portplate
03
and13
Flowdirection AtoB BtoA BtoA AtoB BtoA AtoB AtoB BtoA
Workingpressure M
B
M
A
M
A
M
B
M
A
M
B
M
B
M
A
BoschRexrothAG,RE-E92003/2023-10-30
18 A4VG series 32 |Axialpistonvariablepump
DA–Automaticcontrol,speedrelated
DA..2 − DA control valve, xed setting
Pilotpressureisgeneratedinrelationtodrivespeed.
▼ Circuit diagram DA control valve, xed setting, DA1D2/
DA2D2
1)
R F
a
F
e
M
B
B
P
S
ab
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
DA..3 − DA control valve, mechanically adjustable with
position lever
Pilotpressureisgeneratedinrelationtodrivespeed.
Anyreductionofpilotpressurepossible,independentlyof
drivespeed,throughmechanicalactuationoftheposition
lever(inchfunction).
Themaximumpermissibleactuationtorqueattheposition
leverisM
max
=4Nm.
Inthestandardversion,thepositionleverisoriented
towardsthecontrolmodule,seedimension.
Themaximumangleofrotationis70°.
DA..3R
Directionofactuationofthepositionlever:clockwise
DA..3L
Directionofactuationofthepositionlever:counter-
clockwise
▼ Circuit diagram DA1D3/DA2D3
1)
R F
a
F
e
M
B
B
P
S
ab
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
1) Size28withoutportF
a1
andF
S
RE-E92003/2023-10-30,BoschRexrothAG
19 Axialpistonvariablepump | A4VG series 32
DA–Automaticcontrol,speedrelated
DA..7 − DA control valve, xed setting, ports for pilot
control device as inch valve
Anyreductionofthepilotpressurepossible,independent
ofthedrivespeedisachievedbythemechanicalactuation
ofthepilotcontroldevice.
Thepilotcontroldeviceisinstalledseparatelyfromthe
pump(forexampleinthedriver’scabin)andconnectedto
thepumpbytwohydrauliccontrollinesviaportsP
S
and
Y.
Asuitablepilotcontroldevicemustbeorderedseparately
andisnotincludedinthescopeofdelivery.
Notice:Rotaryinchvalves,seepage87.
▼ Circuit diagram DA1D7/DA2D7
1)
R F
a
F
e
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
Y
ab
F
S
F
a1
Pilotcontroldevice
(not
includedinthescopeofdelivery)
DA..8−DA control valve, xed setting and hydraulic inch
valve mounted
OnlyforpumpswithDAcontrolmodule
▶ Versionwiththrottlevalvesize28,40,56,71
▶ Versionwithpressurereducingvalvesize90,125
Permitsreductionofthepilotpressure,independentlyof
thedrivespeed,hydraulicallycontrolled(portZ).
ThehydraulicinchvalveatportZiscontrolledwith
mineraloil-basedhydraulicuid.
MaximumpermissiblepilotpressureatportZ:80bar
▼ Circuit diagram DA1D8/DA2D8 with throttle valve
1)
R F
a
F
e
M
B
BP
S
ab
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
Z
F
S
F
a1
▼ Circuit diagram DA1D8/DA2D8 with pressure reducing valve
1)
R F
a
F
a1
F
e
F
S
M
B
BP
S
ab
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
Z
1) Size28withoutportF
a1
andF
S
BoschRexrothAG,RE-E92003/2023-10-30
20 A4VG series 32 |Axialpistonvariablepump
DG–Hydrauliccontrol,directoperated
DG – Hydraulic control, direct operated
Withthedirectoperatedhydrauliccontrol(DG),the
outputowofthepumpiscontrolledbyahydraulic
controlpressure,applieddirectlytothestrokingpiston
througheitherportX
1
orX
2
.
Flowdirectionisdeterminedbywhichcontrolpressure
portispressurized.
Pumpdisplacementisinnitelyvariableandproportional
totheappliedcontrolpressure,butisalsoinuencedby
systempressureandpumpdrivespeed.
Inordertousetheoptionalbuilt-inpressurecut-off,port
P
S
mustbeusedfortheselectedcontrolmoduleas
sourceofthecontrolpressureX
1
andX
2
generatedonthe
customerside.
Seepage77forafunctionaldescriptionofthepressure
cut-off.
Maximumpermissiblecontrolpressure:40bar
UseoftheDGcontrolrequiresareviewoftheengineand
vehicleparameterstoensurethatthepumpissetup
correctly.WerecommendthatallDGapplicationsbe
reviewedbyaBoschRexrothapplicationengineer.
IfthepumpisalsoequippedwithaDAcontrolvalve
(seepage17),automotiveoperationispossiblefor
traveldrives.
Correlation of direction of rotation, control and ow direction
Directionofrotation Clockwise Counter-clockwise
Size 28…56 71…125 28…56 71…125
Controlpressure X
1
X
2
X
1
X
2
X
1
X
2
X
1
X
2
Portplate
02
and10
Flowdirection AtoB BtoA BtoA AtoB BtoA AtoB AtoB BtoA
Workingpressure M
B
M
A
M
A
M
B
M
A
M
B
M
B
M
A
Portplate
03
and13
Flowdirection BtoA AtoB AtoB BtoA AtoB BtoA BtoA AtoB
Workingpressure M
A
M
B
M
B
M
A
M
B
M
A
M
A
M
B
▼ Circuit diagram, standard version
1)
R F
a
F
a1
F
e
F
S
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
▼ Circuit diagram, version with DA control valve
1)
R F
a
F
a1
F
e
F
S
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
1) Size28withoutportF
a1
andF
S
RE-E92003/2023-10-30,BoschRexrothAG
21 Axialpistonvariablepump | A4VG series 32
EP–Proportionalcontrol,electric
EP – Proportional control, electric
Theoutputowofthepumpisinnitelyvariableinthe
rangebetween0to100%,proportionaltotheelectrical
currentsuppliedtosolenoid.Theowisreversible,
dependingonsolenoidsideaorb.Themagneticforce
actsasasetpointvalueonthecontrolspool.Itthen
directscontroloilintoandoutofthestrokingcylinderto
adjustpumpdisplacementaccordingtothesetpointvalue.
Themechanicalfeedbackleverconnectedtothestroking
pistonclosesthecontrolcircuitviaaforcecomparison
withthemagneticforce.Inthiscase,thepumpswivel
angleisadjustedproportionallytothecontrolcurrent.
IfthepumpisalsoequippedwithaDAcontrolvalve(see
page17),automotiveoperationispossiblefortravel
drives.
I [mA]
EP3
EP4
I
[mA]
0.2 0.4 0.6 0.8 1.00.40.60.81.0
1200
1000
800
600
400
200
0
00.2
V
g
V
g max
V
g
V
g max
200
400
600
800
1000
1200
EP4
EP3
(Solenoida)
(Solenoidb)
Notice
Theproportionalsolenoidsdonothavemanualoverride.
Proportionalsolenoidswithmanualoverrideandspring
returnareavailableonrequest.
Technical data,
proportional solenoid
EP3 EP4
Voltage 12V(±20%) 24V(±20%)
Controlcurrent
StartofcontrolatV
g
=0 400mA 200mA
EndofcontrolatV
gmax
1200mA 600mA
Currentlimit 1.54A 0.77A
Nominalresistance(at20°C) 5.5Ω 22.7Ω
Dither
Frequency 100Hz 100Hz
Minimumoscillationrange
1)
240mA 120mA
Dutycycle 100% 100%
Typeofprotection:seeconnectorversionpage86
VariousBODAScontrollerswithapplicationsoftwareand
ampliersareavailableforcontrollingtheproportional
solenoids.
FurtherinformationcanalsobefoundontheInternetat
www.boschrexroth.com/mobile-electronics
▼ Circuit diagram, standard version
2)
R F
a
F
e
M
B
BP
S
a b
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
3)3)
▼ Circuit diagram, version with DA control valve
2)
R F
a
F
e
M
B
BP
S
a b
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
3) 3)
1) MinimumrequiredoscillationrangeofthecontrolcurrentΔI
p-p
(peaktopeak)withintherespectivecontrolrange(startof
controltoendofcontrol)
2) Size28withoutportF
a1
andF
S
3)
Onlysizes28to71aredesignedwithinletltrationinX
1
/X
2
BoschRexrothAG,RE-E92003/2023-10-30
22 A4VG series 32 |Axialpistonvariablepump
EP–Proportionalcontrol,electric
Correlation of direction of rotation, control and ow direction
Directionofrotation Clockwise Counter-clockwise
Size
1)
28…56 71…125 28…56 71…125
Actuationofproportionalsolenoid a b a b a b a b
Controlpressure X
1
X
2
X
1
X
2
X
1
X
2
X
1
X
2
Portplate
02
and10
Flowdirection AtoB BtoA BtoA AtoB BtoA AtoB AtoB BtoA
Workingpressure M
B
M
A
M
A
M
B
M
A
M
B
M
B
M
A
Portplate
03
and13
Flowdirection BtoA AtoB AtoB BtoA AtoB BtoA BtoA AtoB
Workingpressure M
A
M
B
M
B
M
A
M
B
M
A
M
A
M
B
▼ Position of ports (example)
M
A
M
B
Z
X
2
X
1
B
A
M
A
M
B
X
2
X
1
B
B
A
Portplate10
(Size28)
Portplate02
(Size40to125)
Proportionalsolenoidb
Proportionalsolenoidb
ViewZ
Clockwise
Counter-
clockwise
Clockwise
Counter-
clockwise
Proportionalsolenoida
Proportionalsolenoida
1) Availableportplatespersize,seetypecodeposition15
RE-E92003/2023-10-30,BoschRexrothAG
23 Axialpistonvariablepump | A4VG series 32
EZ–Two-pointcontrol,electric
EZ – Two-point control, electric
Byactuatingeitherswitchingsolenoidaorb,internal
controlpressureisapplieddirectlytothestrokingpiston
andthepumpswivelstomaximumdisplacement.
TheEZcontrolenablespumpowtobeswitchedbetween
V
g
=0andV
gmax
.
Flowdirectionisdeterminedbywhichsolenoidis
energized.
Technical data, switching
solenoid
EZ1 EZ2
Voltage 12V(±20%) 24V(±20%)
NeutralpositionV
g
=0 de-energized de-energized
PositionV
g
max
current
switchedon
current
switchedon
Nominalresistance(at20°C) 5.5Ω 21.7Ω
Nominalpower 26.2W 26.5W
Minimumrequiredactivecurrent 1.32A 0.67A
Dutycycle 100% 100%
Typeofprotection:seeconnectorversionpage86
▼ Circuit diagram, standard version
1)
R F
a
F
e
M
B
BP
S
ab
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
Correlation of direction of rotation, control and ow direction
Directionofrotation Clockwise Counter-clockwise
Size 28…56 71…125 28…56 71…125
Actuationofswitchingsolenoid a b a b a b a b
Controlpressure X
2
X
1
X
2
X
1
X
2
X
1
X
2
X
1
Portplate
02
and10
Flowdirection BtoA AtoB AtoB BtoA AtoB BtoA BtoA AtoB
Workingpressure M
A
M
B
M
B
M
A
M
B
M
A
M
A
M
B
Portplate
03
and13
Flowdirection AtoB BtoA BtoA AtoB BtoA AtoB AtoB BtoA
Workingpressure M
B
M
A
M
A
M
B
M
A
M
B
M
B
M
A
▼ Position of ports (example)
Portplate10
(Size28)
Portplate02
(Size40to125)
M
A
M
B
Z
X
2
X
1
B
A
M
A
M
B
X
2
X
1
B
B
A
Switchingsolenoidb
Switchingsolenoidb
ViewZ
Clockwise
Counter-
clockwise
Clockwise
Counter-
clockwise
Switchingsolenoida
Switchingsolenoida
1) Size28withoutportF
a1
andF
S
BoschRexrothAG,RE-E92003/2023-10-30
24 A4VG series 32 |Axialpistonvariablepump
ET–electroniccontrol,direct-operated
ET – electronic control, direct-operated
ETA/ETB – two pressure reducing valves, prepared for
BODAS Software
TheETA/ETBcontrolisoptimizedforelectronicdrivesand
isintendedtobeusedtogetherwiththeBODASsoftware.
Here,allrelevantcongurationoptionshavealreadybeen
predenedandensureanoptimalinteractionofpumpand
softwarethankstothestandardization.Thepumpfunction
islargelydeterminedbythesoftwareused.
Theoutputowofthepumpisinnitelyvariableinthe
rangebetween0and100%.Dependingontheprese-
lectedcurrentIatsolenoidsaandbofthepressure
reducingvalves,thestrokingcylinderofthepumpispro-
portionallysuppliedwithcontrolpressure.Thetwocon-
trolpressuresX
1
andX
2
canbecontrolledindependently.
Thepumpdisplacementthatarisesatacertaincontrol
currentisdependentontherotationalspeedandworking
pressureofthepump.Adifferentowdirectionisassoci-
atedwitheachpressurereducingvalve.
MaximumpermissiblecontrolpressureatportP
S
:40bar.
Technical data, pressure reducing
valve
ETA
1)
ETB
1)
ETA
2)
ETB
2)
NG28, 40 NG125
On-boardvoltageinthevehicle 12V 24V 12V 24V
PermissiblevoltageU 9.6…28.8V 9.6…28.8V
Currentlimit 1.8A 1.45A
Nominalresistance(at20°C) 2.4Ω 4.05Ω
Dither
Frequency 100Hz 100Hz
minimumoscillationrange
3)
360mA 250mA
Dutycycle 100% 100%
Typeofprotection:seeconnectorversionpage86
Notice
Allcontrol-relevantdataarealreadystoredinthe
software.
▼ Circuit diagram ETA/ETB, sizes 28 and 40
4)
R F
a
F
e
B
P
S
T
1
T
2
F
S
F
a1
X
1
X
2
G
S
A
p
U
p
U
ba
M
B
M
A
PressuresensorPR4
PressuresensorPR4
▼ Circuit diagram ETA/ETB, size 125
R F
a
F
e
B
P
S
T
1
T
2
F
S
F
a1
X
1
X
2
G
S
A
p
U
p
U
M
B
M
A
ba
PressuresensorPR4
PressuresensorPR4
1) Forfurtherinformationonthepressurereducingvalve,seedata
sheet58032.
Notice:
Theleakageowandthecontrolowdifferfromthe
parameterindatasheet58032.
2) Forfurtherinformationonthepressurereducingvalve,seedata
sheet64659.
Notice:
Theleakageowandthecontrolowdifferfromthe
parameterindatasheet64659.
3) MinimumrequiredoscillationrangeofthecontrolcurrentΔI
p-p
(peaktopeak)withintherespectivecontrolrange(startof
controltoendofcontrol)
4) Size28withoutportF
a1
andF
S
RE-E92003/2023-10-30,BoschRexrothAG
25 Axialpistonvariablepump | A4VG series 32
ET–electroniccontrol,direct-operated
Dimensions [mm]
Correlation of direction of rotation, control and ow direction
Directionofrotation Clockwise Counter-clockwise
Size 28…40 125 28…40 125
Actuationofpressurereducingvalve a b a b a b a b
Controlpressure X
1
X
2
X
1
X
2
X
1
X
2
X
1
X
2
Flowdirection AtoB BtoA BtoA AtoB BtoA AtoB AtoB BtoA
Workingpressure M
B
M
A
M
A
M
B
M
A
M
B
M
B
M
A
▼ Position of ports
Pressurereducingvalveb
Z
X
2
X
1
B
A
M
A
(PR4)
X
2
X
1
M
A
(PR4)
M
B
(PR4)
B
B
A
M
B
(PR4)
M
A
(PR4)
M
B
(PR4)
B
X
2
X
1
Clockwise
Counter-
clockwise
Portplate22
(Size125)
Pressurereducingvalvea
Pressurereducingvalveb
Pressurereducingvalveb
AnsichtZ
Clockwise
Counter-
clockwise
Clockwise
Counter-
clockwise
Portplate30
(Size28)
Portplate22
(Size40)
Pressurereducingvalvea
Pressurereducingvalvea
BoschRexrothAG,RE-E92003/2023-10-30
26 A4VG series 32 |Axialpistonvariablepump
ET–electroniccontrol,direct-operated
Dimensions [mm]
ET3/ET4 und ET7/ET8 – two pressure reducing valves
Theoutputowofthepumpisinnitelyvariableinthe
rangebetween0and100%.Dependingonthe
preselectedcurrentIatsolenoidsaandbofthepressure
reducingvalves,thestrokingcylinderofthepumpis
proportionallysuppliedwithcontrolpressure.Thetwo
controlpressuresX
1
andX
2
canbecontrolled
independently.Thepumpdisplacementthatarisesat
acertaincontrolcurrentisdependentontherotational
speedandworkingpressureofthepump.Adifferentow
directionisassociatedwitheachpressurereducingvalve.
MaximumpermissiblecontrolpressureatportP
S
:40bar.
Technical data, pressure reducing
valve
ET3
1)
ET4
1)
ET7
2)
ET8
2)
On-boardvoltageinthevehicle 12V 24V 12V 24V
PermissiblevoltageU 9.6…28.8V 9.6…28.8V
Currentlimit 1.8A 1.45A
Nominalresistance(at20°C) 2.4Ω 4.05Ω
Dither
Frequency 100Hz 100Hz
Minimumoscillationrange
3)
360mA 250mA
Dutycycle 100% 100%
Typeofprotection:seeconnectorversionpage86
▼ Circuit diagram ET3/4, standard version
4)
R F
a
F
e
B
P
S
T
1
T
2
F
S
F
a1
X
1
X
2
G
S
A
ba
M
B
M
A
M
H
▼ Circuit diagram ET7/8, standard version
M
H
R F
a
F
e
B
P
S
T
1
T
2
F
S
F
a1
X
1
X
2
G
S
A
M
B
M
A
ba
1) Forfurtherinformationonthepressurereducingvalve,seedata
sheet58032.
Notice:
Theleakageowandthecontrolowdifferfromthe
parameterindatasheet58032.
2) Forfurtherinformationonthepressurereducingvalve,seedata
sheet64659.
Notice:
Theleakageowandthecontrolowdifferfromthe
parameterindatasheet64659.
3) MinimumrequiredoscillationrangeofthecontrolcurrentΔI
p-p
(peaktopeak)withintherespectivecontrolrange(startof
controltoendofcontrol)
4) Size28withoutportF
a1
andF
S
RE-E92003/2023-10-30,BoschRexrothAG
27 Axialpistonvariablepump | A4VG series 32
ET–electroniccontrol,direct-operated
Dimensions [mm]
Correlation of direction of rotation, control and ow direction
Directionofrotation Clockwise Counter-clockwise
Size
1)
28…40 125 28…40 125
Actuationofpressurereducingvalve a b a b a b a b
Controlpressure X
1
X
2
X
1
X
2
X
1
X
2
X
1
X
2
Portplate
02
and10
Flowdirection AtoB BtoA BtoA AtoB BtoA AtoB AtoB BtoA
Workingpressure M
B
M
A
M
A
M
B
M
A
M
B
M
B
M
A
Portplate
03
and13
Flowdirection BtoA AtoB AtoB BtoA AtoB BtoA BtoA AtoB
Workingpressure M
A
M
B
M
B
M
A
M
B
M
A
M
A
M
B
▼ ET3/4 Position of ports (example)
Pressurereducingvalveb
Pressurereducingvalveb
B
A
Z
X
2
X
1
X
2
X
1
M
A
M
B
B
B
A
M
A
M
B
ViewZ
Clockwise
Counter-
clockwise
Clockwise
Counter-
clockwise
Portplate10
(Size28)
Portplate02
(Size40)
Pressurereducingvalvea
Pressurereducingvalvea
▼ ET7/8 Position of ports
Pressurereducingvalveb
M
A
M
B
BB
X
2
X
1
B
A
Clockwise
Counter-
clockwise
Portplate02
(Size125)
Pressurereducingvalvea
1) Dependingonthesize,different/notallportplatesareavailable,
seetypecodeposition15
BoschRexrothAG,RE-E92003/2023-10-30
28 A4VG series 32 |Axialpistonvariablepump
Dimensions,size28
Dimensions [mm]
Dimensions, size28
Version without control module
Standard:SAEworkingportAandB,samesideright,suctionportSbottom(10)
24
105
<5
ø101.6
-0.054
0
134
DetailW
Boost-pressurereliefvalve
HDvalve:
Without
bypass
With
bypass
Mechanicalneutralpositionadjustment
HDvalve:
With
bypass
Without
bypass
Pressurecut-off
FlangeSAEJ744
101-2
(B)
Portplate
Centerofgravity
max.
Notice
Option:SAEworkingportAandB,samesideleft,suc-
tionportStop(13):Portplate10rotatedthrough180°,
installationdrawingonrequest
RE-E92003/2023-10-30,BoschRexrothAG
29 Axialpistonvariablepump | A4VG series 32
Dimensions,size28
Dimensions [mm]
1) CenterboreaccordingtoDIN332(threadaccordingtoDIN13)
2) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,at
root,sidet,toleranceclass5
3) ThreadaccordingtoASMEB1.1
▼ Splined shaft DIN5480 ▼ Splined shaft ANSIB92.1a
Z ‒ W25×1.25×18×9g S ‒ 1 in 15T 16/32DP
2)
45
⌀35
29
⌀72
7.5
22
35
M10 × 1.5
1)
22
7.5
46
⌀72
30
3/8-16UNC-2B
3)
⌀35
38
BoschRexrothAG,RE-E92003/2023-10-30
30 A4VG series 32 |Axialpistonvariablepump
Dimensions,size28
Dimensions [mm]
4) Dependingontheapplication,momentarypressurepeaks
canoccur.Keepthisinmindwhenselectingmeasuringdevices
andttings.
5) OnlydimensionsaccordingtoSAEJ518,metricfasteningthread
isadeviationfromthestandard.
6) Pluggedforexternalboostpressuresupply.
7) Dependingoninstallationposition,T
1
orT
2
mustbeconnected
(seealsoinstallationinstructionsonpage89).
8) Thecountersinkmaybedeeperthanspeciedinthestandard.
Portsdesignedforstraightstudendsaccordingto
ENISO9974-2typeE
9) Optional,seepage79
10)Thecountersinkmaybedeeperthanspeciedinthestandard.
PortsdesignedforstraightstudendsaccordingtoENISO6149-2
11)O=Mustbeconnected(pluggedondelivery)
X
=Plugged(observeinstallationinstructions)
▼ Connection table for port plate10 and 13
Ports Standard Size p
max
[bar]
4)
State
11)
A, B Workingport
Fasteningthread
SAEJ518
5)
DIN13
3/4
in
M10×1.5;17deep
450 O
S Suctionport DIN3852
8)
M33×2;18deep 5 O
6)
T
1
Drainport DIN3852
8)
M22×1.5;14deep 3 O
7)
T
2
Drainport DIN3852
8)
M22×1.5;14deep 3 X
7)
R Airbleedport DIN3852
8)
M12×1.5;12deep 3 X
X
1
,X
2
Controlpressureport(upstreamoforice) DIN3852
8)
M12×1.5;12deep 40 X
X
1
,X
2
Controlpressureport(upstreamoforice,DGonly) DIN3852
8)
M12×1.5;12deep 40 O
X
3
,X
4
9)
Strokingchamberpressureport DIN3852
8)
M12×1.5;12deep 40 X
G Boostpressureportinlet DIN3852
8)
M12×1.5;12deep 40 X
P
S
Pilotpressureport DIN3852
8)
M14×1.5;12deep 40 X
P
S
Pilotpressureport(DA..7only) DIN3852
8)
M14×1.5;12deep 40 O
Y Pilotpressureportoutlet(onlyDA..7) DIN3852
8)
M14×1.5;12deep 40 O
M
A
,M
B
MeasuringportpressureA,B DIN3852
8)
M12×1.5;12deep 450 X
M
H
Measuringport,highpressure DIN3852
8))
M12×1.5;12deep 450 X
F
a
Boostpressureportinlet DIN3852
8)
M18×1.5;12deep 40 X
F
e
Boostpressureportoutlet DIN3852
8)
M18×1.5;12deep 40 X
Y
1
,Y
2
Pilotpressureport(pilotsignalHDonly) DIN3852
8)
M14×1.5;12deep 40 O
Z Pilotpressureport(inchsignalonlyDA..8) DIN3852
8)
M10×1;8deep 80 X
▼ Connection table for port plate 30
Ports Standard Size p
max
[bar]
4)
State
11)
A, B Workingport
Fasteningthread
SAEJ518
5)
DIN13
3/4
in
M10×1.5;17deep
450 O
S Suctionport ISO6149
10)
M33×2;19deep 5 O
6)
T
1
Drainport ISO6149
10)
M22×1.5;14deep 3 O
7)
T
2
Drainport ISO6149
10)
M22×1.5;14deep 3 X
7)
R Airbleedport ISO6149
10)
M12×1.5;12deep 3 X
X
1
,X
2
Controlpressureport(upstreamoforice) ISO6149
10)
M12×1.5;12deep 40 X
G Boostpressureportinlet ISO6149
10)
M14×1.5;11.5deep 40 X
P
S
Pilotpressureport ISO6149
10)
M14×1.5;12deep 40 X
M
A
,M
B
MeasuringportpressureA,B ISO6149
10)
M14×1.5;11.5deep 450 X
F
a
Boostpressureportinlet ISO6149
10)
M18×1.5;14.5deep 40 X
F
e
Boostpressureportoutlet ISO6149
10)
M18×1.5;14.5deep 40 X
RE-E92003/2023-10-30,BoschRexrothAG
31 Axialpistonvariablepump | A4VG series 32
Dimensions,size28
Dimensions [mm]
▼ HD–Proportionalcontrol,hydraulic,pilot-pressurerelated ▼ HW–Proportionalcontrol,hydraulic,mechanicalservo
max.
Y
1
Y
2
38.7 38.7
134
98.6
102.3
20
142
113.4
147
27
50
ø8
63
9
8
3
6
.
5
°
±
1
°
3
6
.
5
°
±
1
°
c
c
w
c
w
Versionwith
neutralposition
switch,HWDL
▼ EP –Proportionalcontrol,electric ▼ EZ–Two-pointcontrol,electric
98.6
102.4
139.1
107.7 107.7
134
max.
99.6
100.4
100.4
134
139.1
102.4
max.
▼ DG –Hydrauliccontrol,directoperated ▼ ET3/ET4 – Electroniccontrol,directoperated,twoFTDRE
P
S
70.6
67
68
134
124.5
60
60
111.5
X
1
, X
2
X
2
P
S
X
1
max.
99.6
129.5
105.5 105.5
126.9
149.9
106.4
M
B
, M
A
BoschRexrothAG,RE-E92003/2023-10-30
32 A4VG series 32 |Axialpistonvariablepump
Dimensions,size28
Dimensions [mm]
▼ ETA/ETB – Electroniccontrol,directoperated,
prepared
forBODASsoftware
99.6
129.5
105.5 105.5
126.8
126.9
149.9
106.4
PressuresensorsPR4
RE-E92003/2023-10-30,BoschRexrothAG
33 Axialpistonvariablepump | A4VG series 32
Dimensions,size28
Dimensions [mm]
DA control valve
▼ DA..2–Fixedsetting ▼ DA..3–Mechanicallyadjustablewithpositionlever
W
102.4
139.1
99.6
157
100.4
100.4
175.4
23
134
max.
max.
DetailW
Directionof
actuation
"clockwise"(3R)
W
99.6
102.4
139.1
20
23
70°
70°
187.7
159.2
8
175.4
50
100.4100.4
73
86
8
9
134
Directionofactuation
"counter-clockwise"(3L)
DetailW
max.
▼ DA..7–Fixedsettingandportsforpilotcontroldevice ▼ DA..8–Fixedsettingandinchvalvemounted
W
102.3
111.5
138.9
67
99.6
119.6 (Y)
175.4
110.4
100.4
100.4
157
23
P
S
Y
DetailW
max.
W
Z
Z
157
100.4
175.4
23
125.3
135.6
119.6
(Z)
59
91.3
100.4
DetailW
max.
BoschRexrothAG,RE-E92003/2023-10-30
34 A4VG series 32 |Axialpistonvariablepump
Dimensions,size40
Dimensions [mm]
Dimensions, size 40
Version without control module
Standard:SAEworkingportAandBtopandbottom,suctionportSbottom(02)
20
112
<5
ø127
-0.063
0
134
DetailW
HDvalve:
Without
bypass
With
bypass
Mechanical
neutralposition
adjustment
HDvalve:
With
bypass
Without
bypass
Pressurecut-off
Boost-pressurereliefvalve
FlangeSAEJ744
127-2
(C)
M8×1.25;11deep
DIN
13
Portplate
Centerofgravity
max.
Notice
Option:SAEworkingportAandB topandbottom,
suctionportS top(03),portplate(02)rotated
through180°,installationdrawingonrequest
RE-E92003/2023-10-30,BoschRexrothAG
35 Axialpistonvariablepump | A4VG series 32
Dimensions,size40
Dimensions [mm]
▼ Splined shaft DIN5480 ▼ Splined shaft DIN5480
Z ‒ W30×2×14×9g A ‒ W35×2×16×9g
45
⌀40
27
⌀80
7.5
22
35
M10 × 1.5
1)
50
⌀40
32
⌀80
9.5
28
40
M12 × 1.75
1)
▼ Splined shaft ANSIB92.1a ▼ Splined shaft ANSIB92.1a
S ‒ 11/4in 14T 12/24DP
2)
U ‒ 1in 15T 16/32DP
2)
28
9.5
56
⌀80
40
7/16-14UNC-2B
3)
⌀40
48
22
7.5
46
⌀80
30
3/8-16UNC-2B
3)
⌀40
38
1) CenterboreaccordingtoDIN332(threadaccordingtoDIN13)
2) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
3) ThreadaccordingtoASMEB1.1
BoschRexrothAG,RE-E92003/2023-10-30
36 A4VG series 32 |Axialpistonvariablepump
Dimensions,size40
Dimensions [mm]
4) Dependingontheapplication,momentarypressurepeaks
canoccur.Keepthisinmindwhenselectingmeasuringdevicesand
ttings.
5) OnlydimensionsaccordingtoSAEJ518,metricfasteningthread
isadeviationfromthestandard.
6) Pluggedforexternalboostpressuresupply.
7) Dependingoninstallationposition,T
1
orT
2
mustbeconnected
(seealsoinstallationinstructionsonpage89).
8) Thecountersinkmaybedeeperthanspeciedinthestandard.
Portsdesignedforstraightstudendsaccordingto
ENISO9974-2typeE
9) Optional,seepage79
10)Thediameterofthecountersinkdeviatesfromthestandard.
(For
details,seepage82,dimensionsofthecountersinks)
11)Thecountersinkmaybedeeperthanspeciedinthestandard.
PortsdesignedforstraightstudendsaccordingtoENISO6149-2
12)O=Mustbeconnected(pluggedondelivery)
X
=Plugged(innormaloperation)
▼ Connection table for port plate02 and 03
Ports Standard Size p
max
[bar]
4)
State
12)
A, B Workingport
Fasteningthread
SAEJ518
5)
DIN13
3/4
in
M10×1.5;17deep
450 O
S Suctionport DIN3852
8)
M33×2;18deep 5 O
6)
T
1
Drainport DIN3852
8)
M22×1.5;14deep 3 O
7)
T
2
Drainport DIN3852
8)
M22×1.5;14deep 3 X
7)
R Airbleedport DIN3852
8)
M12×1.5;12deep 3 X
X
1
,X
2
Controlpressureport(upstreamoforice) DIN3852
8)
M12×1.5;12deep 40 X
X
1
,X
2
Controlpressureport(upstreamoforice,DGonly) DIN3852
8)
M12×1.5;12deep 40 O
X
3
,X
4
9)
Strokingchamberpressureport DIN3852
8)
M12×1.5;12deep 40 X
G Boostpressureportinlet DIN3852
8)
M12×1.5;12deep 40 X
P
S
Pilotpressureport DIN3852
8)
M14×1.5;12deep 40 X
P
S
Pilotpressureport(DA..7only) DIN3852
8)
M14×1.5;12deep 40 O
Y Pilotpressureportoutlet(onlyDA..7) DIN3852
8)
M14×1.5;12deep 40 O
M
A
,M
B
MeasuringportpressureA,B DIN3852
8)
M12×1.5;12deep 450 X
M
H
Measuringport,highpressure DIN3852
8)
M12×1.5;12deep 450 X
F
a
Boostpressureportinlet DIN3852
8)
M18×1.5;12deep 40 X
F
a1
10)
Boostpressureportinlet(attachmentlter) DIN3852
8)
M18×1.5;12deep 40 X
F
e
10)
Boostpressureportoutlet DIN3852
8)
M18×1.5;12deep 40 X
F
S
10)
Linefromltertosuctionport(coldstart) DIN3852
8)
M18×1.5;12deep 40 X
Y
1
,Y
2
Pilotpressureport(pilotsignalHDonly) DIN3852
8)
M14×1.5;12deep 40 O
Z Pilotpressureport(inchsignalonlyDA..8) DIN3852
8)
M10×1;8deep 80 X
▼ Connection table for port plate 22
Ports Standard Size p
max
[bar]
4)
State
12)
A, B Workingport
Fasteningthread
SAEJ518
5)
DIN13
3/4
in
M10×1.5;17deep
450 O
S Suctionport ISO6149
11)
M33×2;19deep 5 O
6)
T
1
Drainport ISO6149
11)
M22×1.5;14deep 3 O
7)
T
2
Drainport ISO6149
11)
M22×1.5;14deep 3 X
7)
R Airbleedport ISO6149
11)
M12×1.5;12deep 3 X
X
1
,X
2
Controlpressureport(upstreamoforice) ISO6149
11)
M12×1.5;12deep 40 X
G Boostpressureportinlet ISO6149
11)
M14×1.5;11.5tief 40 X
P
S
Pilotpressureport ISO6149
11)
M14×1.5;12deep 40 X
M
A
,M
B
MeasuringportpressureA,B ISO6149
11)
M14×1.5;11.5deep 450 X
F
a
Boostpressureportinlet ISO6149
11)
M18×1.5;14.5deep 40 X
F
a1
10)
Boostpressureportinlet(attachmentlter) DIN3852
8)
M18×1.5;12deep 40 X
F
e
10)
Boostpressureportoutlet DIN3852
8)
M18×1.5;12deep 40 X
F
S
10)
Linefromltertosuctionport(coldstart) DIN3852
8)
M18×1.5;12deep 40 X
RE-E92003/2023-10-30,BoschRexrothAG
37 Axialpistonvariablepump | A4VG series 32
Dimensions,size40
Dimensions [mm]
▼ HD–Proportionalcontrol,hydraulic,pilot-pressurerelated ▼ HW–Proportionalcontrol,hydraulic,mechanicalservo
134
38.7
98.6
100.3
38.7
Y
1
Y
2
max.
9
63
ø8
50
27
8
142
111.4
20
147
3
6
.
5
°
±
1
°
3
6
.
5
°
±
1
°
c
c
w
c
w
Versionwith
neutralposition
switch,HWDL
▼ EP –Proportionalcontrol,electric ▼ EZ–Two-pointcontrol,electric
max.
137.1
98.6
134
100.3
107.7
107.7
100.4100.4
100.3
99.6
137.1
134
max.
▼ DG –Hydrauliccontrol,directoperated ▼ ET3/ET4 – Electroniccontrol,directoperated,twoFTDRE
59
59
124.5
69.6
134
68
67
125
P
S
X
1
X
1
, X
2
X
2
P
S
max.
105.5105.5
99.6
129
125
148
M
B
M
B
, M
A
BoschRexrothAG,RE-E92003/2023-10-30
38 A4VG series 32 |Axialpistonvariablepump
Dimensions,size40
Dimensions [mm]
▼ ETA/ETB – Electroniccontrol,directoperated,
prepared
forBODASsoftware
105.5105.5
99.6
129
126.8
125
148
M
B
(PR4)
PressuresensorsPR4
RE-E92003/2023-10-30,BoschRexrothAG
39 Axialpistonvariablepump | A4VG series 32
Dimensions,size40
Dimensions [mm]
DA control valve
▼ DA..2–Fixedsetting ▼ DA..3–Mechanicallyadjustablewithpositionlever
23
99.6
134
159
100.3
137.1
100.4100.4
181.7
max.
max.
max.
100.3
137.1
20
181.7
23
27
7
0
°
98.6
50
63
9
122.1
ø8
7
0
°
100.4100.4
187.7
159.2
8
181.7
134
Directionof
actuation
"clockwise"(3R)
Directionof
actuation
"Counter-
clockwise"
(3L)
max.
▼ DA..7–Fixedsettingandportsforpilotcontroldevice ▼ DA..8–Fixedsettingandinchvalvemounted
100.4100.4
Y
23
100.3
99.6
181.7
125(P
S
)
134
119.5(Y)
137.1
67
159
108.9
Y P
S
max.
max.
max.
23
135.6
123.3
119.6 (Z)
Z
Z
159
181.7
89.3
59
100.4
100.4
BoschRexrothAG,RE-E92003/2023-10-30
40 A4VG series 32 |Axialpistonvariablepump
Dimensions,size56
Dimensions [mm]
Dimensions, size 56
Version without control module
Standard:SAEworkingportAandBtopandbottom,suctionportSbottom(02)
(G)
(S)
(P
S
)
(T
2
)(T
2
)
(S)
(A) (B)
(P
S
)
(T
1
)
(F
e
)
136
20
106
<5
ø127
-0.063
0
83
DetailW
HDvalve:
Without
bypass
With
bypass
Mechanical
neutralposition
adjustment
HDvalve:
With
bypass
Without
bypass
Pressurecut-off
Boost-pressurereliefvalve
FlangeSAEJ744
127-2
(C)
M8×1.25;11deep
DIN
13
Portplate
Centerofgravity
max.
Notice
Option:SAEworkingportAandB topandbottom,
suctionportS top(03),portplate(02)rotatedthrough
180°,installationdrawingonrequest
RE-E92003/2023-10-30,BoschRexrothAG
41 Axialpistonvariablepump | A4VG series 32
Dimensions,size56
Dimensions [mm]
Version without control module
Option:SAEworkingportAandB,samesideleft,suctionportStop(13)
64.5 (T
1
)
(T
2
) 54.5
G
A, B
X
2
P
S
M
A
,
M
B
A
B
T
1
X
1
M
H
S
R
M
A
M
B
T
2
F
a
,
F
e
G
T
1
M
H
S
P
S
T
1
T
2
F
e
F
a
X
1
X
2
R
218.9(G)
256.4
109.5(T
1
,T
2
)
4(G)
143.5
113.5
76(P
S
)
129.512.7
106
23
20
83
113.5
143.5
ø19 ø19
181
75(T
2
)
213
19.5 19.5
W
106 106
200.9(F
a
,F
e
)
<5
37.5 37.5
50.8
23.8
136
50.8
23.8
ø127
-0.063
0
142
18
82(S)
82(F
e
,F
a
)
197.4(S)
205.4(A, B)
30
108.5
75(T
1
)
93
72(P
S
)
94.5
Portplate
max.
DetailW
HDvalve:
Without
bypass
With
bypass
Mechanical
neutralposition
adjustment
HDvalve:
With
bypass
Without
bypass
Pressurecut-off
Boost-pressurereliefvalve
FlangeSAEJ744
127-2
(C)
Centerofgravity
BoschRexrothAG,RE-E92003/2023-10-30
42 A4VG series 32 |Axialpistonvariablepump
Dimensions,size56
Dimensions [mm]
▼ Splined shaft DIN5480 ▼ Splined shaft DIN5480
Z ‒ W30×2×14×9g A ‒ W35×2×16×9g
45
⌀40
27
⌀68
7.5
22
35
M10 × 1.5
1)
50
⌀40
32
⌀68
9.5
28
40
M12 × 1.75
1)
▼ Splined shaft ANSIB92.1a ▼ Splined shaft ANSIB92.1a
S ‒ 11/4in 14T 12/24DP
2)
T ‒ 13/8in 21T 16/32DP
2)
28
9.5
56
⌀68
40
7/16-14UNC-2B
3)
⌀40
48
28
9.5
56
⌀68
40
7/16-14UNC-2B
3)
⌀40
48
1) CenterboreaccordingtoDIN332(threadaccordingtoDIN13)
2) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
3) ThreadaccordingtoASMEB1.1
RE-E92003/2023-10-30,BoschRexrothAG
43 Axialpistonvariablepump | A4VG series 32
Dimensions,size56
Dimensions [mm]
Ports Standard Size p
max
[bar]
4)
State
11)
A, B Workingport
Fasteningthread
SAEJ518
5)
DIN13
3/4
in
M10×1.5;17deep
450 O
S Suctionport DIN3852
8)
M33×2;18deep 5 O
6)
T
1
Drainport DIN3852
8)
M22×1.5;14deep 3 O
7)
T
2
Drainport DIN3852
8)
M22×1.5;14deep 3 X
7)
R Airbleedport DIN3852
8)
M12×1.5;12deep 3 X
X
1
,X
2
Controlpressureport(upstreamoforice) DIN3852
8)
M12×1.5;12deep 40 X
X
1
,X
2
Controlpressureport(upstreamoforice,DGonly) DIN3852
8)
M12×1.5;12deep 40 O
X
3
,X
4
9)
Strokingchamberpressureport DIN3852
8)
M12×1.5;12deep 40 X
G Boostpressureportinlet WorkingportA/Btopandbottom DIN3852
8)
M14×1.5;12deep 40 X
WorkingportA/Blateral DIN3852
8)
M12×1.5;12deep 40 X
P
S
Pilotpressureport DIN3852
8)
M14×1.5;12deep 40 X
P
S
Pilotpressureport(DA..7only) DIN3852
8)
M14×1.5;12deep 40 O
Y Pilotpressureportoutlet(onlyDA..7) DIN3852
8)
M14×1.5;12deep 40 O
M
A
,M
B
MeasuringportpressureA,B DIN3852
8)
M12×1.5;12deep 450 X
M
H
Measuringport,highpressure DIN3852
8)
M12×1.5;12deep 450 X
F
a
Boostpressureportinlet DIN3852
8)
M18×1.5;12deep 40 X
F
a1
10)
Boostpressureportinlet(attachmentlter) DIN3852
8)
M18×1.5;12deep 40 X
F
e
10)
Boostpressureportoutlet DIN3852
8)
M18×1.5;12deep 40 X
F
S
10)
Linefromltertosuctionport(coldstart) DIN3852
8)
M18×1.5;12deep 40 X
Y
1
,Y
2
Pilotpressureport(pilotsignalHDonly) DIN3852
8)
M14×1.5;12deep 40 O
Z Pilotpressureport(inchsignalonlyDA..8) DIN3852
8)
M10×1;8deep 80 X
4) Dependingontheapplication,momentarypressurepeakscan
occur.Keepthisinmindwhenselectingmeasuringdevicesand
ttings.
5) OnlydimensionsaccordingtoSAEJ518,metricfasteningthread
isadeviationfromthestandard.
6) Pluggedforexternalboostpressuresupply.
7) Dependingoninstallationposition,T
1
orT
2
mustbeconnected
(seealsoinstallationinstructionsonpage89).
8) Thecountersinkcanbedeeperthanspeciedinthestandard.
Portsdesignedforstraightstudendsaccordingto
ENISO9974-2typeE
9) Optional,seepage79
10)Thediameterofthecountersinkdeviatesfromthestandard.
(For
details,seepage82,dimensionsofthecountersinks)
11)O=Mustbeconnected(pluggedondelivery)
X
=Plugged(innormaloperation)
BoschRexrothAG,RE-E92003/2023-10-30
44 A4VG series 32 |Axialpistonvariablepump
Dimensions,size56
Dimensions [mm]
▼ HD–Proportionalcontrol,hydraulic,pilot-pressurerelated ▼ HW–Proportionalcontrol,hydraulic,mechanicalservo
38.7
38.7
111.1
109.2
Y
1
Y
2
Versionwith
neutralposition
switch,HWDL
9
63
ø8
50
27
8
154.6
20
3
6
.
5
°
±
1
°
3
6
.
5
°
±
1
°
147
120.3
c
c
w
c
w
▼ EP –Proportionalcontrol,electric ▼ EZ–Two-pointcontrol,electric
109.3
146
111.1
107.7107.7
109.3
146
112.1
100.4100.4
▼ DG –Hydrauliccontrol,directoperated
P
S
77.5
137
73.573.5
76
72
129.5
X
1
, X
2
X
2
P
S
X
1
RE-E92003/2023-10-30,BoschRexrothAG
45 Axialpistonvariablepump | A4VG series 32
Dimensions,size56
Dimensions [mm]
DA control valve
▼ DA..2–Fixedsetting ▼ DA..3–Mechanicallyadjustablewithpositionlever
100.4100.4
112.1151.5
24.5
109.3
146
197.4
max.
109.3
146
20
197.4
24.5
27
112.1
50
63
9
ø8
7
0
°
7
0
°
100.4100.4
182
153.5
8
197.4
max.
Directionof
actuation
"clockwise"(3R)
Directionof
actuation
"Counter-
clockwise"
(3L)
▼ DA..7–Fixedsettingandportsforpilotcontroldevice ▼ DA..8–Fixedsettingandinchvalvemounted
109.3
129.5(P
S
)
146
24.5
112.1
132.1(Y)
76
100.4100.4
151.5
197.4
117.9
P
S
Y
Y
Z
(Z)
Z
151.5
132.2
197.4
132.1
100.4
100.4
148.1
59
98.2
24.5
max.
max.
BoschRexrothAG,RE-E92003/2023-10-30
46 A4VG series 32 |Axialpistonvariablepump
Dimensions,size71
Dimensions [mm]
Dimensions, size71
Version without control module
Standard:SAEworkingportAandBtopandbottom,suctionportSbottom(02)
(T
1
,T
2
)
(S)
(G)
(P
S
)
(A) (B)
(S)
(T
2
)
(F
e
)
(T
1
)
(
P
S
)
W
12.7
157.3
ø127
-0.063
0
135
15
152.5
214
237
293.6
53
53
65
(G) 77
128.5 128.5
114.5
80.5 80.5
84 84
18
14.4
152.5
154
213
181
114.5
84 83
115.5 118.5
100.1
240
71.3 27.8
233
83
25
<5
57.2
76
80
8
31
31
134
239
92
15
X
2
P
S
T
1
X
1
R
M
B
M
A
T
2
T
1
P
S
T
2
B
F
a
X
1
X
2
R
G
S
S
A
F
a1
F
a
F
e
F
e
F
S
M
H
M
B
;
M
A
DetailW
HDvalve
With
bypass
Mechanical
neutral
position
adjustment
HDvalve
With
bypass
Pressurecut-off
Boost-pressurereliefvalve
FlangeSAEJ744
127-2/4
(C)
Centerofgravity
M8×1.25;10deep
DIN
13
Portplate
max.
max.
Notice
Option:SAEworkingportAandB topandbottom,
suctionportS top(03).Portplate(02)rotatedthrough
180°,installationdrawingonrequest
RE-E92003/2023-10-30,BoschRexrothAG
47 Axialpistonvariablepump | A4VG series 32
Dimensions,size71
Dimensions [mm]
Version without control module
Standard:SAEworkingportAandB,samesideleft,suctionportSbottom(10)
A, B
X
2
P
S
M
A
,
M
B
T
1
X
1
M
H
R
M
B
M
A
T
2
T
1
P
S
T
1
T
2
F
e
F
a
X
1
X
2
R
G
S
B
A
F
e
F
a
S
G
231(S)
293.6
152.5(T
1
,T
2
)
80.5(S)
157.312.7
135
15
15
92
ø25
W
214(G)
<5
27.8
27.8
ø127
-0.063
0
152.5
18
80.5 (F
e
,F
a
)
241(A, B)
83(T
1
)80(P
S
)
53
53 (T
1
)
ø25
115.5 118.5
14.4
226(F
a
)
241(F
e
)
13
24
102(A,B)
65(G)
77(P
S
)
128.5128.5
114.5
83(T
2
)
181
213
154
105.5(G)
114.5
57.2 57.2
45
45
134
(T
2
)
DetailW
HDvalve
With
bypass
Mechanical
neutral
position
adjustment
HDvalve
With
bypass
Pressurecut-off
Boost-pressure
relief
valve
FlangeSAEJ744
127-2/4
(C)
Centerofgravity
Portplate
max.
max.
Notice
Option:SAEworkingportAandB,samesideright,
suctionportStop(13),installationdrawingonrequest
BoschRexrothAG,RE-E92003/2023-10-30
48 A4VG series 32 |Axialpistonvariablepump
Dimensions,size71
Dimensions [mm]
▼ Splined shaft DIN5480 ▼ Splined shaft DIN5480
Z ‒ W35×2×16×9g A ‒ W40×2×18×9g
50
⌀45
32
⌀81
9.5
28
40
M12 × 1.75
1)
55
⌀45
37
⌀81
12
36
45
M16 × 2
1)
▼ Splined shaft ANSIB92.1a ▼ Splined shaft ANSIB92.1a
S ‒ 11/4in 14T 12/24DP
2)
T ‒ 13/8in 21T 16/32DP
2)
28
9.5
56
⌀81
40
7/16-14UNC-2B
3)
⌀45
48
28
9.5
56
⌀81
40
7/16-14UNC-2B
3)
⌀45
48
1) CenterboreaccordingtoDIN332(threadaccordingtoDIN13)
2) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,at
root,sidet,toleranceclass5
3) ThreadaccordingtoASMEB1.1
RE-E92003/2023-10-30,BoschRexrothAG
49 Axialpistonvariablepump | A4VG series 32
Dimensions,size71
Dimensions [mm]
4) Dependingontheapplication,momentarypressurepeakscan
occur.Keepthisinmindwhenselectingmeasuringdevicesand
ttings.
5) OnlydimensionsaccordingtoSAEJ518,metricfasteningthread
isadeviationfromthestandard.
6) Pluggedforexternalboostpressuresupply.
7) Dependingoninstallationposition,T
1
orT
2
mustbeconnected
(seealsoinstallationinstructionsonpage89).
8) Thecountersinkcanbedeeperthanspeciedinthestandard.
Portsdesignedforstraightstudendsaccordingto
ENISO9974-2typeE
9) Optional,seepage79
10)Thediameterofthecountersinkdeviatesfromthestandard.
(For
details,seepage82,dimensionsofthecountersinks)
11)O=Mustbeconnected(pluggedondelivery)
X
=Plugged(innormaloperation)
Ports Standard Size p
max
[bar]
4)
State
11)
A, B Workingport
Fasteningthread
SAEJ518
5)
DIN13
1
in
M12×1.75;17deep
450 O
S Suctionport DIN3852
8)
M42×2;20deep 5 O
6)
T
1
Drainport DIN3852
8)
M26×1.5;16deep 3 O
7)
T
2
Drainport DIN3852
8)
M26×1.5;16deep 3 X
7)
R Airbleedport DIN3852
8)
M12×1.5;12deep 3 X
X
1
,X
2
Controlpressureport(upstreamoforice) DIN3852
8)
M12×1.5;12deep 40 X
X
1
,X
2
Controlpressureport(upstreamoforice,DGonly) DIN3852
8)
M12×1.5;12deep 40 O
X
3
,X
4
9)
Strokingchamberpressureport DIN3852
8)
M12×1.5;12deep 40 X
G Boostpressureportinlet DIN3852
8)
M18×1.5;12deep 40 X
P
S
Pilotpressureport DIN3852
8)
M14×1.5;12deep 40 X
P
S
Pilotpressureport(DA..7only) DIN3852
8)
M14×1.5;12deep 40 O
Y Pilotpressureportoutlet(onlyDA..7) DIN3852
8)
M14×1.5;12deep 40 O
M
A
,M
B
MeasuringportpressureA,B DIN3852
8)
M12×1.5;12deep 450 X
M
H
Measuringport,highpressure DIN3852
8)
M12×1.5;12deep 450 X
F
a
Boostpressureportinlet DIN3852
8)
M26×1.5;16deep 40 X
F
a1
10)
Boostpressureportinlet(attachmentlter) DIN3852
8)
M22×1.5;14deep 40 X
F
e
10)
Boostpressureportoutlet DIN3852
8)
M22×1.5;14deep 40 X
F
S
10)
Linefromltertosuctionport(coldstart) DIN3852
8)
M22×1.5;14deep 40 X
Y
1
,Y
2
Pilotpressureport(pilotsignalHDonly) DIN3852
8)
M14×1.5;8deep 40 O
Z Pilotpressureport(inchsignalonlyDA..8) DIN3852
8)
M10×1;12deep 80 X
BoschRexrothAG,RE-E92003/2023-10-30
50 A4VG series 32 |Axialpistonvariablepump
Dimensions,size71
Dimensions [mm]
▼ HD–Proportionalcontrol,hydraulic,pilot-pressurerelated ▼ HW–Proportionalcontrol,hydraulic,mechanicalservo
152.4
38.7
38.7
122.5
Y
1
Y
2
963
ø8
50
27
8
20
3
6
.
5
°
±
1
°
3
6
.
5
°
±
1
°
163.5
165.9
147
c
c
w
c
w
Versionwith
neutralposition
switch,HWDL
▼ EP –Proportionalcontrol,electric ▼ EZ–Two-pointcontrol,electric
152.6
189.3
107.7
107.7
122.5
152.6
123.5
100.4
100.4
189.3
▼ DG –Hydrauliccontrol,directoperated
157.3
147.5
77
121.8
X
1
X
2
P
S
P
S
80
79
79
X
1
, X
2
RE-E92003/2023-10-30,BoschRexrothAG
51 Axialpistonvariablepump | A4VG series 32
Dimensions,size71
Dimensions [mm]
DA control valve
▼ DA..2–Fixedsetting ▼ DA..3–Mechanicallyadjustablewithpositionlever
123.5
11
100.4
100.4
160
189.3
152.6
215.5
max.
max.
152.6
189.3
20
215.5
ø8
11
27
123.5
50
63 9
7
0
°
7
0
°
100.4100.4
198.5
170
8
215.5
Directionof
actuation
"Counter-
clockwise"
(3L)
Directionof
actuation
"clockwise"(3R)
▼ DA..7–Fixedsettingandportsforpilotcontroldevice ▼ DA..8–Fixedsettingandinchvalvemounted
max.
189.3
157.3
152.6
160.5
215.5
100.4100.4
160
11
77
123.5
143.5
P
S
Y
(Y)
Y
Z
Z
(Z)
215.5
141.4
100.4
100.4
143.5
175.4
11
159.5
160
59
max.
BoschRexrothAG,RE-E92003/2023-10-30
52 A4VG series 32 |Axialpistonvariablepump
Dimensions,size90
Dimensions [mm]
Dimensions, size 90
Version without control module
Standard:SAEworkingportAandBtopandbottom,suctionportSbottom(02)
20
145
<5
ø152.4
-0.063
0
137.5
147
F
a1
F
e
F
S
M
H
DetailW
HDvalve
With
bypass
Mechanical
neutral
position
adjustment
HDvalve
With
bypass
Pressurecut-off
Boostpressurevalve
FlangeSAEJ744
152-2/4
(D)
M8×1.25;10deep
DIN
13
Portplate
Centerofgravity
max.
max.
Notice
Option:SAEworkingportAandB topandbottom,
suctionportS top(03).Portplate(02)rotatedthrough
180°,installationdrawingonrequest
RE-E92003/2023-10-30,BoschRexrothAG
53 Axialpistonvariablepump | A4VG series 32
Dimensions,size90
Dimensions [mm]
▼ Splined shaft DIN5480 ▼ Splined shaft DIN5480
Z ‒ W35×2×16×9g A ‒ W45×2×21×9g
50
⌀50
32
⌀81
9.5
28
40
M12 × 1.75
1)
60
⌀50
42
⌀81
12
36
50
M16 × 2
1)
▼ Splined shaft ANSIB92.1a ▼ Splined shaft ANSIB92.1a
S ‒ 13/4in 13T 8/16DP
2)
U ‒ 11/4in 14T 12/24DP
2)
36
12
75
⌀81
55
5/8-11UNC-2B
3)
⌀50
67
28
9.5
56
⌀81
40
7/16-14UNC-2B
3)
⌀50
48
1) CenterboreaccordingtoDIN332(threadaccordingtoDIN13)
2) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
3) ThreadaccordingtoASMEB1.1
BoschRexrothAG,RE-E92003/2023-10-30
54 A4VG series 32 |Axialpistonvariablepump
Dimensions,size90
Dimensions [mm]
Ports Standard Size p
max
[bar]
4)
State
11)
A, B Workingport
Fasteningthread
SAEJ518
5)
DIN13
1
in
M12×1.75;17deep
450 O
S Suctionport DIN3852
8)
M42×2;20deep 5 O
6)
T
1
Drainport DIN3852
8)
M26×1.5;16deep 3 O
7)
T
2
Drainport DIN3852
8)
M26×1.5;16deep 3 X
7)
R Airbleedport DIN3852
8)
M16×1.5;12deep 3 X
X
1
,X
2
Controlpressureport(upstreamoforice) DIN3852
8)
M16×1.5;12deep 40 X
X
1
,X
2
Controlpressureport(upstreamoforice,DGonly) DIN3852
8)
M16×1.5;12deep 40 O
X
3
,X
4
9)
Strokingchamberpressureport DIN3852
8)
M12×1.5;12deep 40 X
G Boostpressureportinlet DIN3852
8)
M18×1.5;12deep 40 X
P
S
Pilotpressureport DIN3852
8)
M18×1.5;12deep 40 X
P
S
Pilotpressureport(DA..7only) DIN3852
8)
M18×1.5;12deep 40 O
Y Pilotpressureportoutlet(onlyDA..7) DIN3852
8)
M18×1.5;12deep 40 O
M
A
,M
B
MeasuringportpressureA,B DIN3852
8)
M12×1.5;12deep 450 X
M
H
Measuringport,highpressure DIN3852
8)
M12×1.5;12deep 450 X
F
a
Boostpressureportinlet DIN3852
8)
M26×1.5;16deep 40 X
F
a1
10)
Boostpressureportinlet(attachmentlter) DIN3852
8)
M22×1.5;14deep 40 X
F
e
10)
Boostpressureportoutlet DIN3852
8)
M22×1.5;14deep 40 X
F
S
10)
Linefromltertosuctionport(coldstart) DIN3852
8)
M22×1.5;14deep 40 X
Y
1
,Y
2
Pilotpressureport(pilotsignalHDonly) DIN3852
8)
M14×1.5;12deep 40 O
Z Pilotpressureport(inchsignalonlyDA..8) DIN3852
8)
M10×1;8deep 80 X
4) Dependingontheapplication,momentarypressurepeakscan
occur.Keepthisinmindwhenselectingmeasuringdevicesand
ttings.
5) OnlydimensionsaccordingtoSAEJ518,metricfasteningthread
isadeviationfromthestandard.
6) Pluggedforexternalboostpressuresupply.
7) Dependingoninstallationposition,T
1
orT
2
mustbeconnected
(seealsoinstallationinstructionsonpage89).
8) Thecountersinkcanbedeeperthanspeciedinthestandard.
Portsdesignedforstraightstudendsaccordingto
ENISO9974-2typeE
9) Optional,seepage79
10)Thediameterofthecountersinkdeviatesfromthestandard.
(For
details,seepage82,dimensionsofthecountersinks)
11)O=Mustbeconnected(pluggedondelivery)
X
=Plugged(innormaloperation)
RE-E92003/2023-10-30,BoschRexrothAG
55 Axialpistonvariablepump | A4VG series 32
Dimensions,size90
Dimensions [mm]
▼ HD–Proportionalcontrol,hydraulic,pilot-pressurerelated ▼ HW–Proportionalcontrol,hydraulic,mechanicalservo
50
50
140.6
179
167.2
Y
1
Y
2
ø8
8
9
27
50
63
191.9
20
180.7
3
6
.
5
°
±
1
°
3
6
.
5
°
147
c
c
w
c
w
Versionwith
neutralposition
switch,HWDL
▼ EP –Proportionalcontrol,electric ▼ EZ–Two-pointcontrol,electric
203.9
167.2
140.6
179
118.5118.5
143.5107
107
207.8
170.7
▼ DG –Hydrauliccontrol,directoperated
77
173.5
7575
130.7
158.5
79
P
S
X
1
X
2
P
S
X
1
, X
2
BoschRexrothAG,RE-E92003/2023-10-30
56 A4VG series 32 |Axialpistonvariablepump
Dimensions,size90
Dimensions [mm]
DA control valve
▼ DA..2–Fixedsetting ▼ DA..3–Mechanicallyadjustablewithpositionlever
max.
153.5
237.5
14
207.4
107 107
143.5
170.7
max.
Directionof
actuation
"Counter-
clockwise"
(3L)
170.7
207.8
237.5
20
14
27
143.5
63
7
0
°
50
7
0
°
9
ø8
107107
155.5
184
237.5
8
Directionof
actuation
"clockwise"(3R)
▼ DA..7–Fixedsettingandportsforpilotcontroldevice ▼ DA..8–Fixedsettingandinchvalvemounted
max.
P
S
153.5
107 107
201.7
122.5
180.2
170.7
237.5
48.5(Y)
158.5
143.5
14
79
Y
Y
max.
237.5
170.7
185.7
14
113.5
180.2
153.5
107 107
66.5
(Z)
(Z)
Z
Z
(Z)
RE-E92003/2023-10-30,BoschRexrothAG
57 Axialpistonvariablepump | A4VG series 32
Dimensions,size125
Dimensions [mm]
Dimensions, size125
Version without control module
Standard:SAEworkingportAandBtopandbottom,suctionportSbottom(02)
160
30
<5
(P
S
)(G)
ø152.4
-0.063
0
(T
1
,T
2
)
(G)
(S)
(S) (T
2
)
(A) (B)
(P
S
)
(T
1
)
(F
e
)
154.2
157.3
DetailW
HDvalve
With
bypass
Mechanical
neutral
position
adjustment
HDvalve
With
bypass
Pressurecut-off
Boost-pressure
relief
valve
FlangeSAEJ744
152-2/4
(D)
M10×1.5;12.5deep
DIN
13
Portplate
Centerofgravity
max.
max.
Notice
Option:SAEworkingportAandB topandbottom,
suctionportS top(03).Portplate(02)rotatedthrough
180°,installationdrawingonrequest
BoschRexrothAG,RE-E92003/2023-10-30
58 A4VG series 32 |Axialpistonvariablepump
Dimensions,size125
Dimensions [mm]
Version without control module
Standard:SAEworkingportAandB,samesideleft,suctionportSbottom(10)
154.2
G
B, A
X
2
P
S
M
B
,
M
A
T
1
X
1
R
M
B
M
A
T
2
P
S
T
1
T
2
X
1
X
2
R
G
S
B
A
F
e
S
W
M
H
M
H
262.9(S)
326.4
184.5(T
1
,T
2
)
103(S)
184.512.7
160
20
30
107
ø32
239.4(G)
<5
31.8
31.8
ø152.4
-0.063
0
191
21
98 (F
e
)
273.4(B, A, F
e
)
94(T
1
)90(P
S
)
75
75
ø32
137 137
21
161.6
114.5
94(T
2
)
228.6
266.6
158.5
(G) 52
91(P
S
)
148.6
148.6
12
104(A,B)
66.7 66.7
5858
95.5
(T
2
)
DetailW
HDvalve
With
bypass
Mechanical
neutral
position
adjustment
HDvalve
With
bypass
Pressurecut-off
Boost-pressure
relief
valve
FlangeSAEJ744
152-2/4
(D)
Portplate
Centerofgravity
max.
max.
Notice
Option:SAEworkingportAandB,samesideright,
suctionportStop(13),installationdrawingonrequest
RE-E92003/2023-10-30,BoschRexrothAG
59 Axialpistonvariablepump | A4VG series 32
Dimensions,size125
Dimensions [mm]
▼ Splined shaft DIN5480 ▼ Splined shaft DIN5480
Z ‒ W40×2×18×9g A ‒ W45×2×21×9g
55
⌀55
37
⌀91
12
36
45
M16 × 2
1)
60
⌀55
42
⌀91
12
36
50
M16 × 2
1)
▼ Splined shaft ANSIB92.1a ▼ Splined shaft ANSIB92.1a
S ‒ 13/4in 13T 8/16DP
2)
T ‒ 2in 15T 8/16DP
2)
36
12
75
⌀91
55
5/8-11UNC-2B
3)
⌀55
67
36
12
88
⌀91
66
5/8-11UNC-2B
3)
⌀55
80
1) CenterboreaccordingtoDIN332(threadaccordingtoDIN13)
2) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,at
root,sidet,toleranceclass5
3) ThreadaccordingtoASMEB1.1
BoschRexrothAG,RE-E92003/2023-10-30
60 A4VG series 32 |Axialpistonvariablepump
Dimensions,size125
Dimensions [mm]
4) Dependingontheapplication,momentarypressurepeakscan
occur.Keepthisinmindwhenselectingmeasuringdevicesand
ttings.
5) OnlydimensionsaccordingtoSAEJ518,metricfasteningthreadisa
deviationfromthestandard.
6) Pluggedforexternalboostpressuresupply.
7) Dependingoninstallationposition,T
1
orT
2
mustbeconnected
(seealsoinstallationinstructionsonpage89).
8) Thecountersinkcanbedeeperthanspeciedinthestandard.
PortsdesignedforstraightstudendsaccordingtoENISO9974-2
typeE
9) Optional,seepage79
10)Thediameterofthecountersinkdeviatesfromthestandard.
(For
details,seepage82,dimensionsofthecountersinks)
11)Thecountersinkmaybedeeperthanspeciedinthestandard.
PortsdesignedforstraightstudendsaccordingtoENISO6149-2
12)O=Mustbeconnected(pluggedondelivery)
X
=Plugged(innormaloperation)
▼ Connection table for port plate02, 03, 10 and 13
Ports Standard Size p
max
[bar]
4)
State
12)
A, B Workingport
Fasteningthread
SAEJ518
5)
DIN13
11/4in
M14×2;
19deep
450 O
S Suctionport DIN3852
8)
M48×2;22deep 5 O
6)
T
1
Drainport DIN3852
8)
M33×2;18deep 3 O
7)
T
2
Drainport DIN3852
8)
M33×2;18deep 3 X
7)
R Airbleedport DIN3852
8)
M16×1.5;12deep 3 X
X
1
,X
2
Controlpressureport(upstreamoforice) DIN3852
8)
M16×1.5;12deep 40 X
X
1
,X
2
Controlpressureport(upstreamoforice,DGonly) DIN3852
8)
M16×1.5;12deep 40 O
X
3
,X
4
9)
Strokingchamberpressureport DIN3852
8)
M12×1.5;12deep 40 X
G Boostpressureportinlet DIN3852
8)
M22×1.5;14deep 40 X
P
S
Pilotpressureport DIN3852
8)
M18×1.5;12deep 40 X
P
S
Pilotpressureport(DA..7only) DIN3852
8)
M18×1.5;12deep 40 O
Y Pilotpressureportoutlet(onlyDA..7) DIN3852
8)
M18×1.5;12deep 40 O
M
A
,M
B
MeasuringportpressureA,B DIN3852
8)
M12×1.5;12deep 450 X
M
H
Measuringport,highpressure DIN3852
8)
M12×1.5;12deep 450 X
F
a
Boostpressureportinlet DIN3852
8)
M33×2;18deep 40 X
F
a1
10)
Boostpressureportinlet(attachmentlter) DIN3852
8)
M33×2;18deep 40 X
F
e
10)
Boostpressureportoutlet DIN3852
8)
M33×2;18deep 40 X
F
S
10)
Linefromltertosuctionport(coldstart) DIN3852
8)
M33×2;18deep 40 X
Y
1
,Y
2
Pilotpressureport(pilotsignalHDonly) DIN3852
8)
M14×1.5;12deep 40 O
Z Pilotpressureport(inchsignalonlyDA..8) DIN3852
8)
M10×1;8deep 80 X
▼ Connection table for port plate 22
Ports Standard Size p
max
[bar]
4)
State
12)
A, B Workingport
Fasteningthread
SAEJ518
5)
DIN13
11/4in
M14×2;
19deep
450 O
S Suctionport ISO6149
11)
M48×2;22deep 5 O
6)
T
1
Drainport ISO6149
11)
M33×2;19deep 3 O
7)
T
2
Drainport ISO6149
11)
M33×2;19deep 3 X
7)
R Airbleedport ISO6149
11)
M14×1.5;11.5deep 3 X
X
1
,X
2
Controlpressureport(upstreamoforice) ISO6149
11)
M14×1.5;11.5deep 40 X
G Boostpressureportinlet ISO6149
11)
M22×1.5;15.5deep 40 X
P
S
Pilotpressureport ISO6149
11)
M18×1.5;14.5deep 40 X
M
A
,M
B
MeasuringportpressureA,B ISO6149
11)
M14×1.5;12deep 450 X
F
a
Boostpressureportinlet ISO6149
11)
M33×2;19deep 40 X
F
a1
10)
Boostpressureportinlet(attachmentlter) DIN3852
8)
M33×2;18deep 40 X
F
e
10)
Boostpressureportoutlet DIN3852
8)
M33×2;18deep 40 X
F
S
10)
Linefromltertosuctionport(coldstart) DIN3852
8)
M33×2;18deep 40 X
RE-E92003/2023-10-30,BoschRexrothAG
61 Axialpistonvariablepump | A4VG series 32
Dimensions,size125
Dimensions [mm]
▼ HD–Proportionalcontrol,hydraulic,pilot-pressurerelated ▼ HW–Proportionalcontrol,hydraulic,mechanicalservo
153.1
191.5
50
50
180
Y
1
Y
2
9
27
50
63
⌀8
8
204.4
3
6
.
5
°
±
1
°
3
6
.
5
°
±
1
°
20
193.5
147
c
c
w
c
w
Versionwith
neutralposition
switch,HWDL
▼ EP –Proportionalcontrol,electric ▼ EZ–Two-pointcontrol,electric
216.7
180
153.1
191.5
118.5
118.5
156
107
107
220.2
183.5
▼ DG –Hydrauliccontrol,directoperated ▼ ET7/ET8 – Electroniccontrol,directoperated,twoDRE5
184.5
91
90
P
S
X
1
,
X
2
9696
143.5
186
X
2
X
1
P
S
M
B
128.5
158.5
128.5
179.5
221.3
158
198
M
B
, M
A
max.
BoschRexrothAG,RE-E92003/2023-10-30
62 A4VG series 32 |Axialpistonvariablepump
Dimensions,size125
Dimensions [mm]
▼ ETA/ETB – Electroniccontrol,directoperated,
prepared
forBODASsoftware
max.
152.3
128.5
158.5
128.5
M
B
(PR4)
179.5
221.3
158
198
PressuresensorsPR4
RE-E92003/2023-10-30,BoschRexrothAG
63 Axialpistonvariablepump | A4VG series 32
Dimensions,size125
Dimensions [mm]
DA control valve
▼ DA..2–Fixedsetting ▼ DA..3–Mechanicallyadjustablewithpositionlever
max.
183.5
220.2
156
17
160
266.9
107107
27
63 9
17
50
156
183.5
220.2
266.9
20
ø8
7
0
°
7
0
°
107107
192.5
162.5
8
266.9
Directionof
actuation
"Counter-
clockwise"
(3L)
Directionof
actuation
"clockwise"(3R)
max.
▼ DA..7–Fixedsettingandportsforpilotcontroldevice ▼ DA..8–Fixedsettingandinchvalvemounted
max.
Y
Y
P
S
107
17
160
135
192.7
107
156
91
48.5(Y)
266.9
214.5
183.5
184.5(P
S
)
17
126(Z)
193
66.5(Z)
160
107107
183.5
198.5(Z)
Z
Z
max.
BoschRexrothAG,RE-E92003/2023-10-30
64 A4VG series 32 |Axialpistonvariablepump
Dimensions,throughdrive
Dimensions [mm]
Dimensions, through drive
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
Withoutthroughdrive
● ● ● ● ● ● 00
82-2(A) 5/8in9T16/32DP
1)
● ● ● ● ● ● 01
▼ N00 (without boost pump, without through drive)/F00 (with boost pump, without through drive)
A1 A1
N00−withoutboostpump
F00−withboostpump
NG A1 (N00) A1 (F00)
28 213.9 223.4
40 220.2 235.7
56 239.4 256.4
71 279.1 293.6
90 287 301
125 320.9 326.4
▼ F01
5)
, sizes 28 to 71 (with boost pump)
Flange
SAEJ744:82-2(A)
Hub
forsplinedshaft:5/8in9T16/32DP
1)
▼ K01
5)
, sizes 28 to 71 (without boost pump)
Flange
SAEJ744:82-2(A)
Hub
forsplinedshaft:5/8in9T16/32DP
1)
⌀82.55
+0.05
+0.01
A4
A5
A3
106.4
A1
106.4
A2
⌀17.5
4×M10×1.5;15deep
2)3)
(tomountingange)
O-ring
4)
⌀17.5
A2
⌀82.55
+0.05
+0.01
A4
A5
A3
106.4
A1
106.4
4×M10×1.5;15deep
2)3))
(tomountingange)
O-ring
4)
NG A1 A2 A3 A4 A5 NG A1 A2 A3 A4 A5
28 227.9 7.5 8.2 15.2 33.9 28 227.9 7.5 7.5 − 33.2
40 239.7 9 10 17 46 40 234.2 7.5 8.5 − 34.5
56 261.4 10 11 18 38.3 56 254.9 7.5 9 − 30.3
71 297.6 9 10 17 47.8 71 297.6 9 10 17.2 47.8
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe2-holehorizontalorthe
2-holeverticalversionisused.
RE-E92003/2023-10-30,BoschRexrothAG
65 Axialpistonvariablepump | A4VG series 32
Dimensions,throughdrive
Dimensions [mm]
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
82-2(A) 5/8in9T16/32DP
1)
● ● ● ● ● ● 01
▼ F01
4)
, size 90 (with boost pump)
Flange
SAEJ744:82-2(A)
Hub
forsplinedshaft:5/8in9T16/32DP
1)
▼ K01
4)
, size 90
(without boost pump)
Flange
SAEJ744:82-2(A)
Hub
forsplinedshaft:5/8in9T16/32DP
1)
106.4
304
106.4
8
⌀82.55
+0.05
+0.01
9
34
O-ring
4)
4×M10×1.5;15deep
2)3)
(tomountingange)
106.4
304
106.4
9
34
⌀82.55
+0.05
+0.01
8
4×M10×1.5;15deep
2)3)
O-ring
4)
(tomountingange)
▼ F01
4)
, size 125 (with boost pump)
Flange
SAEJ744:82-2(A)
Hub
forsplinedshaft:5/8in9T16/32DP
1)
▼ K01
4)
, size 125 (without boost pump)
Flange
SAEJ744:82-2(A)
Hub
forsplinedshaft:5/8in9T16/32DP
1)
106.4
9
⌀82.55
+0.05
+0.01
10.8
35.8
330.9
106.4
4×M10×1.5;15deep
2)3)
O-ring
4)
(tomountingange)
106.4
⌀82.55
+0.05
+0.01
10.8
35
330.9
106.4
4×M10×1.5;15deep
2)3)
O-ring
4)
(tomountingange)
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe2-holehorizontalorthe
2-holeverticalversionisused.
BoschRexrothAG,RE-E92003/2023-10-30
66 A4VG series 32 |Axialpistonvariablepump
Dimensions,throughdrive
Dimensions [mm]
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
82-2(A) 3/4in11T16/32DP
1)
– ● ● ● – – 52
101-2(B) 7/8in13T16/32DP
1)
● ● ● ● ● ● 02
▼ F52
4)
, sizes 40 to 71 (with boost pump)
Flange
SAEJ744:82-2(A)
Hub
forsplinedshaft:3/4in11T16/32DP
1)
106.4
A2
⌀82.55
+0.05
+0.01
A5
A1
106.4
A3
A4
⌀20.7
4×M10×1.5;15deep
2)3)
(tomountingange)
O-ring
4)
NG A1 A2 A3 A4 A5
40 239.7 9 10 17 38
56 261.4 10 11 18 39
71 297.6 9 10 17 50
▼ F02, sizes 28 to 56 (with boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:7/8in13T16/32DP
1)
▼ K02, sizes 28 to 56 (without boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:7/8in13T16/32DP
1)
x1.75; 19 DEEP/tief
A2
174
⌀101.6
+0.05
+0.01
⌀A6
A1
146
A3
A4
A5
(tomountingange)
2×M12×1.75;19deep
2)3)
O-ring
4)
A2
174
⌀101.6
+0.05
+0.01
⌀24
A1
146
A3
A4
A5
(tomountingange)
O-ring
4)
2×M12×1.75;19deep
2)3)
NG A1 A2 A3 A4 A5 ⌀A6 NG A1 A2 A3 A4 A5
28 230.4 9.7 10.7 16.2 42.3 24 28 230.4 8 9.7 13.5 38.4
40 240.7 9.7 11 16 42.6 24 40 240.7 8 9.7 13 38.4
56 262.4 11 12 18.5 48.4 25 56 262.4 11 12 20.5 43.4
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe2-holehorizontalorthe
2-holeverticalversionisused.
RE-E92003/2023-10-30,BoschRexrothAG
67 Axialpistonvariablepump | A4VG series 32
Dimensions,throughdrive
Dimensions [mm]
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
101-2(B) 7/8in13T16/32DP
1)
● ● ● ● ● ● 02
▼ F02
4)
, size 71 (with boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:7/8in13T16/32DP
1)
▼ K02
4)
, size 71 (without boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:7/8in13T16/32DP
1)
⌀101.6
+0.05
+0.01
146
9.8
43.7
300.6
146
12.6
15.6
⌀24
(tomountingange)
8×M12×1.75;21deep
2)3)
O-ring
4)
⌀101.6
+0.05
+0.01
146
9
40.4
300.6
146
9.8
12
(tomountingange)
8×M12×1.75;21deep
2)3)
O-ring
4)
▼ F02
4)
, size 90 (with boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:7/8in13T16/32DP
1)
▼ K02
4)
, size 90 (without boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:7/8in13T16/32DP
1)
146
10.1
45
305
146
11
16.1
⌀24
⌀101.6
+0.05
+0.01
(tomountingange)
4×M12×1.75;18deep
2)3)
O-ring
4)
⌀101.6
+0.05
+0.01
146
8
39
305
146
11
15
⌀24
(tomountingange)
4×M12×1.75;18deep
2)3)
O-ring
4)
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe2-holehorizontalorthe
2-holeverticalversionisused.
BoschRexrothAG,RE-E92003/2023-10-30
68 A4VG series 32 |Axialpistonvariablepump
Dimensions,throughdrive
Dimensions [mm]
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
101-2(B) 7/8in13T16/32DP
1)
● ● ● ● ● ● 02
1in15T16/32DP
1)
● ● ● ● ● ● 04
▼ F02
4)
, size 125 (with boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:7/8in13T16/32DP
1)
▼ K02
4)
, size 125 (without boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:7/8in13T16/32DP
1)
⌀101.6
+0.05
+0.01
146
10
42.9
330.9
146
10.9
15.9
⌀24
(tomountingange)
8×M12×1.75;21deep
2)3)
O-ring
4)
⌀101.6
+0.05
+0.01
146
8
39.4
330.9
146
11
14
⌀24
(tomountingange)
8×M12×1.75;21deep
2)3)
O-ring
4)
▼ F04, sizes 28 to 56 (with boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:1in15T16/32DP
1)
▼ K04, sizes 28 to 56 (without boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:1in15T16/32DP
1)
A2
174
⌀101.6
+0.05
+0.01
⌀A6
A1
146
A3
A4
A5
(tomountingange)
O-ring
4)
2×M12×1.75;19deep
2)3)
A7
A2
174
⌀101.6
+0.05
+0.01
⌀A6
A1
146
A3
A4
A5
(tomountingange)
O-ring
4)
NG A1 A2 A3 A4 A5 ⌀A6 NG A1 A2 A3 A4 A5 ⌀A6
A7
2)3)
28 230.4 9.7 10.7 14.7 42.4 27 28 230.4 − 10.7 16.2 42.4 − M12×1.75;19deep
40 240.7 9.7 11 16.5 51.6 27 40 240.7 9.7 11 18.5 51.6 27 M12×1.75;18.7deep
56 262.4 11 12 18 49.1 27 56 262.4 − 9 17.5 61.7 27 M12×1.75;19deep
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe2-holehorizontalorthe
2-holeverticalversionisused.
RE-E92003/2023-10-30,BoschRexrothAG
69 Axialpistonvariablepump | A4VG series 32
Dimensions,throughdrive
Dimensions [mm]
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
101-2(B) 1in15T16/32DP
1)
● ● ● ● ● ● 04
▼ F04
4)
, size 71 (with boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:1in15T16/32DP
1)
▼ K04
4)
, size 71 (without boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:1in15T16/32DP
1)
⌀101.6
+0.05
+0.01
146
9.8
56.2
300.6
146
13
15.5
⌀27
(tomountingange)
8×M12×1.75;21deep
2)3)
O-ring
4)
⌀27
9.8
53
12
17
⌀101.6
+0.05
+0.01
146
146
300.6
(tomountingange)
8×M12×1.75;21deep
2)3)
O-ring
4)
▼ F04
4)
, size 90 (with boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:1in15T16/32DP
1)
▼ K04
4)
, size 90 (without boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:1in15T16/32DP
1)
146
9
51
305
146
10
15
⌀27
⌀101.6
+0.05
+0.01
(tomountingange)
4×M12×1.75;18deep
2)3)
O-ring
4)
146
9.9
51
305
146
11
15.9
⌀27
⌀101.6
+0.05
+0.01
(tomountingange)
4×M12×1.75;18deep
2)3)
O-ring
4)
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe2-holehorizontalorthe
2-holeverticalversionisused.
BoschRexrothAG,RE-E92003/2023-10-30
70 A4VG series 32 |Axialpistonvariablepump
Dimensions,throughdrive
Dimensions [mm]
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
101-2(B) 1in15T16/32DP
1)
● ● ● ● ● ● 04
127-2(C) 1in15T16/32DP
1)
– ● – – – – 09
▼ F04
4)
, size 125 (with boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:1in15T16/32DP
1)
▼ K04
4)
, size 125 (without boost pump)
Flange
SAEJ744:101-2(B)
Hub
forsplinedshaft:1in15T16/32DP
1)
146
10.9
45.9
330.9
146
11
15.4
⌀27
⌀101.6
+0.05
+0.01
(tomountingange)
8×M12×1.75;18deep
2)3)
O-ring
4)
146
11
330.9
146
10.8
16.3
⌀27
46.8
⌀101.6
+0.05
+0.01
(tomountingange)
8×M12×1.75;18deep
2)3)
O-ring
4)
▼ F09, size 40 (with boost pump)
Flange
SAEJ744:127-2(C)
Hub
forsplinedshaft:1in15T16/32DP
1)
▼ K09, size 40 (without boost pump)
Flange
SAEJ744:127-2(C)
Hub
forsplinedshaft:1in15T16/32DP
1)
14
213
⌀127
+0.05
+0.01
⌀27
244.7
181
15
20.5
55.2
O-ring
4)
2×M16×2;20deep
2)3)
(tomountingange)
11.4
213
⌀127
+0.05
+0.01
⌀27
244.7
181
14
18.9
56
O-ring
4)
2×M16×2;20deep
2)3)
(tomountingange)
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe2-holehorizontalorthe
2-holeverticalversionisused.
RE-E92003/2023-10-30,BoschRexrothAG
71 Axialpistonvariablepump | A4VG series 32
Dimensions,throughdrive
Dimensions [mm]
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
127-2(C) 11/4in14T12/24DP
1)
– – ● ● – –
07
127-2/4(C)
– – – – ● ●
▼ F07
4)
, size 56 (with boost pump)
Flange
SAEJ744:127-2(C)
Hub
forsplinedshaft:11/4in14T12/24DP
1)
▼ K07
4)
, size 56 (without boost pump)
Flange
SAEJ744:127-2(C)
Hub
forsplinedshaft:11/4in14T12/24DP
1)
14
213
266.4
181
14
17.5
53.2
⌀127
+0.05
+0.01
O-ring
4)
2×M16×2;20deep
2)3)
(tomountingange)
⌀32.7
14
213
266.4
181
10.8
17.3
51.8
⌀127
+0.05
+0.01
O-ring
4)
2×M16×2;20deep
2)3)
(tomountingange)
▼ F07, size 71 (with boost pump)
Flange
SAEJ744:127-2(C)
Hub
forsplinedshaft:11/4in14T12/24DP
1)
▼ K07, size 71 (without boost pump)
Flange
SAEJ744:127-2(C)
Hub
forsplinedshaft:11/4in14T12/24DP
1)
15
213
303.6
181
15.6
18.6
56.8
⌀127
+0.05
+0.01
(tomountingange)
O-ring
4)
2×M16×2;24deep
2)3)
(tomountingange)
O-ring
4)
2×M16×2;24deep
2)3)
⌀33.6
13.5
213
303.6
181
17.5
20.5
58.2
⌀127
+0.05
+0.01
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe2-holehorizontalorthe
2-holeverticalversionisused.
BoschRexrothAG,RE-E92003/2023-10-30
72 A4VG series 32 |Axialpistonvariablepump
Dimensions,throughdrive
Dimensions [mm]
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
127-2(C) 11/4in14T12/24DP
1)
– – ● ● – –
07
127-2/4(C)
– – – – ● ●
▼ F07
4)
, size 90 (with boost pump)
Flange
SAEJ744:127-2/4(C)
Hub
forsplinedshaft:11/4in14T12/24DP
1)
▼ K07
4)
, size 90 (without boost pump)
Flange
SAEJ744:127-2/4(C)
Hub
forsplinedshaft:11/4in14T12/24DP
1)
114.5
114.5
181
13
59.4
309
181
14
16.5
⌀127
+0.05
+0.01
(tomountingange)
4×M16×2;
20deep
2)3)
4×M12×1.75;18deep
2)3)
O-ring
4)
181
9.9
52.4
309
181
14
17.4
⌀33.5
114.5
114.5
⌀127
+0.05
+0.01
(tomountingange)
4×M16×2;
20deep
2)3)
4×M12×1.75;18deep
2)3)
O-ring
4)
▼ F07
4)
, size 125 (with boost pump)
Flange
SAEJ744:127-2/4(C)
Hub
forsplinedshaft:11/4in14T12/24DP
1)
▼ K07
4)
, size 125 (without boost pump)
Flange
SAEJ744:127-2/4(C)
Hub
forsplinedshaft:11/4in14T12/24DP
1)
⌀33.5
181
14
60.1
335.9
181
16
18.5
114.5
114.5
⌀127
+0.05
+0.01
(tomountingange)
4×M16×2;
24deep
2)3)
4×M12×1.75;18deep
2)3)
O-ring
4)
181
16.8
52.5
335.9
181
14
20.3
114.5
114.5
⌀33.5
⌀127
+0.05
+0.01
(tomountingange)
4×M16×2;
24deep
2)3)
4×M12×1.75;18deep
2)3)
O-ring
4)
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
atroot,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe4-hole,the2-holehorizontal
orthe2-holeverticalversionisused.
RE-E92003/2023-10-30,BoschRexrothAG
73 Axialpistonvariablepump | A4VG series 32
Dimensions,throughdrive
Dimensions [mm]
Flange SAE J744 Hub for splined shaft 28 40 56 71 90 125 Code
152-2/4(D) W352×16×9g(accordingtoDIN5480)
– – – – ● – 73
13/4in13T8/16DP
1)
– – – – – ● 69
▼ F73
4)
, size 90 (with boost pump)
Flange
SAEJ744:152-2/4(D)
Hub
forsplinedshaft:W352×16×9gaccordingtoDIN5480
▼ K73
4)
, size 90 (without boost pump)
Flange
SAEJ744:152-2/4(D)
Hub
forsplinedshaft:W352×16×9gaccordingtoDIN5480
12
266.6
309
228.6
13
14
48.5
161.6
161.6
200
⌀152.4
+0.05
+0.01
(tomountingange)
6×M20×2.5;20deep
2)3)
O-ring
4)
12.8
266.6
309
228.6 14
47.1
161.6
161.6
200
⌀152.4
+0.05
+0.01
(tomountingange)
6×M20×2.5;20deep
2)3)
O-ring
4)
▼ F69
4)
, size 125 (with boost pump)
Flange
SAEJ744:152-2/4(D)
Hub
forsplinedshaft:13/4in13T8/16DP
1)
▼ K69
4)
, size 125 (without boost pump)
Flange
SAEJ744:152-2/4(D)
Hub
forsplinedshaft:13/4in13T8/16DP
1)
14
266.6
343.9
228.6
18
19
58.8
161.6
161.6
200
⌀38.23
+0.13
0
⌀152.4
+0.05
+0.01
(tomountingange)
6×M20×2.5;20deep
2)3)
O-ring
4)
14
266.6
343.9
228.6 20.2
73.2
161.6
161.6
200
⌀152.4
+0.05
+0.01
(tomountingange)
6×M20×2.5;20deep
2)3)
O-ring
4)
1) InvolutesplineaccordingtoANSIB92.1a,30°pressureangle,
at
root,sidet,toleranceclass5
2) ThreadaccordingtoDIN13
3) DesignaccordingtoVDI2230withμ=0.1forscrewquality8.8
accordingtoISO898-1
4) O-ringincludedinthescopeofdelivery
5) Pleasestateinplaintextwhetherthe2-hole,the4-holeor
the
4+2-holeverticalversionisused.
BoschRexrothAG,RE-E92003/2023-10-30
74 A4VG series 32 |Axialpistonvariablepump
Overviewofmountingoptions
Dimensions [mm]
Overview of mounting options
Through drive
1)
Mounting options–2nd pump
Flange Hub for
splined
shaft
Code A4VG/32
NG (shaft)
A4VG/35
NG (shaft)
A10VG/10
NG (shaft)
External gear pump
2)
82-2(A) 5/8in F/K01 ‒ ‒ ‒ AZPF,AZPSNG4…28,AZPWNG5…22
3/4in F52 ‒ ‒ ‒ AZPFNG4…28
101-2(B) 7/8in F/K02 ‒ ‒ 18(S) AZPN-11NG20…25,AZPG-22NG28…100
1in F/K04 28(S) ‒ 28(S) ‒
45(S)
127-2(C)
3)
1in F/K09 40(U) ‒ ‒ ‒
11/4in F/K07 40,56,71(S) 56,71,90(S7) 63(S) ‒
127-4(C)
3)
1in F/K09 ‒ ‒ ‒
11/4in F/K07 71(S) 71,90(S7) ‒ ‒
152-2(D) W35 F/K73 90(Z) ‒ ‒ ‒
13/4in F/K69 90,125(S) ‒ ‒ ‒
152-4(D) W35 F/K73 90(Z) ‒ ‒ ‒
13/4in F/K69 90,125(S) ‒ ‒ ‒
Through drive
1)
Mounting options–2nd pump
Flange Hub for
splined
shaft
Code A10V(S)O/31
NG (shaft)
A10VO/32
NG (shaft)
A10V(S)O/5x
NG (shaft)
A11VO/1x
NG (shaft)
A1VO/10
82-2(A) 5/8in F/K01 18(U) ‒ 10,18(U) ‒ ‒
3/4in F52 18(S) ‒ 10,18(S) ‒ 18,28(S3)
101-2(B) 7/8in F/K02 28(S)
45
(U)
45(U) 28(S)
45(U)
‒ 18,28,35(S4)
1in F/K04 45(S) 45(S) 45(S)
60,63,72(U)
40(S) 35(S5)
127-2(C) 1in F/K09 71,88(U) 71(U) ‒ ‒ ‒
11/4in F/K07 71,88(S)
100
(U)
71(S)
100(U)
85,100(U) ‒ ‒
127-4(C)
3)
1in F/K09 ‒ 45(S)
71(U)
60,
63,72(U) ‒ ‒
11/4in F/K07 ‒ 71(S) 60,63,72(S)
85,
100(U)
60(S) ‒
152-2(D) W35 F/K73 ‒ ‒ ‒ ‒ ‒
13/4in F/K69 ‒ ‒ ‒ ‒ ‒
152-4(D) W35 F/K73 ‒ ‒ ‒ ‒ ‒
13/4in F/K69 140(S) 140,180(S) ‒ 95,130,145(S) ‒
Notice
Themountingoptionslistedonlyapplyfordriveshaft
versionswithundercut.Pleasecontactusfordriveshafts
withoutundercut.
1) Availabilityoftheindividualsizes,seetypecodeonpage2.
2) BoschRexrothrecommendsspecialversionsofthegearpumps.
Pleasecontactus.
3) A10VO/5Xwith4-holeangeattachableonlytoA4VGNG90to
125
RE-E92003/2023-10-30,BoschRexrothAG
75 Axialpistonvariablepump | A4VG series 32
CombinationpumpsA4VG+A4VG
Dimensions [mm]
Combination pumps A4VG + A4VG
Total length A
A4VG A4VG 2nd pump
1)
1st pump NG28 NG40 NG56 NG71 NG90 NG125
NG28 453.8 ‒ ‒ ‒ ‒ ‒
NG40 464.1 480.4 ‒ ‒ ‒ ‒
NG56 485.8 502.1 522.8 ‒ ‒ ‒
NG71 524.0 539.3 560.0 597.2 ‒ ‒
NG90 528.4 544.7 565.4 602.6 610.0 ‒
NG125 554.3 571.6 592.3 629.5 644.9 670.3
Byusingcombinationpumps,itispossibletohave
independentcircuitswithouttheneedforsplitter
gearboxes.
Whenorderingcombinationpumpsthetypedesignations
forthe1standthe2ndpumpmustbelinkedbya"+".
Orderexample:
A4VG56EP3D1/32R-NAC02F073SP + A4VG56EP3D1/32R-
NSC02F003SP
Atandempump,withtwopumpsofequalsize,is
permissiblewithoutadditionalsupports,assumingthatthe
dynamicmassaccelerationdoesnotexceedmaximum10g
(=98.1m/s
2
).
Fromsize71upward,werecommendusingthe4-hole
mountingange.
Forcombinationpumpsconsistingofmorethantwo
pumps,
themountingangemustberatedforthe
permissiblemomentofinertia,pleasecontactus.
A
A4VG
(2st
pump)
A4VG
(1st
pump)
Notice
▶ Thecombinationpumptypecodeisshownin
shortenedformintheorderconrmation.
▶ Thepermissiblethrough-drivetorquesaretobe
observed(seepage12).
1) 2ndpumpwithoutthroughdriveandwithboostpump,F00
BoschRexrothAG,RE-E92003/2023-10-30
76 A4VG series 32 |Axialpistonvariablepump
High-pressurereliefvalves
High-pressure relief valves
Thetwohigh-pressurereliefvalvesprotectthehydrostatic
gear(pumpandmotor)fromoverloading.Theylimitthe
maximumpressureintherespectivehigh-pressurelineand
servesimultaneouslyasboostvalves.
Thehigh-pressurereliefvalvesareexclusivelyintendedto
protectthesystemfromhigh-pressurepeaksuntilthe
controldynamicsofthepressurecut-offensurethe
intendedmaximumworkingpressure.
Ahydraulic-mechanicalorelectronicpressurecut-offmust
beprovidedforpermanenthighpressurelimitation.
Setting ranges
High-pressure relief valve,
direct operated (NG28 to 56)
Diff
erential pressure setting
∆p
HD
Settingrangevalve3,5
∆p
HD
250to420bar
(see
typecode)
420bar
400bar
360bar
340bar
320bar
300bar
270bar
250bar
Settingrangevalve4,6
∆p
HD
100to250bar
(see
typecode)
250bar
230bar
200bar
150bar
100bar
High-pressure relief valve,
pilot operated (NG71 to 125)
Diff
erential pressure setting
∆p
HD
Settingrangevalve1
∆p
HD
100to420bar
(see
typecode)
420bar
400bar
360bar
340bar
320bar
300bar
270bar
250bar
230bar
200bar
150bar
100bar
Settings on high-pressure relief valve A and B
Differentialpressuresetting Δp
HD
=...bar
TestpressureoftheHDvalve(atq
V1
)
(p
max
= Δp
HD
+p
Sp
)
p
max
=...bar
Thevalvesettingsaremadeatn=1000rpmandatV
gmax
(q
v1
).Theremaybedeviationswithotheroperating
parameters.
▶ Whenordering,statethedifferentialpressuresetting
∆p
HD
intheplaintext.
▼ Circuit diagram
1)
High-pressurereliefvalves
2) 2)
R F
a
F
e
M
B
BP
S
a b
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
Example: Δp drive design = 370bar (p
A,B
– p
Sp
)
Max. working
pressure p
A,B
‒ Boost
pressure p
Sp
+ Safety = Differential
pressure ∆p
HD
390bar ‒ 20bar + 30bar = 400bar
▶ TestpressureoftheHDvalve(atq
V1
):
p
max
=420bar(p
max
=Δp
HD
+p
Sp
)
▼ Setting diagram
Max.workingpressure p
A,B
atportA,B
p
Sp
p
Sp
p
max
q
v1
q
v max
(n = n
max
)
≥ 30 bar
Δp drivedesign
boost
pressure
Setpressure
3)
Pressurecut-off
DifferentialpressureΔp
HD
HDvalvesetting
Testpressure HD valve p
max
Safety
(n=1000rpm)
1) Size28withoutportF
a1
andF
S
2)
Onlysizes28to71aredesignedwithinletltrationinX
1
/X
2
3)
Notapplicableforversionwithoutpressurecut-off.
RE-E92003/2023-10-30,BoschRexrothAG
77 Axialpistonvariablepump | A4VG series 32
Pressurecut-off
Key
HDvalve High-pressurereliefvalve
Testpressure
HDvalvep
max
Thefactory-setpressurevaluesetatq
V1
Differential
pressureHD
valveΔp
HD
Testpressure
HDvalve(abs.)minustheboost
pressuresetting
Maximum
working
pressurep
A,B
Thetotaldesignofthehydrostaticdriveisbased
onthemaximumworkingpressurep
A,B
.
Itiscomposedofthefeedpressuresettingand
theΔpdrivedesign.
ΔpDrivedesign Differentialpressurevaluedeterminingthe
available
torqueatthehydraulicmotor(p
A,B
– p
Sp
).
Boostpressure
p
Sp
Boostpressuresettingofthe
boost-pressurereliefvalve
Safety
Requireddistancebetweenmaximumworking
pressureandtestpressureofthehigh-pressure
reliefvalve
topreventconstantresponseofthe
high-pressurereliefvalvesatmaximumworking
pressure.
Notice
Uponresponseofthehigh-pressurereliefvalve,
thepermissibletemperatureandviscositymustbe
compliedwith.
Bypass function
Aconnectionbetweenthetwohigh-pressurepassagesA
andBcanbeestablishedusingthebypassfunction
(e.g.formachinetowing).
▶ Towing speed
Themaximumtowingspeeddependsonthegearratio
inthevehicleandmustbecalculatedbythevehicle
manufacturer.Thecorrespondingowofq
v
=30l/min
maynotbeexceeded.
▶ Towing distance
Onlytowthevehicleoutoftheimmediatedangerzone.
Forfurtherinformationonthebypassfunction,
seetheinstructionmanual.
Notice
Thebypassfunctionandthepilotoperatedhigh-pressure
reliefvalves(size71to125)arenotillustratedinthe
circuitdiagrams.
Pressure cut-off
Thepressurecut-offisapressurecontrolwhich,after
reachingthesetpressure,adjuststhedisplacementofthe
pumpbacktoV
gmin
.
Thisvalvelimitsthepermanentmaximumworking
pressurebyreducingthecontrolpressureandthus
preventsthehigh-pressurereliefvalvesfromresponding.
Thecontroldynamicsofthepressurecut-offbycontrol
pressurereductiondependsontheselectedcontrol
device,rotationalspeedandoperatingpointofthepump.
Thesystemmustbedesignedinsuchawaythatthe
controldynamicsofthepressurecut-offaresufcientto
avoidoverloadingofthehigh-pressurereliefvalves.
Thesettingrangeofthepressurecut-offmaybeanywhere
withintheentireworkingpressurerange.However,itmust
beset30barlowerthanthesettingvalueofthehigh-pres-
surereliefvalves(seesettingdiagram,page76).
Thefunctionofthepressurecut-offincombinationwitha
DGcontrolisdescribedonpage20.
Pleasestatethesettingvalueofthepressurecut-offin
plaintextwhenordering.
▼ Circuit diagram with pressure cut-off
Example: Two-point control, electric, EZ1D/EZ2D
R F
a
F
e
M
B
BP
S
ab
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
Pressurecut-off
BoschRexrothAG,RE-E92003/2023-10-30
78 A4VG series 32 |Axialpistonvariablepump
Mechanicalstrokelimiter
Dimensions [mm]
Mechanical stroke limiter
Themechanicalstrokelimiterisanauxiliaryfunction
allowingthemaximumdisplacementofthepumptobe
steplesslyreduced,regardlessofthecontrolmoduleused.
Bymeansoftwothreadedpins,thestrokeofthestroking
pistonandthusthemaximumswivelangleofthepump
canbelimited.
Notice
Threadedpinsaremountedfromtheinside(screw-out
protection)andcannolongerberemovedfromthe
outside.
Dimensions
[mm]
M1M1
M3 M4
M2
NG M1 max. M2 M3 M4
28 125.5 40.1 24 −
40 125.5 38.1 24 −
56 141.5 44 25.5 −
71 151 86.3 − 28.5
90 155 95.7 31.5 −
125 177.5 104.5 − 35.5
▼ Circuit diagram
1)
R F
a
F
e
M
B
BP
S
a b
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
F
S
F
a1
Mechanicalstrokelimiter
2) 2)
1) Size28withoutportF
a1
andF
S
2)
Onlysizes28to71aredesignedwithinletltrationinX
1
/X
2
RE-E92003/2023-10-30,BoschRexrothAG
79 Axialpistonvariablepump | A4VG series 32
StrokingchamberpressureportX3andX4
Dimensions [mm]
Stroking chamber pressure port X
3
and X
4
Dimensions
[mm]
T2
T3 T4T1 T1
X
4
X
3
NG T1 T2 T3 T4
28 92 40.1 − 24
40 92 38.1 − 24
56 104.5 44 − 25
71 113.5 86.3 28 −
90 111.5 95.7 − 30
125 136 104.5 34 −
Ports Standard
3)
Size p
max
[bar]
4)
State
5)
X
3
,X
4
Strokingchamberpressureport DIN3852 M12×1.5;12deep 40 X
▼ Circuit diagram
1)
R F
a
F
e
M
B
BP
S
a b
X
1
X
2
G
M
H
S
M
A
A
X
3
X
4
T
1
T
2
F
S
F
a1
2) 2)
1) Size28withoutportF
a1
andF
S
2)
Onlysizes28to71aredesignedwithinletltrationinX
1
/X
2
3)
Thecountersinkcanbedeeperthanspeciedinthestandard.
Portsdesignedforstraightstudendsaccordingto
ENISO9974-2typeE.
4) Dependingontheapplication,momentarypressurepeakscan
occur.Keepthisinmindwhenselectingmeasuringdevicesand
ttings.
5) X=Plugged(innormaloperation)
BoschRexrothAG,RE-E92003/2023-10-30
80 A4VG series 32 |Axialpistonvariablepump
MeasuringportsMA,MB,MH
Dimensions [mm]
Measuring ports M
A
, M
B
, M
H
Working port (port plate) based on DIN3852
ThemeasuringportsM
A
,M
B
andM
H
aredesignedbased
onDIN3852anddesignedforstraightstudendsaccording
toENISO9974-2typeE.Thecountersinkmay,however,
bedeeperthanspeciedinthestandard.
▼ Porting pattern (example port plate 02)
M
A
M
B
B
AM
H
▼ Countersink of the measuring ports M
A
, M
B
and M
H
⌀26
2.7
M12×1.5;
12deep
max.
Working port (port plate) based on ISO6149
ThemeasuringportsM
A
,M
B
andaredesignedbasedon
ISO6149anddesignedforstraightstudendsaccordingto
ENISO6149-2.Thecountersinkmay,however,bedeeper
thanspeciedinthestandard.
▼ Porting pattern (example port plate 22)
M
A
(PR4)
M
B
(PR4)
▼ Countersink of the measuring ports M
A
, M
B
⌀26
2.7
M14×1.5;
11.5tief
max.
RE-E92003/2023-10-30,BoschRexrothAG
81 Axialpistonvariablepump | A4VG series 32
Filtrationintheboostpumpsuctionline
Filtration in the boost pump suction line
Version S
Filter version Suction lter
Recommendation
Withcontaminationindicator,
withbypass
Recommended ow resistance at lter element
Atν=30mm
2
/s,n = n
max
Δp=0.1bar
Atν=1000mm
2
/s,n = n
max
Δp=0.3bar
Pressure at suction port S
Continuousp
S
min
(ν≤30mm
2
/s) ≥0.8barabsolute
Short-term,atacoldstart(t<3
min)
≥0.5barabsolute
Maximumpressurep
S
max
≤5barabsolute
UseofversionSispreferred.
Thesuctionlterisnotincludedinthescopeofdelivery.
▼ Circuit diagram
1)
R F
a
F
a1
F
e
F
S
M
B
BP
S
a b
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
2) 2)
1) Size28withoutportF
a1
andF
S
2)
Onlysizes28to71aredesignedwithinletltrationinX
1
/X
2
BoschRexrothAG,RE-E92003/2023-10-30
82 A4VG series 32 |Axialpistonvariablepump
Filtrationintheboostpumppressureline
Dimensions [mm]
Filtration in the boost pump pressure line
Version D
Ports for external boost circuit ltration
Ports
Boostpressureinlet PortF
a
Boostpressureoutlet PortF
e
Filter version Boost pressure lter
Recommendation Withcontaminationindicator,
with
coldstartvalve
3)
Filterarrangement Separateinthepressureline(inlinelter)
Theboostpressurelterisnotincludedinthescope
ofdelivery.
Notice
▶ Filterswithabypassarenot recommended.
Pleasecontactusforapplicationswithabypass.
▶ OnversionswithDGcontrol(withpilotpressurenot
fromaboostcircuit),altermustbeusedthatfullls
therequirementswithregardtoltrationofthe
hydraulicuid(seepage7).
▶ Thepressuredropatthelterisviscosity-and
contamination-dependent.Notethemaximum
permissiblepressureoftheboostpumpin
combinationwiththesetfeedpressure.
▼ Circuit diagram
1)
R F
a
F
a1
F
e
F
S
M
B
BP
S
a b
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
2) 2)
▼ Dimensions of the countersinks F
e
, F
a1
, F
S
F
a1
F
e
F
S
⌀D1⌀D3
⌀D2
NG ⌀D1 ⌀D2 ⌀D3
40 24
+0.130
−0
24
+0.130
−0
24
+0.130
−0
56 24
+0.130
−0
24
+0.130
−0
24
+0.130
−0
71 27.5
+0.130
−0
27.5
+0.130
−0
27.5
+0.130
−0
90 27.5
+0.130
−0
27.5
+0.130
−0
27.5
+0.130
−0
125 40
+0.160
−0
40
+0.160
−0
40
+0.160
−0
1) Size28withoutportF
a1
andF
S
2)
Onlysizes28to71aredesignedwithinletltrationinX
1
/X
2
3)
Sizes40to125,externalpipingofcoldstartvalveviaportF
S
required
RE-E92003/2023-10-30,BoschRexrothAG
83 Axialpistonvariablepump | A4VG series 32
Filtrationintheboostpumppressureline
Dimensions [mm]
1) Toprotectthelterelementagainstelectrostaticchargebuildup,
thehydraulicuidmusthaveaminimumconductivityof
300pS/monversionswithattachmentlterF,PandB.Please
contactusifthisvaluecannotbeobserved.
2) Onlysizes40to71aredesignedwithinletltrationinX
1
/X
2
Version F
1)
Attachment lter with cold start valve
Filter version Attachment lter
Recommendation Versionwithcontamination
indicator,seeP,B
(differential
pressureΔp=5bar)
Filtergrade(absolute) 20μm
Filtermaterial Glassber
Pressurerating 100bar
Filterarrangement Mountedonpump
Theattachmentlterisequippedwithacoldstartvalve
andtherebyprotectsthepumpfromdamage.Thevalve
opensatowresistanceofΔp≥6bar.
Notice
Thepressuredropatthelterisviscosity-and
contamination-dependent.Notethemaximum
permissiblepressureoftheboostpumpincombination
withthesetfeedpressure.
▼ Filter characteristic curve
Differentialpressure/owbehavioraccordingtoISO3968
(valid
fornon-contaminatedlterelement).
10
0.1
1
10
100
10050
200
1000 mm
2
/s
30 mm
2
/s
Flow[l/min]
DifferentialpressureΔp[bar]
NG125
NG71…90
NG40…56
NG71…90
NG40…56
NG125
▼ Circuit diagram
R F
a
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
a
b
2) 2)
▼ Dimensions
F6
F7
F4
F5
F1
F2
F3
A
DetailA
rotated
by90°
NG F1 F2 F3 F4 F5 F6 F7
40 201.7 47.7 160 175 135 0 42
56 218.4 64.4 163 178 138 0 42
71 239 46.5 185 203.5 155 16 29
90 248.5 56 179 197.5 149 0 45
125 235.9 59.4 201 219.5 171 0 53
BoschRexrothAG,RE-E92003/2023-10-30
84 A4VG series 32 |Axialpistonvariablepump
Filtrationintheboostpumppressureline
Version P
1)
Attachment lter with cold start valve and visual
contamination indicator
FiltrationsimilartoversionF,howeverwithadditional
visualcontaminationindicator.
Technical data
Displaytype Green/redwindow
Differentialpressure
(switchingpressure)
Δp=5bar
▼ Circuit diagram
R F
a
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
a
b
2) 2)
▼ Dimensions
F6
F4
F5
F1
F2
F3
A
F7
DetailA
rotated
by90°
NG F1 F2 F3 F4 F5 F6 F7
40 201.7 47.7 160 175 135 0 78.5
56 218.4 64.4 163 178 138 0 78.5
71 239 46.5 185 203.5 155 16 65.5
90 248.5 56 179 197.5 149 0 81.5
125 235.9 59.4 201 219.5 171 0 89.5
Version B
1)
Attachment lter with cold start valve and electric
contamination indicator
FiltrationsimilartoversionF,howeverwithadditional
electriccontaminationindicator.
Technical data
Displaytype Electric
Connectorversion
(mating
connector,seepage86)
DEUTSCHDT04-2P-EP04
Differentialpressure(switching
pressure)
Δp=5bar
Maximumswitchingcapacity 12VDC 24W
24VDC 48W
TypeofprotectionIP67 DIN/EN60529
▼ Circuit diagram
R F
a
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
1
a b
2
P
2) 2)
▼ Dimensions
F6
F7
F4
F5
F1
F2
F3
A
DetailA
rotated
by90°
NG F1 F2 F3 F4 F5 F6 F7
40 201.7 47.7 160 175 135 0 42
56 218.4 64.4 163 178 138 0 42
71 239 46.5 185 203.5 155 16 29
90 248.5 56 179 197.5 149 0 45
125 235.9 59.4 201 219.5 171 0 53
1) Toprotectthelterelementagainstelectrostaticchargebuildup,
thehydraulicuidmusthaveaminimumconductivityof
300pS/monversionswithattachmentlterF,PandB.Please
contactusifthisvaluecannotbeobserved.
2) Onlysizes40to71aredesignedwithinletltrationinX
1
/X
2
RE-E92003/2023-10-30,BoschRexrothAG
85 Axialpistonvariablepump | A4VG series 32
Externalboostpressuresupply
Dimensions [mm]
1) Size28withoutportF
a1
andF
S
2)
Onlysizes28to71aredesignedwithinletltrationinX
1
/X
2
External boost pressure supply
Version E
Thisvariationshouldbeusedinversionswithoutinte-
gratedboostpump(Nand/orK).
PortSisplugged.
TheboostpressuresupplycomesfromportF
a
.
TheltershouldbeinstalledseparatelyonportF
a
before
theboostpressuresupply.
Toensurethefunctionalreliability,maintaintherequired
cleanlinesslevelfortheboostuidfedinatportF
a
(seepage7).
▼ Circuit diagram
1)
R F
a
F
e
M
B
BP
S
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
a b
F
S
F
a1
2) 2)
BoschRexrothAG,RE-E92003/2023-10-30
86 A4VG series 32 |Axialpistonvariablepump
Connectorforsolenoids
Connector for solenoids
DEUTSCH DT04-2P-EP04
▶ P:Molded,2-pin,withoutbidirectionalsuppressor
diode(standard).
▶ Q:Molded,2-pin,withbidirectionalsuppressordiode
(onlyforswitchingsolenoidsoncontrolmodule
EZandDA)
Thefollowingtypeofprotectionensueswiththeinstalled
matingconnector:
▶ IP67(DIN/EN60529)and
▶ IP69K(DIN40050-9)
Theprotectioncircuitwithbidirectionalsuppressordiode
isneededtolimitovervoltages.Overvoltagesarecaused
byswitchingoffthecurrentwithswitches,relaycontacts
orbydiskonnectingthematingconnectorwhilevoltageis
applied.
▼ Switching symbol
Withoutbidirectionalsuppressor
diode
Withbidirectionalsuppressor
diode
▼ Mating connector DEUTSCH DT06-2S-EP04
Consisting of DT designation
1housing DT06-2S-EP04
1wedge W2S
2sockets 0462-201-16141
Thematingconnectorisnotincludedinthescopeof
delivery.ThiscanbesuppliedbyBoschRexrothon
request(materialnumberR902601804).
Notice
▶ Ifnecessary,youcanchangethepositionofthe
connectorbyturningthesolenoid.
▶ Theprocedureisdenedintheinstructionmanual.
RE-E92003/2023-10-30,BoschRexrothAG
87 Axialpistonvariablepump | A4VG series 32
Rotaryinchvalve
Dimensions [mm]
Rotary inch valve
Therotaryinchvalveallowsforanyreductionofpilot
pressure,independentlyofdrivespeed,through
mechanicalactuationofthecontrollever.Thecontrol
leverisequippedwithaninternalrotationallimiter±90°
(drawingitem1and2).
Thevalveisarrangedseparatelyfromthepumpandis
connectedtothepumpbyahydrauliccontrollineviaport
P
S
(maximumlinelength:approx.2m).
Therotaryinchvalvemustbeorderedseparately.
NG Material
number
Direc
tion of actuation
of the control lever
Throttle cross-
section ⌀
28,40,
56,71,90
R902048734 Clockwise
4.6
R902048735 Counter-clockwise
4.6
R902070172 Clockwise
2.7
R902066994 Counter-clockwise
2.7
125 R902048740 Clockwise
4.7
R902048741 Counter-clockwise
4.7
Notice
Therotaryinchvalvecanbeusedregardlessofthe
controlmodule.Ifnecessary,thepositionofthecontrol
levercanbechanged.
▼ Circuit diagram
Hydraulic control, speed related
DA with separately attached rotary inch valve
R F
a
F
e
M
B
BP
S
ab
X
1
X
2
G
M
H
S
M
A
A
T
1
T
2
X
T F
S
F
a1
Rotaryinchvalve
Dimensions
Tighteningtorque25Nm
max.angleofrotation85°
clockwise
counter-clockwise
1
1
2
2
X
T
72
63
50
27
8
30
14
36
4
8
ø8
24.5
ø18
M8 × 30; DIN 912
16
32
52
2(T)
16
2(X)
24.5
52
32
Notice
Topreventdamagetotherotaryinchvalve,apositive
mechanicalstopof±85°mustbeprovidedforthecon-
trolleveronthecustomerside.
Ports Standard
1)
Size p
max
[bar]
2)
State
3)
X Pilotpressure
port
DIN3852 M14x1.5;
12deep
40 O
T Drain
port DIN3852 M14x1.5;
12deep
3 O
1) Thecountersinkmaybedeeperthanspeciedinthestandard.
Ports
designedforstraightstudendsaccordingto
ENISO9974-2typeE.
2) Dependingontheapplication,momentarypressurepeakscan
occur.Keepthisinmindwhenselectingmeasuringdevicesand
ttings.
3) O=Mustbeconnected(pluggedondelivery)
BoschRexrothAG,RE-E92003/2023-10-30
88 A4VG series 32 |Axialpistonvariablepump
Installationdimensionsforcouplingassembly
Dimensions [mm]
Installation dimensions for coupling assembly
Toensurethatrotatingcomponents(couplinghub)and
xedcomponents(housing,retainingring)donotcome
intocontactwitheachother,theinstallationconditions
describedheremustbeobserved.Thisdependsonthe
pumpsizeandthesplinedshaft.
SAE splined shaft (spline according to ANSI B92.1a)
SplinedshaftSand/orT
Theouterdiameterofthecouplinghubmustbesmaller
thantheinnerdiameteroftheretainingring(dimension
d
2
)intheareanearthedriveshaftcollar
(dimensionx
2
–x
3
).
Observediameterofreliefonsizes28and40.
x
2
x
1
7
x
3
⌀d
4
⌀72
⌀80
⌀d
3
⌀d
2 min
⌀d
1
Couplinghub
(NG28and40only)
(NG40only)
(NG28only)
NG ⌀d
1
SAE splined
shaft
⌀d
1
DIN splined
shaft
⌀d
2min
⌀d
3
⌀d
4
x
1
x
2
x
3
x
4
28 33.5 32.1 43.4 55±0.1 101.60
−0.054
3.3+0.2 9.5−0.5 8 +0.9
−0.6
10+0.9
−0.6
40 38.5 37.1 51.4 63
±0.1 1270
−0.063
4.3+0.2 12.7−0.5 8 +0.9
−0.6
10+0.9
−0.6
56 38.5 37.1 54.4 68
±0.1 1270
−0.063
7.0+0.2 12.7−0.5 8 +0.9
−0.6
10+0.9
−0.6
71 43.5 42.1 66.5 81
±0.1 1270
−0.063
7.0+0.2 12.7−0.5 8 +0.9
−0.6
10+0.9
−0.6
90 48.5 47.1 66.5 81
±0.1 152.40
−0.063
6.8+0.2 12.7−0.5 8 +0.9
−0.6
10+0.9
−0.6
125 53.5 52.1 76.3 91
±0.1 152.40
−0.063
7.0+0.2 12.7−0.5 8 +0.9
−0.6
10+0.9
−0.6
DIN splined shaft (spline according to DIN 5480)
SplinedshaftZorA
Theouterdiameterofthecouplinghubmustbesmaller
thanthecasediameterd
3
intheareanearthedriveshaft
collar(dimensionx
2
–x
4
).
Observediameterofreliefonsizes28and40.
Couplinghub
x
1
x
4
⌀d
4
⌀d
3
⌀d
2 min
⌀d
1
7
⌀
72 (NG 28)
⌀
80 (NG 40)
x
2
(NG28and40only)
(NG40only)
(NG28only)
RE-E92003/2023-10-30,BoschRexrothAG
89 Axialpistonvariablepump | A4VG series 32
Installationinstructions
Installation instructions
General
Theaxialpistonunitmustbelledwithhydraulicuidand
airbledduringcommissioningandoperation.Thismust
alsobeobservedfollowingalongerstandstillastheaxial
pistonunitmayemptyviathehydrauliclines.
Particularlyintheinstallationposition"driveshaft
upwards",llingandairbleedingmustbecarriedout
completelyasthereis,forexample,adangerofdryrunning.
Theleakageinthehousingareamustbedirectedtothe
reservoirviathehighestdrainport(T
1
,T
2
).Forcombination
pumps,theleakagemustbedrainedoffateachsingle
pump.
Ifashareddrainlineisusedforseveralunits,makesure
thattherespectivecasepressureineachunitisnot
exceeded.Theshareddrainlinemustbedimensionedto
ensurethatthemaximumpermissiblecasepressureofall
connectedunitsisnotexceededinanyoperatingcondition,
particularlyatcoldstart.Ifthisisnotpossible,separate
drainlinesmustbelaid.
Topreventthetransmissionofstructure-bornenoise,
useelasticelementstodecoupleallconnectinglinesfrom
allvibration-capablecomponents(e.g.reservoir,frame
parts).
Underalloperatingconditions,thesuctionlineanddrain
linemustowintothereservoirbelowtheminimumuid
level.Thepermissiblesuctionheighth
S
resultsfromthe
totalpressureloss;itmustnot,however,behigherthan
h
Smax
=800mm.
The
suctionpressureatportSmustalsonotfallbelowthe
minimumvalueof0.8barabsoluteduringoperation
(coldstart0.5barabsolute).
Whendesigningthereservoir,ensurethatthereisadequate
distancebetweenthesuctionlineandthedrainline.
Werecommendusingabafe(bafeplate)between
suctionlineanddrainline.Abafeimprovestheair
separationabilityasitgivesthehydraulicuidmoretime
fordesorption.Apartfromthat,thispreventstheheated
returnowfrombeingdrawndirectlybackintothesuction
line.Thesuctionportmustbesuppliedwithair-free,
calmedandcooledhydraulicuid.
Installation position
Seethefollowingexamples1to12.
Further
installationpositionsareavailableuponrequest.
Recommendedinstallationposition:1and2.
Notice
▶ Size71to125
Withthe"driveshaftupwards"installationposition,
anR
1
portisnecessary(specialversion).
▶ Foroptimumfunctionanddynamicsoftheaxial
pistonunit,acompletellingofthetwostroking
chambersX
1
andX
2
withhydraulicuidisrequired.
Byswivelingtheswashplateseveraltimesduring
commissioning,thiscanusuallybebeensured.In
caseofunfavorableinstallationpositions,air
bleedingofthestrokingchambersmaytakesome
time,sowerecommendllingthestrokingchambers
viaportsX
1
andX
2
beforeinstallation.
▶ Incertaininstallationpositions,aninuenceonthe
adjustmentorcontrolcanbeexpected.Gravity,dead
weightandcasepressurecancauseminor
characteristicshiftsandchangesinresponsetime.
Key
R Airbleedport
R
1
Airbleedport(specialversion)
S Suctionport
G Boostpressureportinlet
T
1
,T
2
Drainport
SB Bafe(bafeplate)
h
tmin
Minimumrequiredimmersiondepth7.87in(200mm)
h
min
Minimumrequireddistancetoreservoirbottom3.94in
(100mm)
h
Smax
Maximumpermissiblesuctionheight31.5in(800mm)
BoschRexrothAG,RE-E92003/2023-10-30
90 A4VG series 32 |Axialpistonvariablepump
Installationinstructions
Below-reservoir installation (standard)
Below-reservoirinstallationmeansthattheaxialpiston
unitisinstalledoutsideofthereservoirbelowthe
minimumuidlevelofthereservoir.
▼ Installation position 1
Air bleed Filling
R G
1)
,S
T
1
R
S
h
t min
h
min
SB
G
T
2
M
Fillingunit
▼ Installation position 2
Air bleed Filling
T
2
G
1)
,S
T
2
S
T
1
h
t min
h
min
SB
G
M
Fillingunit
▼ Installation position 3
Air bleed Filling
T
2
G
1)
,S
T
1
T
2
S
G
M
h
t min
h
min
SB
Fillingunit
▼ Installation position 4
Air bleed Filling
R
1
G
1)
,S
M
R
T
1
T
2
S
R
1
h
t min
h
min
SB
G
Fillingunit
▼ Installation position 5
Air bleed Filling
T
1
G
1)
,S
M
h
t min
h
min
T
1
S
T
2
G
SB
Fillingunit
▼ Installation position 6
Air bleed Filling
T
2
G
1)
,S
h
t min
h
min
T
1
S
T
2
G
SB
M
Fillingunit
1) Recommendation:Fillingwithllingunit.
When
llingwithoutllingunit,thepumpmustbelled
atthehighestdrainport.
RE-E92003/2023-10-30,BoschRexrothAG
91 Axialpistonvariablepump | A4VG series 32
Installationinstructions
Above-reservoir installation
Above-reservoirinstallationmeansthattheaxialpiston
unitisinstalledabovetheminimumuidlevelofthe
reservoir.
Observethemaximumpermissiblesuctionheight
h
Smax
=31.50in(800mm).
Recommendationforinstallationposition10
(driveshaftupward):Acheckvalveinthedrainline
(crackingpressure7.5psi(0.5bar))canpreventthe
housingareafromdraining.
▼ Installation position 7
Air bleed Filling
R G
1)
,S
S
SB
h
t min
h
min
h
S max
T
1
R
T
2
G
M
Fillingunit
▼ Installation position 8
Air bleed Filling
T
2
G
1)
,S
S
SB
h
t min
h
min
h
S max
T
1
T
2
G
M
Fillingunit
▼ Installation position 9
Air bleed Filling
T
2
G
1)
,S
T
1
T
2
S
SB
h
t min
h
min
h
S max
G
M
Fillingunit
▼ Installation position 10
Air bleed Filling
R
1
G
1)
,S
R
R
1
T
1
T
2
0.5 bar
S
h
t min
h
min
h
S max
SB
M
G
Fillingunit
▼ Installation position 11
Air bleed Filling
T
1
G
1)
,S
T
1
T
2
S
SB
h
t min
h
min
h
S max
G
M
Fillingunit
▼ Installation position 12
Air bleed Filling
T
2
G
1)
,S
T
1
T
2
S
SB
h
t min
h
min
h
S max
G
M
Fillingunit
1) Recommendation:Fillingwithllingunit.
When
llingwithoutllingunit,thepumpmustbelled
atthehighestdrainport.
BoschRexrothAG,RE-E92003/2023-10-30
92 A4VG series 32 |Axialpistonvariablepump
Projectplanningnotes
Project planning notes
▶ Thepumpisdesignedtobeusedinaclosedcircuit.
▶ Theprojectplanning,installationandcommissioningof
theaxialpistonunitrequirestheinvolvementofskilled
personnel.
▶ Beforeusingtheaxialpistonunit,pleasereadthe
correspondinginstructionmanualcompletelyand
thoroughly.Ifnecessary,thiscanberequestedfrom
BoschRexroth.
▶ Beforenalizingyourdesign,pleaserequestabinding
installationdrawing.
▶ Thespecieddataandnotescontainedhereinmustbe
observed.
▶ Dependingontheoperatingconditionsoftheaxial
pistonunit(workingpressure,uidtemperature),
thecharacteristiccurvemayshift.
▶ Preservation:Ouraxialpistonunitsaresuppliedas
standardwithpreservationprotectionforamaximum
of12months.Iflongerpreservationprotectionis
required(maximum24months),pleasespecifythisin
plaintextwhenplacingyourorder.Thepreservation
periodsapplyunderoptimalstorageconditions,details
ofwhichcanbefoundinthedatasheet90312orthe
instructionmanual.
▶ Notallversionsoftheproductareapprovedforusein
asafetyfunctionaccordingtoISO13849.Please
consulttheresponsiblecontactpersonatBosch
Rexrothifyourequirereliabilityparameters
(e.g.MTTF
D
)forfunctionalsafety.
▶ Dependingonthetypeofcontrolused,electromagnetic
effectscanbeproducedwhenusingsolenoids.
Applyingadirectvoltagesignal(DC)tosolenoidsdoes
notcreateelectromagneticinterference(EMI)noristhe
solenoidaffectedbyEMI.Electromagneticinterference
(EMI)potentialexistswhenoperatingandcontrolling
asolenoidwithamodulateddirectvoltagesignal
(e.g.PWMsignal)Appropriatetestingandmeasures
shouldbetakenbythemachinemanufacturertoensure
othercomponentsoroperators(e.g.withpacemaker)
arenotaffectedbythispotential.
▶ Pressurecut-off(hydraulicorelectronic)isnotasuf-
cientsafeguardagainstpressureoverload.Therefore,
apressurereliefvalvemustbeaddedtothehydraulic
system(integratedinthepumporexternalinthesys-
tem).Observethetechnicallimitsofthepressurerelief
valveshere.
▶ Withdynamicpowerow(changeofpumpsto
operationasamotor)amaximumof95%V
g
max
is
permissible.Werecommendconguringthesoftware
accordingly.
▶ Pleasenotethatahydraulicsystemisanoscillating
system.Thiscanlead,forexample,tothestimulation
thenaturalfrequencywithinthehydraulicsystem
duringoperationatconstantrotationalspeedovera
longperiodoftime.Thestimulatorfrequencyofthe
pumpis9timestherotationalspeedfrequency.
Thiscanbeprevented,forexample,withsuitably
designedhydrauliclines.
▶ Pleasenotethedetailsregardingthetighteningtorques
ofportthreadsandotherthreadedjointsinthe
instructionmanual.
▶ Theportsandfasteningthreadsaredesignedforthe
p
max
permissiblepressuresoftherespectiveports,
seetheconnectiontables.Themachineorsystem
manufacturermustensurethattheconnectingelements
andlinescorrespondtothespeciedapplication
conditions(pressure,ow,hydraulicuid,
temperature)withthenecessarysafetyfactors.
▶ Theserviceportsandfunctionportsareonlyintended
toaccommodatehydrauliclines.
RE-E92003/2023-10-30,BoschRexrothAG
93 Axialpistonvariablepump | A4VG series 32
Safetyinstructions
Safety instructions
▶ Duringandshortlyafteroperation,thereisariskof
burnsontheaxialpistonunitandespeciallyonthe
solenoids.Taketheappropriatesafetymeasures(e.g.
bywearingprotectiveclothing).
▶ Movingpartsincontrolequipment(e.g.valvespools)
can,undercertaincircumstances,getstuckinposition
asaresultofcontamination(e.g.contaminated
hydraulicuid,abrasion,orresidualdirtfrom
components).Asaresult,thehydraulicuidowand
thebuild-upoftorqueintheaxialpistonunitcanno
longerrespondcorrectlytotheoperator’s
specications.Eventheuseofvariouslterelements
(externalorinternalowltration)willnotruleout
afaultbutmerelyreducetherisk.
Themachine/systemmanufacturershouldtestwhether
additionalmeasuresarerequiredonthemachinefor
therelevantapplicationinordertobringthedriven
consumerintoasafeposition(e.g.,safestop)and
makesureanymeasuresareproperlyimplemented.
▶ Movingpartsinhigh-pressurereliefvalvesmayin
certaincircumstancesbecomestuckinanundened
positionduetocontamination(e.g.impurehydraulic
uid).Thiscanresultinrestrictionorlossofload-
holdingfunctionsinliftingwinches.
Themachine/systemmanufacturermustcheckwhether
additionalmeasuresarerequiredonthemachinefor
therelevantapplicationinordertokeeptheloadin
asafepositionandensuretheyareproperly
implemented.
BoschRexrothAG,RE-E92003/2023-10-30
Bosch Rexroth AG
Glockeraustraße 2
89275 Elchingen
Germany
Tel. +49 7308 82-0
info.ma@boschrexroth.de
www.boschrexroth.com
©BoschRexrothAG1994. All rights reserved, also regarding any disposal,
exploitation, reproduction, editing, distribution, as well as in the event of
applications for industrial property rights. The data specied within only
serves todescribe the product. No statements concerning acertain condition
orsuitability for acertain application canbederived from our information.
The information given does not release the user from the obligation of own
judgment and verication. It must be remembered that our products are
subject to anatural process of wear and aging.
94 A4VG series 32 |Axialpistonvariablepump