RE-A 92703/12.2016, Bosch Rexroth AG
A10VO 63DRS/53...
Features
▶ Variable pump with axial piston rotary group in swash-
plate design for hydrostatic drives in open circuit.
▶ The flow is proportional to the drive speed and the
displacement.
▶ The flow can be infinitely varied by adjusting the swash-
plate angle.
▶ Stable bearing for long service life
▶ High permissible drive speed
▶ Favorable power-to-weight ratio – compact dimensions
▶ Low noise
▶ Excellent suction characteristics
▶ Electro-hydraulic pressure control
▶ Power control
▶ Electro-proportional swivel angle control
▶ Short response times
▶ Sizes 10 to 100
▶ Nominal pressure 3600 psi (250 bar)
▶ Maximum pressure 4550 psi (315bar)
▶ Open circuit
Axial piston variable pump
A10VO series 52 and 53
RE-A 92703
Edition: 12.2016
Replaces: 03.2015
Inhalt
Ordering code series 52/53 2
Hydraulic fluids 7
Operating pressure range 9
Technical data 10
DR – Pressure control 14
DRG – Pressure control, remotely operated 15
DRF (DFR) / DRS (DFR1) / DRSC– Pressure and flow
control 16
LA... – Pressure, flow and power controller 18
LA... – Variations 19
ED – Electro-hydraulic pressure control 20
ER – Electro-hydraulic pressure control 21
EP – Electro-proportional control 22
EK – Electro-proportional control with controller cut-off 23
EP(K).DF / EP(K).DS / EP(K) – with pressure and flow
control 24
EP.ED / EK.ED – with electro-hydraulic pressure control 25
Dimensions size 10 to 100 26
Dimensions through drive 61
Overview of attachment options 65
Combination pumps A10VO + A10VO 66
Connector for solenoids 67
Installation instructions 68
Project planning notes 72
Americas
Bosch Rexroth AG, RE-A 92703/12.2016
2 A10VO series 52 and 53 | Axial piston variable pump
Ordering code series 52
1) See data sheet 92709 for precise specification
Ordering code series 52
01 02 03 04 05 06 07 08 09 10 11 12
A10V(S) O / 52 – V
Axial piston unit 10 28 45 60 85
01 Swashplate design, variable, nominal pressure 3600psi (250bar),
●
– – – –
A10VS
maximum pressure 4550psi (315bar)
–
● ● ● ● A10V
Operation mode
02 Pump, open circuit
O
Size (NG)
03 Geometric displacement, see table of values on page 10
10 28 45 60 85
Control devices
04 Pressure control hydraulic
● ● ● ● ● DR
with flow controller hydraulic X-T open
● ● ● ● ● DFR
X-T plugged with flushing function
● ● ● ● ● DFR1
without flushing function
–
● ● ● ● DRSC
with pressure cut-off hydraulic remotely operated
● ● ● ● ● DRG
electric negative control U = 12 V
–
● ● ● ● ED71
U = 24 V
–
● ● ● ● ED72
electric positive control U = 12 V
–
● ● ● ● ER71
U = 24 V
–
● ● ● ● ER72
Differential pressure control electric control (negative control)
–
○ ○ ○ ● EF..
1)
Series
05 Series 5, Index 2
52
Direction of rotation
06 View on drive shaft clockwise
R
counter-clockwise
L
Sealing material
07 FKM (fluor-caoutchouc)
V
Drive shaft
08 splined shaft standard shaft
● ● ● ● ● S
ANSI B92.1a similar to shaft "S" however for higher input torque
–
● ● ● ● R
reduced diameter, limited suitability for through drive
● ● ● ● ● U
similar to shaft "U", however for higher torque
–
● ● ● ● W
Parallel keyed shaft ISO 3019-1 limited suitability for through drive
● ● ● ● ● K
Tapered with Woodruff key
–
● ● ● ● C
Mounting flange
09 ISO 3019-1 (SAE) 2-hole
● ● ● ● ● C
4-hole
– – –
●
–
D
Note
▶ Observe the engineering notes regarding each
control device
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Ordering code series 52
3
01 02 03 04 05 06 07 08 09 10 11 12
A10V(S) O / 52 – V
Working port 10 28 45 60 85
10 SAE flange port
UNC fastening thread
rear not for through drive
–
● ● ● ● 61
at side, opposite for through drive
–
● ● ● ● 62
ISO threaded port rear not for through drive
●
– – – –
64
Through drive (for attachment options, see page 62)
11 Flange ISO 3019-1 Hub for splined shaft
2)
Diameter Diameter
without through drive ● ● ● ● ●
N00
82-2 (A) 5/8 in 9T 16/32DP
–
● ● ● ●
K01
3/4 in 11T 16/32DP
–
● ● ● ●
K52
101-2 (B) 7/8 in 13T 16/32DP
–
● ● ● ●
K68
1 in 15T 16/32DP
– –
● ● ●
K04
127-4 (C) 1 1/4 in 14T 12/24DP
– – –
● ●
K15
1 1/2 in 17T 12/24DP
– – – –
●
K16
127-2 (C) 1 1/4 in 14T12/24DP
– – – –
●
K07
1 1/2 in 17T 12/24DP
– – – –
●
K24
Connector for solenoids
12 Without connector (without solenoid, with hydraulic control only, without code)
● ● ● ● ●
DEUTSCH – molded connector, 2-pin – without suppressor diode (for electric controls)
–
● ● ● ● P
●
= Available
○
= On request – = Not available
Note
▶ Note the project planning notes on page68.
▶ In addition to the ordering code, please specify the
relevant technical data when placing your order.
2) According to ANSI B92.1a
Bosch Rexroth AG, RE-A 92703/12.2016
4 A10VO series 52 and 53 | Axial piston variable pump
Ordering code series 53
1) See data sheet 92709 for precise specification
Ordering code series 53
01 02 03 04 05 06 07 08 09 10 11 12
A10V(S) O / 53 – V
Axial piston unit 18 28 45 63 72 85 100
01 Swashplate design, variable, nominal pressure 3600psi (250bar), maximum pressure 4550psi
(315bar)
● ● ● ● ● ● ● A10V
Operation mode
02 Pump, open circuit
O
Size (NG)
03 Geometric displacement, see table of values on page 10
18 28 45 63 72 85 100
Control devices
04 Pressure control hydraulic
● ● ● ● ● ● ● DR
X-T open
●
– –
● ● ● ● DRF
X-T plugged with flushing function
●
– –
● ● ● ● DRS
without flushing function
● ● ● ● ● ● ● DRSC
with pressure cut-off hydraulic remotely operated
● ● ● ● ● ● ● DRG
electric negative control U = 12 V
● ● ● ● ● ● ● ED71
U = 24 V
● ● ● ● ● ● ● ED72
electric positive control U = 12 V
● ● ● ● ● ● ● ER71
U = 24 V
● ● ● ● ● ● ● ER72
Differential pressure control electric control (negative control)
○ ○ ○ ○ ○ ● ● EF.
1)
Power control with pres-
sure cut-off
hydraulic start of control from 145 to 510psi
(10 to 35bar)
● ● ● ● ● ● ● LA5D
520 to 1015
(36 to 70bar)
● ● ● ● ● ● ● LA6D
1030 to 1520psi
(71 to 105bar)
● ● ● ● ● ● ● LA7D
1535 to 2030psi
(106 to 140bar)
● ● ● ● ● ● ● LA8D
2045 to 3335psi
(141 to 230bar)
● ● ● ● ● ● ● LA9D
remotely operated hydraulic start of control see LA.D
● ● ● ● ● ● ● LA.DG
flow control, X-T
plugged
hydraulic start of control see LA.D
● ● ● ● ● ● ● LA.DS
electrically
overridable
(negative
control)
start of control see LA.D
● ● ● ● ● ● ● LA.S
Note
▶ Observe the engineering notes regarding each
control device
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Ordering code series 53
5
18 28 45 63 72 85 100
04 Electro-proportional control positive control
with pressure control U = 12 V
● ● ● ● ● ● ● EP1D
U = 24 V
● ● ● ● ● ● ● EP2D
with pressure and flow control
(load sensing)
X-T open U = 12 V
● ● ● ● ● ● ● EP1DF
U = 24 V
● ● ● ● ● ● ● EP2DF
with pressure and flow control
(load sensing)
X-T plugged U = 12 V
● ● ● ● ● ● ● EP1DS
U = 24 V
● ● ● ● ● ● ● EP2DS
with electro-hydraulic pressure
control
U = 12 V
● ● ● ● ● ● ● EP1ED
U = 24 V
● ● ● ● ● ● ● EP2ED
Electro-proportional control positive control
with pressure control U = 12 V
● ● ● ● ● ● ● EK1D
U = 24 V
● ● ● ● ● ● ● EK2D
Pressure and flow control with controller cut-
off (load sensing)
X-T open U = 12 V
● ● ● ● ● ● ● EK1DF
U = 24 V
● ● ● ● ● ● ● EK2DF
Pressure and flow control with controller cut-
off (load sensing)
X-T plugged U = 12 V
● ● ● ● ● ● ● EK1DS
U = 24 V
● ● ● ● ● ● ● EK2DS
Electro-hydraulic pressure control with
controller cut-off
U = 12 V
● ● ● ● ● ● ● EK1ED
U = 24 V
● ● ● ● ● ● ● EK2ED
Series
05 Series 5, index 3
53
Direction of rotation
06 View on drive shaft clockwise
R
counter clockwise
L
Sealing material
07 FKM (fluor-caoutchouc)
V
Drive shaft
08 Splined shaft standard shaft
● ● ● ● ● ● ● S
ANSI B92.1a similar to shaft “S” however for higher input torque
● ● ● ● ● ●
–
R
reduced diameter, limited suitability for through drive
● ● ● ● ● ● ● U
similar to shaft “U”, however for higher torque
–
● ● ● ● ● ● W
Parallel keyed shaft ISO 3019-1 limited suitability for through drive
● ● ● ● ● ● ● K
Mounting flange
09 ISO 3019-1 (SAE) 2-hole
● ● ● ● ● ● ● C
4-hole
– – –
● ● ● ● D
Note
▶ Note the project planning notes on page68.
▶ In addition to the ordering code, please specify the
relevant technical data when placing your order.
01 02 03 04 05 06 07 08 09 10 11 12
A10V(S) O / 53 – V
Bosch Rexroth AG, RE-A 92703/12.2016
6 A10VO series 52 and 53 | Axial piston variable pump
Ordering code series 53
01 02 03 04 05 06 07 08 09 10 11 12
A10V(S) O / 53 – V
2) According to ANSI B92.1a
Working port 18 28 45 63 72 85 100
10 SAE flange port
UNC fastening thread
rear not for through drive
● ● ● ● ● ● ● 61
at side, opposite for through drive
● ● ● ● ● ● ● 62
Through drive (for attachment options, see page 62)
11 Flange ISO 3019-1 Hub for splined shaft
2)
Diameter Diameter
18 28 45 63 72 85 100
without through drive ● ● ● ● ● ● ●
N00
82-2 (A) 5/8 in 9T 16/32DP ● ● ● ● ● ● ●
K01
3/4 in 11T 16/32DP ● ● ● ● ● ● ●
K52
101-2 (B) 7/8 in 13T 16/32DP
–
● ● ● ● ● ●
K68
1 in 15T 16/32DP
– –
● ● ● ● ●
K04
127-4 (C) 1 1/4 in 14T 12/24DP
– – –
● ● ● ●
K15
1 1/2 in 17T 12/24DP
– – – – –
● ●
K16
127-2 (C) 1 1/4 in 14T12/24DP
– – – – –
● ●
K07
1 1/2 in 17T 12/24DP
– – – –
● ●
K24
Connector for solenoids
12 Without connector (without solenoid, with hydraulic control only, without code)
● ● ● ● ● ● ●
DEUTSCH – molded connector, 2-pin – without suppressor diode (for electric controls)
● ● ● ● ● ● ● P
●
= Available
○
= On request – = Not available
Note
▶ Note the project planning notes on page68.
▶ In addition to the ordering code, please specify the
relevant technical data when placing your order.
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Hydraulic fluids
7
Hydraulic fluids
The A10VO variable pump is designed for operation with
HLP mineral oil according to DIN 51524.
Application instructions and requirements for hydraulic
fluids should be taken from the following data sheets
before the start of project planning:
▶ 90220: Hydraulic fluids based on mineral oils and
related hydrocarbons
▶ 90221: Environmentally acceptable hydraulic fluids
Notes on selection of hydraulic fluid
The hydraulic fluid should be selected such that the operat-
ing viscosity in the operating temperature range is within
the optimum range (ν
opt
see selection diagram).
Note
At no point of the component may the temperature be
higher than 239 °F (115°C). The temperature difference
specified in the table is to be taken into account when
determining the viscosity in the bearing.
If the above conditions cannot be maintained due to
extreme operating parameters, please contact the respon-
sible member of staff at Bosch Rexroth.
Viscosity and temperature of hydraulic fluids
Viscosity Temperature Comment
Cold start
ν
max
≤7500SUS
(1600 mm
2
/s)
θ
St
≥-40 °F (-40 °C) t≤1 min, without load (p≤435psi (30bar)), n≤1000rpm
Permissible temperature difference
ΔT≤45°F (25K)
between axial piston unit and hydraulic fluid
Warm-up phase
ν<7500 to 1850SUS
(1600 to 400 mm
2
/s)
θ=-40°F to -13°F
(-40 °C to -25 °C)
Note the detailed information on operation with low tempera-
tures, see data sheet 90300-03-B.
Continuous operation
ν=1850 to 60SUS
(400 to 10 mm
2
/s)
This corresponds, for example on the VG46, to a temperature
range of 41°F (+5 °C) to 185°F (+85 °C) (see selection dia-
gram page5)
θ=-13°F to +230°F
(-25°C to +110°C)
measured at port L
Note the permissible temperature range of the shaft seal
(ΔT=approx.9°F (5K) between the bearing/shaft seal and
port L)
ν
opt
=170 to 80SUS
(36 to 16 mm
2
/s)
Range of optimum operating viscosity and efficiency
Short-term operation
ν
min
≥49SUS (7 mm
2
/s) t<1 min, p<0.3•p
nom
▼ Selection diagram
Range of optimum operating viscosity v
opt
Optimum efficiency
Maximum permissible viscosity for cold start
Minimum permissible viscosity for short-term operation
Temperature θ [°C]
Viscosity ν [mm
2
/s]
Continuous operation
Warm-up phase
Minimum permissible temperature for cold start
-40 -13 -14 50 86 122 194 239158
32
-40 -25 -10 10 30 50 90 115
[°F]
[°C]70
0
7
10
40
60
20
100
200
400
600
1000
1600
VG 22
VG 32
VG 46
VG 68
VG 100
16
36
20
60
200
300
100
500
1000
2000
3000
4600
1600
[mm
2
/s] [SUS]
74
170
Bosch Rexroth AG, RE-A 92703/12.2016
8 A10VO series 52 and 53 | Axial piston variable pump
Hydraulic fluids
Filtration of the hydraulic fluid
Finer filtration improves the cleanliness level of the hydraulic
fluid, 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 very high hydraulic fluid temperatures (194°F (90 °C) to
maximum 239°F (115 °C)), cleanliness level 19/17/14
according to at least ISO 4406 is necessary.
Please contact us if the above classes cannot be observed.
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Operating pressure range
9
Operating pressure range
Pressure at working port B Definition
Nominal pressure p
nom
3600psi (250bar) absolute The nominal pressure corresponds to the maximum design pressure.
Maximum pressure p
max
4550psi (315bar) absolute The maximum pressure corresponds the maximum operating pressure
within the single operating period. The sum of the single operating
periods must not exceed the total operating period.
Single operating period 2.5ms
Total operating period 300 h
Minimum pressure p
B
abs
(high pressure side)
145psi (10bar) absolute Minimum pressure on the high-pressure side (B) which is required in or-
der to prevent damage to the axial piston unit.
Rate of pressure change R
Amax
232000psi/s (16000bar/s) Maximum permissible rate of pressure build-up and pressure reduction
during a pressure change over the entire pressure range.
Pressure at suction port S (Inlet)
Minimum pressure p
Smin
Standard
12psi (0.8bar) absolute Minimum pressure at suction port S (inlet) that is required in order to
avoid damage to the axial piston unit. The minimum pressure depends on
the speed and displacement of the axial piston unit.
Maximum pressure p
Smax
75psi (5bar) absolute
Case drain pressure at port L
1
, L
2
Maximum pressure p
Lmax
30psi (2bar) absolute Maximum 7.5psi (0.5bar) higher than inlet pressure at port S, but not
higher than p
Lmax
. A case drain line to the reservoir is required.
▼ Rate of pressure change R
Amax
p
nom
∆t
∆p
Time t
Pressure p
▼ Maximum permissible speed (limit speed)
Permissible speed by increasing inlet pressure
p
abs
at suction opening S or at V
g
≤ V
gmax
1.0
0.9
0.8
0.7
1.2
1.1
1.0
0.9
24
20
17
15
13
12
(1.6)
(1.4)
(1.2)
(1.0)
(0.9)
(0.8)
Displacement V
g
/V
gmax
Speed n/n
max
Inlet pressure p
abs
psi (bar)
▼ Pressure definition
Pressure p
t
1
t
2
t
n
Single operating period
Minimum pressure (high-pressure side)
Maximum pressure p
max
Nominal pressure p
nom
Time t
Total operating period = t
1
+ t
2
+ ... + t
n
Note
Operating pressure range valid when using hydraulic
fluids based on mineral oils. Please contact us for values
for other hydraulic fluids.
Bosch Rexroth AG, RE-A 92703/12.2016
10 A10VO series 52 and 53 | Axial piston variable pump
Technical data
Technical data
Size NG 10
1)
18
2)
28 45 60
1)
63
2)
72
2)
85 100
2)
Displacement, geometric, per
revolution
V
g max
in
3
(cm
3
)
0.64
(10.5)
1.10
(18)
1.75
(28)
2.75
(45)
3.66
(60)
3.84
(63)
4.39
(72)
5.18
(85)
6.10
(100)
Maximum
rotational
speed
3)
at V
g max
n
nom
rpm 3600 3300 3000 2600
4)
2700 2600 2600 2500 2300
at V
g
<V
g max
n
max
perm
rpm 4320 3960 3600 3120 3140 3140 3140 3000 2500
Flow
at n
nom
and V
g
max
q
v
gpm
(l/min)
9.7
(37)
15.6
(59)
22
(84)
31
(117)
42
(162)
43
(163)
49.4
(187)
55
(212)
60
(230)
at n
E
= 1500
rpm q
vE
gpm
(l/min)
4
(15)
7.1
(27)
1.1
(42)
18
(68)
24
(90)
25.1
(95)
28.5
(108)
34
(128)
39
(150)
Power
at n
nom
, V
g max
and Δp
=3600psi
(250bar)
P
HP
(kW)
22
(16)
34
(25)
47
(35)
65
(49)
88
(65)
90
(68)
103
(77)
119
(89)
130
(96)
at n
E
= 1500 rpm P
E
HP
(kW)
9.4
(7)
15
(11)
24
(18)
38
(28)
50
(37)
52
(39)
60
(45)
71
(53)
84
(62)
Torque
at V
g max
and
Δp = 3600psi
(250bar)
T
lb-ft
(Nm)
31
(42)
52
(71)
82
(111)
132
(179)
175
(238)
184
(250)
211
(286)
247
(338)
293
(398)
at V
g max
and
Δp = 1440psi
(100bar)
T
lb-ft
(Nm)
13
(17)
21
(29)
33
(45)
53
(72)
70
(95)
74
(100)
84
(114)
102
(135)
117
(159)
Rotary
stiffness
of drive
shaft
S
c
lb-ft/rad
(Nm/rad)
6760
(9200)
8082
(11000)
16400
(22300)
27560
(37500)
48100
(65500)
48100
(65500)
48100
(65500)
105100
(143000)
105100
(143000)
R
c
lb-ft/rad
(Nm/rad)
–
(–)
10870
(14800)
19400
(26300)
30240
(41000)
51200
(69400)
51200
(69400)
51200
(69400)
112773
(152900)
–
(–)
U
c
lb-ft/rad
(Nm/rad)
5020
(6800)
5870
(8000)
12317
(16700)
22130
(30000)
36290
(49200)
36290
(49200)
36290
(49200)
75900
(102900)
75900
(102900)
W
c
lb-ft/rad
(Nm/rad)
–
(–)
–
(–)
14678
(19900)
25370
(34400)
39830
(54000)
39830
(54000)
39830
(54000)
86960
(117900)
86960
(117900)
K
c
lb-ft/rad
(Nm/rad)
7965
(10800)
9810
(13300)
19770
(26800)
32380
(43900)
54506
(73900)
54506
(73900)
54506
(73900)
120518
(163400)
120518
(163400)
C
c
lb-ft/rad
(Nm/rad)
–
(–)
–
(–)
6) 6) 6)
–
(–)
–
(–)
6)
–
(–)
Moment of inertia for rotary
group
J
TW
lbs-ft
2
(kgm
2
)
0.0142
(0.0006)
0.2207
(0.0009)
0.0403
(0.0017)
0.0783
(0.003)
0.1329
(0.0056)
0.1329
(0.0056)
0.1329
(0.0056)
0.2848
(0.012)
0.2848
(0.012)
Maximum angular accelera-
tion
5)
α
rad/s² 8000 6800 5500 4000 3300 3300 3300 2700 2700
Case vol-
ume
V
gal
(L)
0.05
(0.2)
0.06
(0.25)
0.08
(0.3)
0.13
(0.5)
0.21
(0.8)
0.21
(0.8)
0.21
(0.8)
0.26
(1)
0.26
(1)
Weight without through drive
(approx.)
m
lbs
(kg)
17
(8)
25
(11.5)
33
(15)
40
(18)
48.5
(22)
48.5
(22)
48.5
(22)
79
(36)
79
(36)
Weight with through drive
(approx.)
lbs
(kg)
–
(–)
28.6
(13)
40
(18)
53
(24)
62
(28)
62
(28)
62
(28)
99
(45)
99
(45)
1) Only series 52
2) Only series 53
3) The values are applicable:
‒ At absolute pressure p
abs
= 15psi (1bar) at suction port S
‒ For the optimal viscosity range of
ν
opt
=170 to 80SUS (36 to 16 mm
2
/s)
‒ For hydraulic fluid based on mineral oils
4) Please contact us regarding higher speeds
5) The scope of application lies between the minimum necessary and
the maximum permissible drive speeds. It applies for external stim-
uli (e. g. engine 2 to 8 times rotary frequency, cardan shaft twice
the rotary frequency). The limiting value is only valid for a single
pump. The loading capacity of the connecting parts must be taken
into account.
6) On request
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Technical data
11
Determining the operating characteristics
Flow
q
v
=
V
g
× n × η
v
[gpm
(l/min)]
231 (1000)
Torque
T
=
V
g
× Δp
[lb-ft
(Nm)]
24 (20) × π × η
mh
Power
P
=
2 π × T × n
=
q
v
× Δp
[HP
(kW)]
33000 (60000)
1714 (600) × η
t
Key
V
g
= Displacement per revolution [in
3
(cm
3
)]
Δp
= Differential pressure [psi (bar)]
n
= Rotational speed [rpm]
η
v
= Volumetric efficiency
η
mh
= Mechanical-hydraulic efficiency
η
t
=
Total efficiency (η
t
= η
v
× η
mh
)
Note
▶ Theoretical values, without efficiency 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 recommend testing the
loads by means of experiment or calculation / simula-
tion and comparison with the permissible values.
Bosch Rexroth AG, RE-A 92703/12.2016
12 A10VO series 52 and 53 | Axial piston variable pump
Technical data
Permissible radial and axial forces on the drive shaft
Size NG 10 18 28 45 60/63 72 85 100
Radial force maximum at a/2
Fq
a
a/2
a/2
± F
q max
lbf
(N)
56
(250)
78
(350)
270
(1200)
337
(1500)
382
(1700)
337
(1500)
450
(2000)
450
(2000)
Axial force maximum
± Fax
+ F
ax max
lbf
(N)
90
(400)
157
(700)
225
(1000)
337
(1500)
450
(2000)
337
(1500)
675
(3000)
675
(3000)
Note
▶ The values given are maximum values and do not apply
to continuous operation. For drives with radial loading
(pinion, V-belt drives), please contact us!
Permissible input and through-drive torques
Size 10 18 28 45 60/63 72 85 100
Torque at V
g max
and Δp = 3600psi (250bar)
1)
T
max
lbft
(Nm)
31
(42)
52
(71)
82
(111)
132
(179)
184
(250)
211
(286)
247
(338)
293
(398)
Input torque at drive shaft, maximum
2)
S
T
E max
lb-ft
(Nm)
93
(126)
91
(124)
146
(198)
235
(319)
464
(630)
464
(630)
853
(1157)
814
(1104)
DIA in 3/4 3/4 7/8 1 11/4 11/4 1 1/2 1 1/2
R
T
E max
lb-ft
(Nm)
–
(–)
118
(160)
184
(250)
295
(400)
479
(650)
479
(650)
895
(1215)
–
DIA in – 3/4 7/8 1 11/4 11/4 1 1/2 –
U
T
E max
lb-ft
(Nm)
44
(60)
43
(59)
77
(105)
139
(188)
226
(306)
226
(306)
463
(628)
438
(595)
DIA in 5/8 5/8 3/4 7/8 1 1 11/4 11/4
W
T
E max
lb-ft
(Nm)
–
(–)
–
(–)
103
(140)
162
(220)
292
(396)
282
(383)
479
(650)
469
(636)
DIA in – – 3/4 7/8 1 1 11/4 11/4
K
T
E max
lb-ft
(Nm)
78
(106)
76
(104)
107
(145)
156
(212)
325
(441)
325
(441)
553
(750)
553
(750)
DIA in 3/4 3/4 7/8 1.000 1 1/4 1 1/4 1 1/2 1 1/2
C
T
E max
lb-ft
(Nm)
–
(–)
–
(–)
107
(145)
156
(212)
325
(441)
–
(–)
553
(750)
–
(–)
Maximum through-drive torque
S
T
D max
lb-ft
(Nm)
–
(–)
80
(108)
118
(160)
235
(319)
357
(484)
357
(484)
515
(698)
573
(778)
R
T
D max
lb-ft
(Nm)
–
(–)
89
(120)
130
(176)
270
(365)
357
(484)
357
(484)
515
(698)
–
(–)
U
T
D max
lb-ft
(Nm)
–
(–)
43
(59)
77
(105)
139
(188)
226
(306)
226
(306)
463
(628)
438
(595)
W
T
D max
lb-ft
(Nm)
–
(–)
–
(–)
103
(140)
162
(220)
292
(396)
282
(383)
479
(650)
469
(636)
K
T
D max
lb-ft
(Nm)
–
(–)
76
(104)
107
(145)
156
(212)
325
(441)
325
(441)
–
(–)
553
(750)
1) Without considering efficiency
2) For drive shafts with no radial force
3) only size 60
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Technical data
13
▼ Distribution of torques
T
E
T
D
T
1
T
2
T
3
1
st
pump 2
nd
pump
Torque at 1st pump
T
1
Torque at 2nd pump
T
2
Torque at 3rd pump
T
3
Input torque
T
E
=
T
1
+ T
2
+ T
3
T
E
<
T
E max
Through-drive torque
T
D
=
T
2
+ T
3
T
D
<
T
D max
Bosch Rexroth AG, RE-A 92703/12.2016
14 A10VO series 52 and 53 | Axial piston variable pump
DR – Pressure control
DR – Pressure control
The pressure control limits the maximum pressure at the
pump outlet within the control range of the variable pump.
The variable pump only supplies as much hydraulic fluid as
is required by the consumers. If the operating pressure
exceeds the pressure setting at the pressure valve, the
pump will regulate to a smaller displacement to reduce the
control differential.
▶ Basic position in depressurized state:V
g max
.
▶ Setting range
1)
for pressure control 510 to 3600psi
(35 to 250bar). Standard is 3600psi (250bar).
▼ Characteristic curve DR
3600
q
v min
q
v max
250
[psi][bar]
Standby
2)
Operating pressure p
B
Flow q
V
Hysteresis/pressure rise Δp
max
Characteristic curve valid for n
1
= 1500 rpm
and t
fluid
= 120°F
(50 °C).
▼ Circuit diagram DR
SL
2
BL
1
L
Controller data
NG 10 18 28 45 60
63
72 85 100
Pressure
increase
Δp [psi]
[bar]
87
(6)
87
(6)
87
(6)
87
(6)
115
(8)
115
(8)
175
(12)
200
(14)
Hysteresis
and re-
peatability
Δp [psi
(bar)]
maximum 45 (3)
Control
fluid con-
sumption
gpm
(l/min)
maximum approx. 0.8 (3)
1) In order to prevent damage to the pump and the system, the per-
missible setting range must not be exceeded. The range of possi-
ble settings at the valve is higher.
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
DRG – Pressure control, remotely operated
15
DRG – Pressure control, remotely operated
For the remote-controlled pressure control, the LS pressure
limitation is performed using a separately arranged pres-
sure relief valve. Therefore any pressure control value under
the pressure set on the pressure controller can be regu-
lated. Pressure controller DR see page 14.
A pressure relief valve is externally piped to port X for
remote setting of pressure below the setting of the DR
control valve spool. This relief valve is not included in the
scope of delivery of the DRG control.
When there is differential pressure Δp at the control valve
and with the standard setting on the remote-controlled
pressure cut-off of 290 psi (20bar), the amount of control
fluid at the connection is X approx. 0.4 gpm (1.5l/min). If a
different setting (range from 145 to 320 psi (10 to 22bar))
is required, please state in plain text.
As a separate pressure relief valve (1) we recommend:
▶ a directly controlled, hydraulic or electric proportional
one, suitable for the control fluid mentioned above.
The max. length of piping should not exceed 6.6 ft (2m).
▶ Basic position in depressurized state:V
g max
.
▶ Setting range
1)
for pressure control 501 to 3600 psi(35
to 250bar) (3).
Standard is 3600 psi (250bar).
▶ Setting range for differential pressure 145 to 320 psi (10
to 22bar) (2)
Standard is 290 psi (20bar).
Unloading port X to the reservoir results in a zero stroke
(standby) pressure which is approx. 15 to 30 psi (1 to
2bar) higher than the defined differential pressure ∆p,
however system influences are not taken into account.
▼ Characteristic curve DRG
3600
q
v min
q
v max
250
[psi][bar]
Standby
2)
Operating pressure p
B
Flow q
V
Hysteresis/pressure rise Δp
max
Characteristic curve valid for n
1
= 1500 rpm
and t
fluid
= 120°F
(50 °C).
▼ Circuit diagram DRG
SL
2
BL
X
L
1
1
3
2
1 The separate pressure relief valve and the line are not
included in the scope of delivery.
2 Remote-controlled pressure cut-off (G).
3 Pressure controller (DR)
Controller data
NG 10 18 28 45 60
63
72 85 100
Pressure
increase
Δp [psi]
[bar]
87
(6)
87
(6)
87
(6)
87
(6)
115
(8)
115
(8)
175
(12)
200
(14)
Hysteresis
and re-
peatability
Δp [psi
(bar)]
maximum 45 (3)
Control
fluid con-
sumption
gpm
(l/min)
maximum approx. 1.2 (4.5)
1) In order to prevent damage to the pump and the system, the per-
missible setting range must not be exceeded. The range of possi-
ble settings at the valve is higher.
2) Zero stroke from pressure setting Δ p on controller (2)
Bosch Rexroth AG, RE-A 92703/12.2016
16 A10VO series 52 and 53 | Axial piston variable pump
DRF (DFR) / DRS (DFR1) / DRSC– Pressure and flow control
DRF (DFR) / DRS (DFR1) / DRSC– Pressure and flow control
In addition to the pressure controller function (see
page14), a variable orifice (e.g. directional valve) is used to
adjust the differential pressure upstream and downstream
of the orifice. This is used to control the pump flow. The
pump flow is equal to the actual hydraulic fluid quantity
required by the consumer. With all controller combinations,
the V
g
reduction has priority.
▶ Basic position in depressurized state:V
g max
.
▶ Setting range
1)
to 3600 psi (250bar).
▶ DR pressure controller data see page14
▼ Characteristic curve DRF (DFR) / DRS (DFR1) / DRSC
3600
q
v min
q
v max
250
[psi][bar]
Standby
2)
Operating pressure p
B
Flow q
V
Hysteresis/pressure rise Δp
max
▼ Characteristic curve at variable speed
q
V max
q
V min
n
0
n
max
Rotational speed n
Flow q
V
Hysteresis/Pressure increase Δq
V
max
Characteristic curves valid for n
1
= 1500 rpm
and t
fluid
= 120°F
(50 °C).
Possible connections at port B
(not included in the delivery contents)
LS mobile control blocks Data sheets
M4-12 64276
M4-15 64283
LUDV mobile control blocks
M6-15 64284
M7-22 64295
▼ Circuit diagram DRF (DFR)
S
L
2
BL
X
1
L
1
2
3
Plugged at DRS (DFR1) / DRSC valve
1 The metering orifice (control block) and the line is not
included in the delivery contents.
2 Pressure and flow controller (FR).
3 Pressure controller (DR)
Note
The DRS and (DFR1) and DRSC valve versions have no
pilot line between X and the reservoir.
Unloading the LS-pilot line must be possible in the
valve system.
Because of the flushing function sufficient unloading of
the flow control in DRS (DFR1) control valve X-line must
also be provided.
If this pilot line of the X line does not have to be guaran-
teed, the DRSC control valve must be used.
For further information see page17
1) In order to prevent damage to the pump and the system, the per-
missible setting range must not be exceeded. The range of possi-
ble settings at the valve is higher.
2) Zero stroke from differential pressure setting Δp on controller (2)
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
DRF (DFR) / DRS (DFR1) / DRSC– Pressure and flow control
17
Differential pressure ∆p:
▶ Standard setting: 200 psi (14bar)
If another setting is required, please state in clear text.
▶ Adjustment range: 200 to 320 psi (14 to 22bar)
Unloading port X to the reservoir results in a zero stroke
(standby) pressure which is approx. 15 to 30 psi (1 to
2bar) higher than the defined differential pressure ∆p,
however system influences are not taken into account.
Controller data
▶ DR pressure controller data see page 14.
▶ Maximum flow deviation measured at drive speed
n = 1500rpm.
NG 10 18 28 45 60
63
72 85 100
Flow deviation
Δq
vmax
[gpm (l/min)]
0.13 (0.5) 0.24 (0.9) 0.26 (1.0) 0.48 (1.8) 0.66 (2.5) 0.66 (2.5) 0.83 (3.1) 0.83 (3.1)
Hysteresis and
repeatability
Δp [psi (bar)]
maximum 45 (3)
Control fluid
consumption
gpm (gpm (l/min)) maximum approx. 0.8 to 1.2 (3 to 4.5) (DRF (DFR))
maximum approx. 0.8 (3) (DRS (DFR1) / DRSC)
Bosch Rexroth AG, RE-A 92703/12.2016
18 A10VO series 52 and 53 | Axial piston variable pump
LA... – Pressure, flow and power controller
LA... – Pressure, flow and power controller
Pressure control equipped as DR(G), see page14 (15).
Equipment of the flow control like DRS (DFR1), see
page 16.
In order to achieve a constant drive torque with varying
operating pressures, the swivel angle and with it the vol-
ume flow from the axial piston pump is varied so that the
product of flow and pressure remains constant. Flow con-
troller is possible below the power control curve. When
ordering please state the power characteristics to be set ex
works in clear text, e.g. 27 HP (20kW) at 1500 rpm.
Controller data
▶ Pressure controller DR see page 14.
▶ Pressure and flow controller DR see page 16.
▶ See data sheet 92709 for electric override LA.S
▶ Control fluid consumption max. approx. 1.45 gpm (5.5l/
min)
Start of control Torque T [lb-ft (Nm)] for nominal size Order
code
psi (bar) 18 28 45 63 72 85 100
145 to 510
(10 to 35)
2.80 – 8.92
(3.8 – 12.1)
4.4 – 14
(6 – 19)
7.4 – 22.1
(10 – 30)
11 – 32
(15 – 43)
12.5 – 36.3
(17 – 49.2)
15 – 42
(20 – 57)
18 – 49.5
(24 – 68)
LA5
520 to 1015
(36 to 70)
8.92 – 17.2
(12.2 – 23.3)
14 – 26.5
(19.1 – 36)
22.2 – 43.5
(30.1 – 59)
32 – 61
(43.1 – 83)
36.4 – 69.9
(49.3 – 94.9)
42 – 83
(57.1 – 112)
49.5 – 97.1
(68.1 – 132)
LA6
1030 to 1520
(71 to 105)
17.2 –24.9
(23.4 – 33.7)
26.6 – 38.4
(36.1 – 52)
43.6 – 62
(59.1 – 84)
61 – 88
(83.1 – 119)
70 – 100.3
(95.0 – 136.0)
83 – 118
(112.1 – 160)
97.1 – 139.4
(132.1 – 189)
LA7
1535 to 2030
(106 to 140)
24.9 –33.2
(33.8 – 45)
38.4 – 51.6
(52.1 – 70)
62 – 83
(84.1 – 112)
88 – 116
(119.1 – 157)
100.4 – 132.3
(136.1 – 179.4)
118 – 156
(160.1 – 212)
139.4 – 183.6
(189.1 – 249)
LA8
2045 to 3335
(141 – 230)
33.2 – 55.2
(45.1 – 74.8)
51.7 – 86.3
(70.1 – 117)
83 – 139
(112.1 – 189)
116 – 195
(157.1 – 264)
132.4 – 222.5
(179.5 – 301.7)
156 – 263
(212.1 – 357)
183.3 – 309
(249.1 – 419)
LA9
Conversion of the torque values in power [HP kW]
P=
T
[HP (kW)] (at 1500 rpm) or
P=
2 x T x n
[HP (kW)] (rotational speeds, see table on page 10)
3.5 (6.4) 33000 (60000)
▼ Characteristic curve LA.DS
01
00
0
725
1450
2200
2900
3600
4350
0
50
100
150
200
250
300
[psi][bar]
01
00
∆q
V
LA9
LA8
LA7
LA5
LA6
LA9
LA8
LA7
LA5
LA6
Volume flow q
V
[%]
Operating pressure p
B
Torque T [lb-ft (Nm)]
Volume flow q
V
[%]
▼ Circuit diagram LA.DS
(for further combination options with LA.. see page19)
SL
2
BL
XX
L
1
1
1 The metering orifice (control block) and the line is not
included in the delivery contents.
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
LA... – Variations
19
LA... – Variations
▼ Circuit diagram LA.D with pressure cut-off
SL
2
BL L
1
▼ Circuit diagram LA.DG with pressure cut-off, remotely operated
SL
2
BL L
1
1
X
X
1 The pressure relief valve and the line are not included in
the scope of delivery.
▼ Circuit diagram LA.S with separate flow control
SL
2
BL
X
L
1
1
1 The sensing orifice (control block) and the line is not
included in the delivery contents.
Controller data
▶ See data sheet 92709 for electric override LA.S
Bosch Rexroth AG, RE-A 92703/12.2016
20 A10VO series 52 and 53 | Axial piston variable pump
ED – Electro-hydraulic pressure control
ED – Electro-hydraulic pressure control
The ED valve is set to a certain pressure by a specified
variable solenoid current.
Changing the consumer (load pressure) causes an increase
or decrease in the pump swivel angle (flow) in order to
maintain the electrically set pressure level.
Thus the pump only delivers as much hydraulic fluid as the
consumers can take. The desired pressure level can be set
steplessly by varying the solenoid current.
As the solenoid current signal drops towards zero, the
pressure will be limited to p
max
by an adjustable hydraulic
pressure cut-off (secure fail safe function in case of a loss
of power, e.g. for fan drives). The response time character-
istic curve of the ED-control was optimized for the use as a
fan drive system. When ordering, specify the type of appli-
cation in clear text.
▼ Static current-pressure characteristic curve ED
(negative characteristic curve measured with pump in zero stroke)
3600
0
I/I
max
1
ED
2000
250
[psi][bar]
140
Amperage
Operating pressure p
B
De-activation
of control
Min. adjustable control pressure
Max. adjustable
control pressure
▶ Hysteresis static < 45 psi (3bar).
▼ Flow-pressure characteristic curve
3600
q
v min
q
v max
2000
250
[psi][bar]
140
Maximum operating
pressure p
B
(de-energized)
Setting range
Flow q
V
]
Hysteresis/pressure rise
Δp
max
< 60psi (4bar)
▶ Characteristic curves valid for n
1
= 1500 rpm and
t
fluid
= 120 °F (50 °C).
▶ Control fluid consumption: 0.8 to 1.2 gpm (3 to 4.5 l/min).
▶ For standby standard setting, see the following diagram,
other values on request.
▼ Influence of the pressure setting on standby
(maximally energized)
435
405
500
465
375
350
320
290
260
230
200
30
28
34
[psi][bar]
32
26
24
22
20
18
16
14
2050 2300 2600 2900 3200 3500
3600
140 160 180 200 220 240
250
[psi]
[bar]
Maximum pressure setting
Standby
▼ Circuit diagram ED71/ED72
S
L
2
BL
X
L
1
Technical data, solenoid ED71 ED72
Voltage 12 V (±20%) 24 V (±20%)
Control current
Start of control at p
max
100 mA 50 mA
End of control at p
min
1200 mA 600 mA
Limiting current 1.54 A 0.77 A
Nominal resistance (at 68 °F (20 °C)) 5.5 Ω 22.7 Ω
Dither frequency 100 to
200 Hz
100 to
200 Hz
Duty cycle 100% 100%
Type of protection: see connector version page 67
Operating temperature range at valve -4 °F to 239 °F (-20°C to +115°C)
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
ER – Electro-hydraulic pressure control
21
ER – Electro-hydraulic pressure control
The ER valve is set to a certain pressure by a specified
variable solenoid current.
Changing the consumer (load pressure) causes an increase
or decrease in the pump swivel angle (flow) in order to
maintain the electrically set pressure level.
Thus the pump only delivers as much hydraulic fluid as the
consumers can take. The desired pressure level can be set
steplessly by varying the solenoid current.
As the solenoid current signal drops towards zero, the
pressure will be limited to pmin (stand by).
Observe project planning notes.
▼ Static current-pressure characteristic curve ER
(positive characteristic curve measured with pump in zero stroke)
01
0
725
200
2200
3600
5100
0
50
14
150
250
350
[psi][bar]
Current I/I
max
Maximum adjustable
control pressure
Minimum ad-
justable control
pressure
Operating pressure p
B
▶ Hysteresis static current-pressure characteristic
curve < 3bar.
▼ Flow-pressure characteristic curve
3600
q
v min
q
v max
2000
250
[psi][bar]
140
Maximum operating pressure p
B
(fully energized)
Setting range
Flow q
V
Hysteresis/pressure rise Δp
max
< 4bar
▶ Characteristic curves valid for n
1
= 1500 rpm and
t
fluid
= 120 °F (50 °C).
▶ Control fluid consumption: 0.8 to 1.2 gpm (3 to 4.5 l/min).
▶ Standby standard 200 psi (14bar). Other values on
request.
▶ Influence of pressure setting on stand-by ±30 psi (±2bar).
▼ Circuit diagram ER71/ER72
S
L
2
BL
X
L
1
Technical data, solenoid ER71 ER72
Voltage 12 V (±20%) 24 V (±20%)
Control current
Start of control at p
min
100 mA 50 mA
End of control at p
max
1200 mA 600 mA
Limiting current 1.54 A 0.77 A
Nominal resistance (at 68 °F (20 °C)) 5.5 Ω 22.7 Ω
Dither frequency 100 to
200 Hz
100 to
200 Hz
Duty cycle 100% 100%
Type of protection: see connector version page 67
Operating temperature range at valve -4 °F to 239 °F (-20°C to
+115°C)
Project planning note!
Excessive current levels (I > 1200 mA at 12 V or I > 600 mA
at 24 V) to the ER solenoid can result in undesired pres-
sure increases which can lead to pump or system damage.
Therefore:
▶ Use I
max
current limiter solenoids.
▶ A sandwich plate pressure reducing valve can be
used to protect the pump in the event of overflow.
An accessory kit with intermediate plate pressure con-
troller can be ordered from Bosch Rexroth under part
numberR902490825.
Bosch Rexroth AG, RE-A 92703/12.2016
22 A10VO series 52 and 53 | Axial piston variable pump
EP – Electro-proportional control
EP – Electro-proportional control
Electro-proportional control makes a stepless and repro-
ducible setting of the pump displacement possible directly
via the swashplate. The control force of the control piston
is applied by a proportional solenoid. The control is propor-
tional to the current (for start of control, see table right).
In a depressurized state, the pump is swiveled to its initial
position (V
g max
) by an adjusting spring. If the operating
pressure exceeds a limit value of approx. 60 psi (4bar), the
pump starts to swivel from V
g max
to V
g min
without control
by the solenoid (control current < start of control). With a
minimum swivel angle V
gmin
and de-energized EP solenoids,
a minimum pressure of 145 psi (10bar) must be main-
tained, or alternatively a minimum amount of 5% of the
displacement.
A PWM signal is used to control the solenoid.
EP.D: The pressure control regulates the pump displacement
back to V
g min
after the set target pressure has been reached.
A minimum operating pressure of 200 psi (14bar) is
needed for safe and reproducible control. The necessary
control fluid is taken from the high pressure.
▼ Characteristic curve EP1/2
0 1.00.5
200
400
V
g min
V
g max
600
800
1000
1200
1400
EP1
EP2
Displacement [%]
minimum working
stroke of dither
ΔI, independent of
the mean value
Control current I [mA]
▶ Hysteresis static current-displacement characteristic
curve < 5%.
▼ Circuit diagram EP.D
S
L
2
BL L
1
Technical data, solenoid EP1 EP2
Voltage 12 V (±20%) 24 V (±20%)
Control current
Start of control at V
g min
400 mA 200 mA
End of control at V
g max
1200 mA 600 mA
Minimum working stroke of the
dither within the control range
1)
352mA 176mA
Dither frequency 100 to
200 Hz
100 to
200 Hz
Limiting current 1.54 A 0.77 A
Nominal resistance (at 68 °F (20 °C)) 5.5 Ω 22.7 Ω
Duty cycle 100% 100%
Type of protection: see connector version page 67
Operating temperature range at valve -4°F to 239°F (-20°C to
+115°C)
Note
We recommend the valve with flushing function for the
EP.D control variant. Please contact us.
1) ΔI = 44% of the current difference within the control range, regard-
less of the mean value of the current
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
EK – Electro-proportional control with controller cut-off
23
EK – Electro-proportional control with controller cut-off
Variant EK... is based completely on the variant EP... (see
page22).
In addition to the electro-proportional control function, a
controller cut-off is integrated in the electric characteristic
curve. The pump then swivels to V
g max
if the pilot signal is
lost (e.g., cable break) and then works with the DRF set-
tings if necessary (see page 16). The controller cut-off is
only intended for short-term use and not for permanent use
if the control signal is lost. If the control signal is lost, the
pump swivel times are increased by the EK valve.
A PWM signal is used to control the solenoid.
Note
A minimum operating pressure of 725 psi (50bar) is
needed for safe and reproducible electro-proportional
control with controller cut-off. For lower pressures, a pilot
signal of > 500mA (EK2) or > 1000mA (EK1) is required
in order to avoid undesired controller cut-off. The neces-
sary control fluid is taken from the high pressure.
In the V
g max
the spring force of the return spring is maxi-
mum. To overcome the force of this spring, the solenoid
must be subjected to excessive current (I
res
).
▼ Characteristic EK1/2
0 1.00.5
200
400
600
800
1000
1200
1400
I
res
I
res
I
off
I
min
I
min
I
off
EK1
EK2
Displacement [%]
Control current I [mA]
minimum working
stroke of dither
ΔI, independent of
the mean value
▶ Hysteresis static current-displacement characteristic
curve < 5%.
▶ For changes in current, ramp times of > 200ms must
be observed.
▼ Circuit diagram EK.D
S
L
2
BL L
1
Technical data, solenoid EK1 EK2
Voltage 12 V (±20%) 24 V (±20%)
Control current
Start of control at V
g min
400 mA 200 mA
End of control at V
g max
1200 mA 600 mA
Minimum working stroke of the
dither within the control range
1)
352mA 176mA
Dither frequency 100 to
200 Hz
100 to
200 Hz
Limiting current 1.54 A 0.77 A
Nominal resistance (at 68°F (20 °C)) 5.5 Ω 22.7 Ω
Duty cycle 100% 100%
Type of protection: see connector version page 64
Operating temperature range at valve -4°F to 239°F (-20 °C to
+115 °C)
EK1 EK2
I
min
[mA] 400 200
I
max
[mA] 1200 600
I
off
[mA] <300 <150
I
res
[mA] >1200 >600
Note
We recommend the valve with flushing function for the
EK.D control variant. Please contact us.
1) ΔI = 44% of the current difference within the control range, regard-
less of the mean value of the current
Bosch Rexroth AG, RE-A 92703/12.2016
24 A10VO series 52 and 53 | Axial piston variable pump
EP(K).DF / EP(K).DS / EP(K) – with pressure and flow control
EP(K).DF / EP(K).DS / EP(K) – with pressure and flow control
A hydraulic pressure flow control is superimposed on the
electro-proportional control.
The pressure control regulates the pump displacement
infinitely varied back to V
g min
after the set target pressure
has been reached.
This function is super-imposed on the EP or EK control, i.e.
the control-current dependent EP or EK function is exe-
cuted below the target pressure.
For the adjustment range of the pressure flow control, see
page 14 to 16.
With all controller combinations, the V
g
reduction has priority.
With flow control, the pump flow can be influenced in
addition to pressure control. The pump flow is thus equal
to the actual amount of hydraulic fluid required by the
consumer. This is achieved using the differential pressure at
the consumer (e.g. orifice).
The EP.DS or EK.DS version has no connection between X
and the reservoir (load sensing). Please refer to the notes
on page 16.
▼ Circuit diagram EP.D
S
L
2
BL L
1
1 The sensing orifice (control block) and the line is not
included in the delivery contents.
▼ Circuit diagram EP.DF
S
L
2
BL L
1
X
1
▼ Circuit diagram EP.DS
S
L
2
BL L
1
X
1
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
EP.ED / EK.ED – with electro-hydraulic pressure control
25
EP.ED / EK.ED – with electro-hydraulic pressure control
The ED valve is set to a certain pressure by a specified
variable solenoid current.
When changing the consumer (load pressure), this causes
an increase or decrease in the pump swivel angle (flow) in
order to maintain the electrically set pressure level.
The pump thus only delivers as much hydraulic fluid as the
consumers can take. The pressure can be set steplessly by
the solenoid current.
As the solenoid current signal drops towards zero, the
pressure will be limited to p
max
by an adjustable hydraulic
pressure cut-off (negative characteristic curve, e.g. for fan
drives ). A PWM signal is used to control the solenoid.
For further information and technical data of the solenoids
for ED(ER) control please refer to pages20 to23.
▼ Circuit diagram EP.ED
S
L
2
BL L
1
X
▼ Circuit diagram EK.ED
S
L
2
BL L
1
X
Bosch Rexroth AG, RE-A 92703/12.2016
26 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 10
Dimensions [in (mm)]
Dimensions size 10
DR – Pressure controller; mounting flange C version SAE; series 52
View Y
Valve mounting for
clockwise rotation
View
Y
Valve mounting for
counter-clockwise rotation
7.09 (180)
5.83 (148)
0.94
(24)
L1
45°
2.87 (73)
L
BS
2.11 (53.5)
0.43
(11)
4.19 (106.4)
5.28 (134)
4
5°
0.35
(9)
2.20 (56)
2.20 (56)
2.00 (51)
1.13
(28.6)
2.00 (51)
1.13
(28.6)
2.00 (51)
1.13
(28.6)
2.00 (51)
1.13
(28.6)
S
B
max. 4.33 (110)
Y
(ø 82.55 )
3.250
3.248
DIA
-0.054
0
0.43 (11)
0.25 (6.4)
Flange
ISO 3019-1
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 10
27
Dimensions [in (mm)]
▼ Splined shaft 3/4 in (SAE J744) ▼ Splined shaft 5/8 in (SAE J744)
S ‒ 11T 16/32DP
1)
U ‒ 9T 16/32DP
1)
1.50 (38)
0.55 (14)
0.20 (5)
1.18 (30)
0.83 (21)
1/4-20UNC-2B
2) 4)
0.87 (ø
22)
1.25 (31.8)
0.87 (ø22)
0.62
(15.8)
0.94 (23.8)
▼ Parallel keyed shaft DIN 6885
K ‒ 19-1
(ø19.05 )
0.750
0.749
DIA
(21.1 )
0.833
0.827
1.61 (41)
0.01
(2.5)
1.13 (28.6)
1.30 (33)
0.188
0.187
(4.76
+0.025
)
-0.004
+0.009
0.87 (Ø22)
-0.1
+0.05
Ports Standard Size
4)
p
max abs
[psi (bar)]
5)
State
8)
B Working port ISO 11926 1 1/16-12UNF-2B; 0.79 (20) deep 4550 (315) O
S Suction port ISO 11926 1 1/16-12UNF-2B; 0.79 (20) deep 75 (5) O
L Drain port ISO 11926
6)
9/16-18UNF-2B; 0.39 (10) deep 30 (2) O
7)
L
1
Drain port ISO 11926
6)
9/16-18UNF-2B; 0.39 (10) deep 30 (2) X
7)
X without adapter Control pressure ISO 11926 7/16-20UNF-2B; 0.45 (11.5) deep 4550 (315) O
Centering
3)
R3 0.59 × 0.26
DIN 332
1) Involute spline according to ANSIB92.1a, 30° pressure angle, flat
root, side fit, tolerance class5
2) Thread according to ASME B1.1
3) Coupling axially secured, e.g. with a clamp coupling or radially
mounted clamping screw
4) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
5) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
6) The spot face can be deeper than as specified in the standard.
7) Depending on the installation position, L or L
1
must be connected
(also see installation instructions starting on page 68).
8) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
Centering
3)
R3 0.59 × 0.26
DIN 332
Key width
Bosch Rexroth AG, RE-A 92703/12.2016
28 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 10
Dimensions [in (mm)]
▼ DRG – Pressure control, remotely operated (SAE)
1)
▼ DFR/DFR1 – Pressure, flow control (SAE)
1)
7.05 (179)
L
1
X
4.02 (102)
3.74 (95)
5.75 (146)
1.57
(40)
X
L
7.05 (179)
L
1
X
4.02 (102)
3.74 (95)
5.75 (146)
1.57
(40)
X
L
1) Valve mounting for clockwise or counter-clockwise rotation see
page 26
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 18
29
Dimensions [in (mm)]
Dimensions size 18
DR – Hydraulic pressure controller, clockwise rotation, series 53
1.30
(33)
1.26
(32)
DIA 1.26
(Ø32)
2.31 (58.7)
1.87
(47.6)
0.87 (22.2)
1.19
(30.2)
0.09 (2.5)
45°
45°
0.43 (11)
4.19 (106.4)
5.35 (136)
2.48 (63)
2.83 (72)
4.80 (122)
0.96
(24.5)
0.31 (7.8)
0.39 (10)
3.27 (83)
6.14 (156)
max. 7.20 (183)
3.27 (83)
(Ø82.55 )
3.250
3.248
DIA
- 0.054
(Ø82.55 )
3.250
3.248
DIA
- 0.054
0
0
DIA 0.79 (Ø20)
S B
L
2.42 (61.5)
L
L
1
X
DIA 1.26
(Ø32)
2.31 (58.7)
6.70 (170)
5.63 (143)
S
Y
2.22 (56.5)
2.22 (56.5)
DIA 0.79 (Ø20)
1.87 (47.6)
0.87
(22.2)
B
Z
0.96 (24.5)
0.31 (7.8)
0.39 (10)
3.27 (83)
L
L
1
L
1
L
2
2.42 (61.5)
1.19 (30.2)
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
View X
1)
View Y
1)
Detail Z
Flange
ISO 3019-1
Flange
ISO 3019-1
▼ Port plate 61
▼ Port plate 62
Bosch Rexroth AG, RE-A 92703/12.2016
30 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 18
Dimensions [in (mm)]
▼ Splined shaft 3/4 in (SAE J744) ▼ Splined shaft 3/4 in (SAE J744)
S ‒ 11T 16/32DP
1)
R ‒ 11T 16/32DP
1)2)
1.50 (38)
0.55 (14)
0.20 (5)
1.18 (30)
0.83 (21)
1/4-20UNC-2B
4) 5)
0.87 (Ø22)
1/4-20UNC-2B
4)5)
0.55 (14)
0.20 (5)
1.50 (38)
0.83 (21)
0.87
(Ø22)
▼ Splined shaft 5/8 in (SAE J744) ▼ Parallel keyed shaft DIN 6885
U ‒ 9T 16/32DP
1)
K ‒ 19-1
1.25 (31.8)
0.87 (ø22)
0.62
(15.8)
0.94
(23.8)
(ø19.05 )
0.750
0.749
DIA
(21.1 )
0.833
0.827
1.61 (41)
0.01
(2.5)
1.13 (28.6)
1.30 (33)
0.188
0.187
(4.76
+0.025
)
-0.004
+0.009
0.87 (Ø22)
-0.1
+0.05
Ports Standard Size
5)
p
max abs
[psi (bar)]
6)
State
10)
B Working port (Standard pressure series)
Fastening thread
SAE J518
ASME B1.1
3/4 in
3/8-16UNC-2B; 0.75 (19) deep
4550 (315) O
S Suction port (standard pressure series)
Fastening thread
SAE J518
ASME B1.1
1 1/4 in
7/16-14UNC-2B; 0.79 (20) deep
75 (5) O
L Drain port DIN 11926
7)
3/4-16UNF-2B; 0.47 (12) deep 30 (2) O
8)
L
1
,
L
2
9)
Drain port DIN 11926
7)
3/4-16UNF-2B; 0.47 (12) deep 30 (2) X
8)
X Control pressure DIN 11926 7/16-20UNF-2A; 0.45 (11.5) deep 4550 (315) O
Usable shaft
length
Key width
1) Involute spline according to ANSIB92.1a, 30° pressure angle, flat
root, side fit, tolerance class5
2) Splines according to ANSI B92.1a, run out of spline is a deviation
from standard.
3) Center bore according to DIN 332
4) Thread according to ASME B1.1
5) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
6) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
7) The spot face can be deeper than as specified in the standard.
8) Depending on the installation position, L, L
1
or L
2
must be con-
nected (also see installation instructions starting on page 68).
9) Only series 53
10) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
Centering
3)
R3 0.59 × 0.26
DIN 332
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 18
31
Dimensions [in (mm)]
▼ DRG – Pressure controller, remote controlled, series 53
▼ EP.D. / EK.D. – Electro-proportional control, series 53
4.45 (113)
4.17 (106)
2.44 (62)
4.80 (122)
max. 7.20 (183)
X
S
L
L
2
L
1
4.17 (106)
2.44 (62)
L
L
1
L
2
8.60 (218.5)
4.45 (113)
X
X
S
4.80 (122)
▼ DRF/DRS/DRSC – Pressure and flow control, series 53
▼ EP.ED. / EK.ED. – Electro-proportional control, series 53
4.45 (113)
4.17 (106)
2.44 (62)
4.80 (122)
max. 7.20 (183)
X
S
L
L
2
L
1
L
L
1
L
2
8.66 (220)
X
4.80 (122)
4.33 (110)
▼ LA.D. – Pressure, flow and power control, series 53
▼ ED7. / ER7. – Electro-proportional Pressure control, series 53
4.17 (106)
2.44 (62)
4.45 (113)
4.80 (122)
4.45 (113)
8.86 (225)
X
S
L
L
2
L
1
S
4.80 (122)
1)
8.42 (214)
L
L
1
L
2
1) ER7.: 6.18 inch (157 mm) if using an intermediate plate pressure
controller
Bosch Rexroth AG, RE-A 92703/12.2016
32 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 28
Dimensions [in (mm)]
Dimensions size 28
DR – Hydraulic pressure controller, clockwise rotation, series 52
2)
(ø101.6 )
4.000
3.998
DIA
-0.054
0
(ø101.6 )
4.000
3.998
DIA
-0.054
0
0.31 (7.9)
2.87 (73)
0.56 (14.3)
max. 8.25 (209.5)
1.06 (27)
6.69 (170)
0.25 (6.3)
0.47 (12)
3.54 (90)
4.86 (123.5)
5.75 (146)
6.77 (172)
45°
69
X
2.31 (58.7)
1.19 (30.2)
L
L
1
L
0.37 (9.5)
2.60 (66)
0.79 (ø20)
1.87
(47.6)
1.30
(33)
0.87 (22.2)
1.30
(33)
1.26 (ø32)
S
B
S
6.30 (160)
1.19 (30.2)
L
L
1
0.25 (6.3)
0.47 (12)
3.54 (90)
0.37 (9.5)
max. 8.25 (209.5)
1.26
(ø32)
Y
2.31 (58.7)
1.06 (27)
S
Z
B
2.60 (66)
2.60 (66)
0.87 (22.2)
1.87 (47.6)
0.79 (ø20)
B
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
2) Primary dimensions for pump apply to series 52 and 53
Ports see page34
Detail Z
View X
1)
View Y
1)
Flange
ISO 3019-1
Flange
ISO 3019-1
▼ Port plate 61
▼ Port plate 62
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 28
33
Dimensions [in (mm)]
▼ Splined shaft 7/8 in (SAE J744) ▼ Splined shaft 7/8 in (SAE J744)
S ‒ 13T 16/32DP
1)
R ‒ 13T 16/32DP
1)2)
1.61 (41)
0.63
(16)
0.20(5)
1.30 (33.1)
0.99
(25.1)
1/4-20UNC-2B
3) 4)
1/4-20UNC-2B
3)4)
0.63 (16)
1.61 (41)
0.98 (25)
0.20 (5)
▼ Splined shaft 3/4 in (SAE J744) ▼ Splined shaft 3/4 in (SAE J744)
U ‒ 11T 16/32DP
1)
W ‒ 11T 16/32DP
1)2)
1.50 (38)
0.55
(14)
0.20
(5)
1.18 (30)
0.87
(22)
1/4-20UNC-2B
3) 4)
1/4-20UNC-2B
3) 4)
0.55 (14)
1.50 (38)
0.83 (21)
0.20
(5)
▼ Parallel keyed shaft (ISO 3019-1) ▼ Tapered with woodruff key (ISO 3019-1)
K ‒ 22-1 C
0.9843
0.9764
DIA
(25 )
(ø22.225 )
0.8750
0.8742
1.63 (41.3)
0.63 (16)
1.31 (33.3)
0.251
0.250
(6.35
+0.25
)
-0.02
0.98 (Ø25)
-0.2
1/4-20UNC-2B
3) 4)
0.20
(5)
(3.2 )
-0.1
(6.35 )0.250
0.251
0.250
0.251
0.126
0.130
+0.025
(6.35 )
+0.025
A
B
2.19 (55.6)
0.16 (Ø4)
1.10
(28)
(3 )
0.110
0.118
0.75 (19)
125:1000
0.57 (14.4)
(Ø21.774 )
0.8575
0.8570
DIA
+0.006
-0.006
-0.2
5/8-18UNF-2A
1) 2)
Key width
1) Involute spline according to ANSIB92.1a, 30° pressure angle, flat
root, side fit, tolerance class5
2) Splines according to ANSI B92.1a, run out of spline is a deviation
from standard.
3) Thread according to ASME B1.1
4) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
Usable shaft length
Usable shaft length
Bosch Rexroth AG, RE-A 92703/12.2016
34 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 28
Dimensions [in (mm)]
Ports Standard Size
1)
p
max abs
[psi (bar)]
2)
State
6)
B Working port (Standard pressure series)
Fixingthread
SAE J518
ASME B1.1
3/4 in
3/8-16UNC-2B; 0.75 (19) deep
4550 (315) O
S Suction port (standard pressure series)
Fastening thread
SAE J518
ASME B1.1
1 1/4 in
7/16-14UNC-2B; 0.79 (20) deep
75 (5) O
L Drain port ISO 11926
3)
3/4-16UNF-2B; 12 deep 30 (2) O
4)
L
1
,
L
2
5)
Drain port ISO 11926
3)
3/4-16UNF-2B; 12 deep 30 (2) X
4)
X Control pressure ISO 11926 7/16-20UNF-2B; 11.5 deep 4550 (315) O
1) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
2) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
3) The spot face can be deeper than as specified in the standard.
4) Depending on the installation position, L, L
1
or L
2
must be con-
nected (also see installation instructions starting on page 68).
5) Only for series 53
6) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 28
35
Dimensions [in (mm)]
▼ DRG – Pressure controller, remote controlled, series 52 (53)
▼ EP.D. / EK.D. – Electro-proportional control, series 53
5.49 (139.5)
L
L
1
max. 8.25 (209.5)
S
2.48 (63)
L
4.86 (123.5)
X
4.21 (107)
4.49 (114)
2.48 (63)
L
L
1
L
2
8.82 (224)
5.51 (140)
X
X
S
5.12 (130)
▼ DFR/DFR1/DRSC – Pressure and flow control, series 52 (53)
▼ EP.ED. / EK.ED. – Electro-proportional control, series 53
5.49 (139.5)
L
L
1
max. 8.25 (209.5)
S
2.48 (63)
L
4.86 (123.5)
X
4.21 (107)
L
L
1
L
2
9.45 (240)
X
5.12 (130)
4.61 (117)
▼ LA.D. – Pressure, flow and power control, series 53
▼ ED7. / ER7. – Electro-proportional Pressure control, series 52 (53)
L
L
1
L
2
9.09 (231)
5.51 (140)
X
5.12 (130)
S
2.48 (63)
4.49 (114)
L
1
L
S
5.12 (130)
1)
X
9.45 (240)
1) ER7.: 6.26 inch (159 mm) if using an intermediate plate pressure
controller
Bosch Rexroth AG, RE-A 92703/12.2016
36 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 45
Dimensions [in (mm)]
Dimensions size 45
DR – Hydraulic pressure controller, clockwise rotation, series 52
3)
(Ø101.6 )
4.000
3.998
DIA
-0.054
0
(Ø101.6 )
4.000
3.998
DIA
-0.054
0
2.06 (52.4)
0.98 (Ø25)
B
1.03
(26.2)
8.31 (211)
7.01 (178)
L
L
1
3.90 (99)
5.93 (150.5)
5.18 (131.5)
45°
6.77 (172)
5.75 (146)
1.18 (30)
0.25 (6.3)
0.47 (12)
0.37 (9.5)
1.41
(35.7)
max. 8.68 (220.5)
1.50
(ø38)
2.75 (69.9)
S
0.56 (14.3)
3.03 (77)
2.70 (68.5)
B
S
Z
3.54 (90) 3.54 (90)
Y
max. 8.68 (220.5)
1.18
(30)
7.44 (189)
L
L
1
0.25 (6.3)
0.47 (12)
3.90 (99)
0.37 (9.5)
1.50
(38)
1.50
(38)
B
S
0.98 (ø25)
2.06
(52.4)
30°
1.50 (ø38)
1.41
(35.7)
1.03
(26.2)
2.75 (69.9)
30°
X
3.1(78)
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
2) Primary dimensions for pump apply to series 52 and 53
Ports see page38
View Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 45
37
Dimensions [in (mm)]
▼ Splined shaft 1 in SAE J744 ▼ Splined shaft 1 in SAE J744
S ‒ 15T 16/32DP
1)
R ‒ 15T 16/32DP
1)2)
1.81 (45.9)
0.63 (16)
0.20(5)
1.50 (38)
1.18 (30)
1/4-20UNC-2B
3) 4)
Usable shaft length
1/4-20UNC-2B
3) 4)
0.63 (16)
1.81 (45.9)
1.16
(29.5)
0.20 (5)
▼ Splined shaft 7/8 in SAE J744 ▼ Splined shaft 7/8 in SAE J744
U ‒ 13T 16/32DP
1)
W ‒ 13T 16/32DP
1)
1.61 (41)
0.63 (16)
0.20 (5)
1.30 (33.1)
0.99
(25.1)
1/4-20UNC-2B
3) 4)
Usable shaft length
1/4-20UNC-2B
3) 4)
0.63 (16)
1.61 (41)
0.98
(25)
0.20 (5)
▼ Parallel keyed shaft (ISO 3019-1) ▼ Tapered with woodruff key (ISO 3019-1)
K ‒ 25-1 C
1.1102
1.1023
DIA
(28.2 )
(ø25.4 )
1.000
0.998
1.81 (46)
0.63 (16)
1.50 (38.1)
0.260
0.250
(6.35
+0.25
)
-0.03
0.98 (Ø25)
-0.2
1/4-20UNC-2B
3) 4)
0.20
(5)
(3.2 )
-0.1
(6.35 )0.250
0.251
0.250
0.251
0.126
0.130
+0.025
(6.35 )
+0.025
A
B
2.43 (61.8)
0.16 (Ø4)
1.18
(30)
0.13 (3.2)
0.75 (19)
125:1000
0.57 (14.4)
(Ø21.774 )
0.8575
0.8570
DIA
+0.006
-0.006
5/8-18UNF-2A
3) 4)
Key width
Bosch Rexroth AG, RE-A 92703/12.2016
38 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 45
Dimensions [in (mm)]
1) Involute spline according to ANSIB92.1a, 30° pressure angle, flat
root, side fit, tolerance class5
2) Splines according to ANSI B92.1a, run out of spline is a deviation
from standard.
3) Thread according to ASME B1.1
4) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
5) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
6) The spot face can be deeper than as specified in the standard.
7) Depending on the installation position, L, L
1
or L
2
must be con-
nected (also see installation instructions starting on page 68).
8) Only series 53
9) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
Ports Standard Size
4)
p
max abs
[psi (bar)]
5)
State
9)
B Working port (Standard pressure series)
Fastening thread
SAE J518
ASME B1.1
1 in
3/8-16UNC-2B; 0.71 (18) deep
4550 (315) O
S Suction port (standard pressure series)
Fastening thread
SAE J518
ASME B1.1
1 1/2 in
1/2-13UNC-2B; 0.87 (22) deep
75 (5) O
L Drain port ISO 11926
6)
7/8-14UNF-2B; 0.51 (13) deep 30 (2) O
7)
L
1,
L
2
8)
Drain port ISO 11926
6)
7/8-14UNF-2B; 0.51 (13) deep 30 (2) X
7)
X Control pressure ISO 11926 7/16-20UNF-2A; 0.45 (11.5) deep 4550 (315) O
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 45
39
Dimensions [in (mm)]
▼ DRG – Pressure controller, remote controlled, series 52 (53)
▼ EP.D. / EK.D. – Electro-proportional control, series 53
L
L
1
5.93 (150.5)
5.18 (131.5)
max. 8.68 (220.5)
2.68 (68)
X
S
4.53 (115)
4.57 (116)
1.38
(35)
L
L
1
L
2
8.98 (228)
5.75 (146)
2.68
(68)
X
X
5.22 (132.5)
S
▼ DFR/DFR1/DRSC – Pressure and flow control, series 52 (53)
▼ EP.ED. / EK.ED. – Electro-proportional control, series 53
L
L
1
5.93 (150.5)
5.18 (131.5)
max. 8.68 (220.5)
2.68 (68)
X
S
4.53 (115)
1.42
(36)
4.69 (119)
3.35 (85)
L
L
1
L
2
9.69 (246)
X
S
5.24 (133)
▼ LA.D. – Pressure, flow and power control, series 53
▼ ED7. / ER7. – Electro-proportional Pressure control, series 52 (53)
4.58 (116.4)
2.68 (68)
L
L
1
L
2
9.25 (235)
5.75 (146)
X
S
X
5.24 (133)
X
S
5.20 (132)
1)
L
L
1
9.84 (250)
L
L
1) ER7.: 6.57 inch (167 mm) if using an intermediate plate pressure
controller
Bosch Rexroth AG, RE-A 92703/12.2016
40 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 60
Dimensions [in (mm)]
Dimensions size 60
DR – Hydraulic pressure controller, clockwise rotation, mounting flange C series 52
3.07 (78)
1.69 (42.9)
S
L
7.93 (201.5)
9.43 (239.5)
1.97
(Ø50)
3.06 (77.8)
B
2.06 (52.4)
1.03
(26.2)
0.98 (Ø25)
0.25
(6.3)
0.37
(9.5)
45°
Z
X
Y
0.59
(15)
X
4.61 (117)
5.75 (146)
6.77 (172)
5.39 (137)
L
L
L
1
(78.5)
1.57 (40)
2.83 (72) 2.83 (72)
0.56 (14.3)
3.43 (87)
B
S
(Ø101.6 )
4.000
3.998
DIN
-0.054
0
(Ø101.6 )
4.000
3.998
DIN
-0.054
0
max. 8.68 (220.5)
1.30
(33)
1.81 (46)
2.06
(52.4)
0.98 (Ø25)
1.97 (Ø50)
3.06 (77.8)
1.69 (42.9)
1.03 (26.2)
S
B
0.37
(9.5)
0.59 (15)
X
8.19 (208)
4.61 (117)
max. 8.68 (220.5)
1.57
(40)
BS
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
View
Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 60
41
Dimensions [in (mm)]
Dimensions size 60
DR – Hydraulic pressure controller, clockwise rotation, mounting flange D series 52
max. 8.68 (220.5)
max. 8.68 (220.5)
2.83 (72) 2.83 (72)
3.07 (78)
B
L
2.06 (52.4)
1.03 (26.2)
0.98 (Ø25)
0.50 (12.7)
Z
X
Y
4.51 (114.5)
5.83 (148)
5.41 (137.4)
3.43 (87)
45°
5.75 (146)
4.51 (114.5)
4.61 (117)
1.57
(40)
1.69
(42.9)
S
7.93 (201.5)
9.43 (239.5)
1.97
(Ø50)
3.06 (77.8)
0.59 (15)
0.56
(14.3)
B
S
X
L
L
3.09 (78.5)
L
1
0.98 (Ø25)
2.06
(52.4)
8.19 (208)
1.30
(33)
1.97 (Ø50)
3.06 (77.8)
1.67 (42.9)
1.03 (26.2)
S
B
1.81
(46)
0.50
(12.7)
0.24 (6)
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
4.61 (117)
1.57 (40)
X
0.59 (15)
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
View
Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
Bosch Rexroth AG, RE-A 92703/12.2016
42 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 63
Dimensions [in (mm)]
Dimensions size 63
DR – Hydraulic pressure controller, clockwise rotation, mounting flange C series 53
2.83 (72)
2.83 (72)
Z
Y
X
max. 8.68 (220.5)
4.37 (111)
4.55 (115.5)
1.54 (39)
3.50 (89)
5.75 (146)
6.77 (172)
L
1
L
1
L
L
2
3.11 (79)
43°
3.46 (88)
45°
3.05 (77.5)
0.59 (15)
0.37 (9.5)
0.25 (6.3)
B
S
0.56 (14.3)
5.53 (140.4)
9.43 (239.5)
S
1.69
(42.9)
3.06 (77.8)
1.97
(Ø50)
7.93 (201.5)
4.55 (115.5)
B
2.06 (52.4)
1.03 (26.2)
0.98 (Ø25)
1.97 (Ø50)
3.06 (77.8)
1.69 (42.9)
1.03 (26.2)
1.81
(46)
1.30
(33)
max. 8.68 (220.5)
BS
B
S
0.98 (Ø25)
2.06
(52.4)
8.20 (208.2)
4.55 (115.5)
(Ø101.6 )
4.000
3.998
DIA
-0.054
0
(Ø101.6 )
4.000
3.998
DIA
-0.054
0
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
View
Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 63
43
Dimensions [in (mm)]
Dimensions size 63
DR – Hydraulic pressure controller, clockwise rotation, mounting flange D series 53
9.43 (239.5)
S
1.69
(42.9)
3.06 (77.8)
1.97
(Ø50)
7.93 (201.5)
B
2.06 (52.4)
1.03
(26.2)
2.83 (72)
5.75 (146)
max. 8.68 (220.5)
5.75 (146)
0.55 (14)
4.51 (114.5)
4.51 (114.5)
Z
Y
X
4.55 (115.5)
3.50 (89)
L
1
L
1
L
L
2
3.11 (79)
43°
5.91 (150)
3.46 (88)
45°
3.05 (77.5)
B
S
5.51 (140)
4.37 (111)
45°
45°
X
4.55 (115.5)
8.19 (208)
max. 8.68 (220.5)
0.59 (15)
0.59 (15)
0.25 (6.3)
1.54
(39)
L
1
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
0.50 (12.7)
0.25
(6.3)
1.54 (39)
0.50 (12.7)
X
4.55 (115.5)
0.98 (Ø25)
2.06 (52.4)
S
B
1.81
(46)
1.30
(33)
1.97 (Ø50)
3.06 (77.8)
1.69
(42.9)
1.03 (26.2)
2.83 (72)
0.98 (Ø25)
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
View
Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
Bosch Rexroth AG, RE-A 92703/12.2016
44
Dimensions [in (mm)]
A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 63 (60)
▼ Splined shaft 1 1/4 in SAE J744 ▼ Splined shaft 1 1/4 in SAE J744
S ‒ 14T 12/24DP
1)
R ‒ 14T 12/24DP
1)2)
2.18
(55.4)
0.75 (19)
0.20 (5)
1.87 (47.5)
1.56
(39.5)
5/16-18UNC-2B
3) 4)
Usable shaft length
5/16-18UNC-2B
3) 4)
0.75 (19)
2.18 (55.4)
1.50 (38)
0.20 (5)
▼ Splined shaft 1 in SAE J744 ▼ Splined shaft 1 in SAE J744
U ‒ 15T 16/32DP
1)
W ‒ 15T 16/32DP
1)
1.81 (45.9)
0.63 (16)
0.20 (5)
1.50 (38)
0.98
(25)
1/4-20UNC-2B
3) 4)
Usable shaft length
1/4-20UNC-2B
3) 4)
0.63 (16)
1.81 (45.9)
1.14 (29)
0.20 (5)
▼ Parallel keyed shaft (ISO 3019-1) ▼ Tapered with woodruff key (ISO 3019-1)
K ‒ 32-1 C
1.3898
1.3819
DIA
(35.3 )
(ø31.75 )
1.250
1.249
2.18 (55.4)
0.75 (19)
1.87 (47.5)
0.3223
0.3125
(7.94
+0.25
)
-0.03
1.37
(Ø34.91)
-0.2
1/4-20UNC-2B
3) 4)
0.20
(5)
(3.54 )
-0.1
(7.94 )0.3126
0.3136
0.1355
0.1394
+0.025
(7.94 )0.3126
0.3136
+0.025
A
B
2.61 (66.4)
0.16 (Ø4)
1.18
(30)
0.12 (3)
0.93 (23.6)
125:1000
0.56 (14.1)
(Ø31.51 )
1.2403
1.2399
DIA
+0.006
-0.006
1-12UNF-2A
3) 4)
Footnote see page 46
Key width
RE-A 92703/12.2016, Bosch Rexroth AG
45
Dimensions [in (mm)]
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 63 (60)
1) Involute spline according to ANSIB92.1a, 30° pressure angle, flat
root, side fit, tolerance class5
2) Splines according to ANSI B92.1a, run out of spline is a deviation
from standard.
3) Thread according to ASME B1.1
4) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
5) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings..
6) The spot face can be deeper than as specified in the standard.
7) Depending on the installation position, L, L
1
or L
2
must be con-
nected (also see installation instructions starting on page 68).
8) Only series 53
9) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
Ports Standard Size
4)
p
max abs
[psi (bar)]
5)
State
9)
B Working port (Standard pressure series)
Fastening thread
SAE J518
ASME B1.1
1 in
3/8-16UNC-2B; 0.71 (18) deep
4550 (315) O
S Suction port (standard pressure series)
Fastening thread
SAE J518
ASME B1.1
2 in
1/2-13UNC-2B; 0.87 (22) deep
75 (5) O
L Drain port ISO 11926
6)
7/8-14UNF-2B; 0.51 (13) deep 30 (2) O
7)
L
1,
L
2
8)
Drain port ISO 11926
6)
7/8-14UNF-2B; 0.51 (13) deep 30 (2) X
7)
X Control pressure ISO 11926 7/16-20UNF-2A; 0.45 (11.5) deep 4550 (315) O
Bosch Rexroth AG, RE-A 92703/12.2016
46
Dimensions [in (mm)]
A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 63 (60)
▼ DRG – Pressure controller, remote controlled, series 53 (52)
▼ EP.D. / EK.D. – Electro-proportional control, series 53
S
5.93 (150.5)
X
5.39 (137)
L
L
1
L
1
4.76 (121)
2.56 (65)
X
max. 8.68 (220.5)
5.94 (151)
9.49 (241)
4.92 (125)
L
1
L
L
2
X
1.40
(35.6)
5.53 (140.4)
X
4.55 (115.5)
2.55
(64.8)
4.88 (123.9)
S
▼ DFR/DFR1/DRSC – Pressure and flow control, series 53 (52)
▼ EP.ED. / EK.ED. – Electro-proportional control, series 53
S
5.93 (150.5)
X
5.39 (137)
L
L
1
L
1
4.76 (121)
2.56 (65)
X
max. 8.68 (220.5)
9.86 (250.5)
4.92 (125)
L
1
L
L
2
1.42
(36)
5.53 (140.4)
4.55 (115.5)
3.23 (82)
S
X
▼ LA.D. – Pressure, flow and power control, series 53
▼ ED7. / ER7. – Electro-proportional Pressure control, series 53 (52)
L
1
L
L
2
5.51 (140)
5.04 (128)
9.72 (247)
2.56 (65)
S
X
4.88 (124)
X
5.91 (150)
9.88 (251)
5.39 (137)
1)
S
L
L1
L
1
L
1) ER7.: 6.77 inch (172 mm) if using an intermediate plate pressure
controller
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 72
47
Dimensions [in (mm)]
Dimensions size 72
DR – Hydraulic pressure controller, clockwise rotation, mounting flange C series 53
2.83 (72)
2.83 (72)
Z
Y
X
max. 8.68 (220.5)
4.37 (111)
4.55 (115.5)
1.54 (39)
3.50 (89)
5.75 (146)
6.77 (172)
L
1
L
1
L
L
2
3.11 (79)
43°
3.46 (88)
45°
3.05 (77.5)
0.59 (15)
0.37 (9.5)
0.25 (6.3)
B
S
0.56 (14.3)
5.53 (140.4)
9.43 (239.5)
S
1.69
(42.9)
3.06 (77.8)
1.97
(Ø50)
7.93 (201.5)
4.55 (115.5)
B
2.06 (52.4)
1.03 (26.2)
0.98 (Ø25)
1.97 (Ø50)
3.06 (77.8)
1.69 (42.9)
1.03 (26.2)
1.81
(46)
1.30
(33)
max. 8.68 (220.5)
BS
B
S
0.98 (Ø25)
2.06
(52.4)
8.20 (208.2)
4.55 (115.5)
(Ø101.6 )
4.000
3.998
DIA
-0.054
0
(Ø101.6 )
4.000
3.998
DIA
-0.054
0
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
View
Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
Bosch Rexroth AG, RE-A 92703/12.2016
48 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 72
Dimensions [in (mm)]
Dimensions size 72
DR – Hydraulic pressure controller, clockwise rotation, mounting flange D series 53
9.43 (239.5)
S
1.69
(42.9)
3.06 (77.8)
1.97
(Ø50)
7.93 (201.5)
B
2.06 (52.4)
1.03
(26.2)
2.83 (72)
5.75 (146)
max. 8.68 (220.5)
5.75 (146)
0.55 (14)
4.51 (114.5)
4.51 (114.5)
Z
Y
X
4.55 (115.5)
3.50 (89)
L
1
L
1
L
L
2
3.11 (79)
43°
5.91 (150)
3.46 (88)
45°
3.05 (77.5)
B
S
5.51 (140)
4.37 (111)
45°
45°
X
4.55 (115.5)
8.19 (208)
max. 8.68 (220.5)
0.59 (15)
0.59 (15)
0.25 (6.3)
1.54
(39)
L
1
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
0.50 (12.7)
0.25
(6.3)
1.54 (39)
0.50 (12.7)
X
4.55 (115.5)
0.98 (Ø25)
2.06 (52.4)
S
B
1.81
(46)
1.30
(33)
1.97 (Ø50)
3.06 (77.8)
1.69
(42.9)
1.03 (26.2)
2.83 (72)
0.98 (Ø25)
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
Ports see page50
View Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 72
49
Dimensions [in (mm)]
▼ Splined shaft 1 1/4 in SAE J744 ▼ Splined shaft 1 1/4 in SAE J744
S ‒ 14T 12/24DP
1)
R ‒ 14T 12/24DP
1)2)
2.18 (55.4)
0.75 (19)
0.20 (5)
1.87 (47.5)
1.56
(39.5)
5/16-18UNC-2B
3) 4)
Usable shaft length
5/16-18UNC-2B
3) 4)
0.75 (19)
2.18 (55.4)
1.50
(38)
0.20 (5)
▼ Splined shaft 1 in SAE J744 ▼ Splined shaft 1 in SAE J744
U ‒ 15T 16/32DP
1)
W ‒ 15T 16/32DP
1)
1.81 (45.9)
0.63 (16)
0.20 (5)
1.50 (38)
0.98
(25)
1/4-20UNC-2B
3) 4)
Usable shaft length
1/4-20UNC-2B
3) 4)
0.63 (16)
1.81 (45.9)
1.14 (29)
0.20 (5)
▼ Parallel keyed shaft (ISO 3019-1)
K ‒ 32-1
1.3898
1.3819
DIA
(35.3 )
(ø31.75 )
1.250
1.249
2.18 (55.4)
0.75 (19)
1.87 (47.5)
0.3223
0.3125
(7.94
+0.25
)
-0.03
1.37
(Ø34.91)
-0.2
1/4-20UNC-2B
3) 4)
0.20
(5)
1) Involute spline according to ANSIB92.1a, 30° pressure angle, flat
root, side fit, tolerance class5
2) Splines according to ANSI B92.1a, run out of spline is a deviation
from standard.
3) Thread according to ASME B1.1
4) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
Key width
Bosch Rexroth AG, RE-A 92703/12.2016
50 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 72
Dimensions [in (mm)]
Ports Standard Size
1)
p
max abs
psi [bar]
2)
State
6)
B Working port (Standard pressure series)
Fastening thread
SAE J518
ASME B1.1
1 in
3/8-16UNC-2B; 0.71 (18) deep
4550 (315) O
S Suction port (standard pressure series)
Fastening thread
SAE J518
ASME B1.1
2 in
1/2-13UNC-2B; 0.87 (22) deep
75 (5) O
L Drain port ISO 11926
3)
7/8-14UNF-2B; 0.51 (13) deep 30 (2) O
4)
L
1,
L
2
5)
Drain port ISO 11926
3)
7/8-14UNF-2B; 0.51 (13) deep 30 (2) X
4)
X Control pressure ISO 11926 7/16-20UNF-2A; 0.45 (11.5) deep 4550 (315) O
1) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
2) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
3) The spot face can be deeper than as specified in the standard.
4) Depending on the installation position, L, L
1
or L
2
must be con-
nected (also see installation instructions starting on page 68).
5) Only series 53
6) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 72
51
Dimensions [in (mm)]
▼ DRG – Pressure controller, remote controlled, series 53
▼ EP.D. / EK.D. – Electro-proportional control, series 53
max. 8.68 (220.5)
2.56 (65)
4.88 (124)
5.53 (140.5)
X
5.93 (150.5)
L
L
2
X
S
5.94 (151)
9.49 (241)
4.92 (125)
L
1
L
L
2
X
1.40
(35.6)
5.53 (140.4)
X
4.55 (115.5)
2.55
(64.8)
4.88 (123.9)
S
▼ DRF/DRS/DRSC – Pressure and flow control, series 53
▼ EP.ED. / EK.ED. – Electro-proportional control, series 53
max. 8.68 (220.5)
2.56 (65)
4.88 (124)
5.53 (140.5)
X
5.93 (150.5)
L
L
2
X
S
9.86 (250.5)
4.92 (125)
L
1
L
L
2
1.42
(36)
5.53 (140.4)
4.55 (115.5)
3.23 (82)
S
X
▼ LA.D. – Pressure, flow and power control, series 53
▼ ED7. / ER7. – Electro-proportional Pressure control, series 53
L
1
L
L
2
5.51 (140)
5.04 (128)
9.72 (247)
2.56 (65)
S
X
4.88 (124)
X
5.91 (150)
9.86 (250.5)
5.53 (140.5)
1)
X
L
L
2
S
1) ER7.: 6.91 inch (175.5 mm) if using an intermediate plate pressure
controller
Bosch Rexroth AG, RE-A 92703/12.2016
52 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 85
Dimensions [in (mm)]
Dimensions size 85
DR – Hydraulic pressure controller, clockwise rotation, mounting flange C series 52
3.74 (95) 3.35 (85)
S
L
2.00
(50.8)
9.27 (235.5)
10.91 (277)
Z
X
Y
max. 9.51 (241.5)
5.12 (130)
B
S
X
2.48
(Ø63)
3.50 (88.9)
1.25
(31.8)
2.63 (66.7)
B
1.26 (Ø32)
S
B
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
2.63
(66.7)
2.36 (Ø60)
3.50 (88.9)
1.26 (Ø32)
2.00
(50.8)
1.25 (31.8)
1.97
(50)
1.77
(45)
6.14 (156)
max. 9.53 (242)
5.12 (130)
X
L
L
1
9.65 (245)
0.50 (12.7)
0.79 (20)
1.57 (40)
0.50 (12.7)
0.79 (20)
1.57 (40)
7.13 (181)
8.27 (210)
45°
3.74 (95)
3.68 (93.5)3.42 (87)
0.69 (17.5)
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
Ports see page55
View Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 85
53
Dimensions [in (mm)]
Dimensions size 85
DR – Hydraulic pressure controller, clockwise rotation, mounting flange D series 53
S
3.74 (95) 3.35 (85)
2.63 (66.7)
1.26 (Ø32)
1.25
(31.8)
B
9.25 (235)
2.48
(Ø63)
3.50 (88.9)
10.91 (277)
2.00
(50.8)
Z
Y
0.79 (20)
1.42 (36)
5.12 (130)
5.63 (143)
max. 9.90 (251.5)
0.50 (12.7)
1.42 (36)
0.50 (12.7)
X
B
S
9.65 (245)
45°
4.96 (126)
4.51 (114.5)
4.51 (114.5)
5.75 (146)
0.56
(14.3)
5.91 (150)
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
3.98 (101)4.04 (102.5)
5.12 (130)
5.63 (143)
45°
3.74 (95)
3.74 (95)
0.16 (4)
0.16 (4)
L
L
2
L
1
X
max. 9.90 (251.5)
S
B
2.63
(66.7)
2.36 (Ø60)
3.50 (88.9)
1.26 (Ø32)
2.00
(50.8)
1.25 (31.8)
1.97
(50)
1.77
(45)
X
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
Ports see page55
View Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
Bosch Rexroth AG, RE-A 92703/12.2016
54 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 85
Dimensions [in (mm)]
▼ Splined shaft 1 1/2 in SAE J744 ▼ Splined shaft 1 1/2 in SAE J744
S ‒ 17T 12/24DP
1)
R ‒ 17T 12/24DP
1)
2.44 (61.9)
1.10 (28)
0.20(5)
2.13 (54)
1.71
(43.5)
7/16-14UNC-2B
3) 4)
7/16-14UNC-2B
3) 4)
1.10 (28)
2.44 (61.9)
1.65 (42)
0.20
(5)
▼ Splined shaft 1 1/4 in SAE J744 ▼ Splined shaft 1 1/4 in SAE J744
U ‒ 14T 12/24DP
1)
W ‒ 14T 12/24DP
1)
2.18 (55.4)
0.75 (19)
0.20 (5)
1.87 (47.5)
1.38
(35)
5/16-18UNC-2B
3) 4)
Usable shaft length
5/16-18UNC-2B
3) 4)
0.75 (19)
2.18 (55.4)
1.30 (33)
0.20 (5)
▼ Parallel keyed shaft (ISO 3019-1)
K ‒ 38-1
1.6653
1.6500
DIA
(42.3 )
(ø38.1 )
1.500
1.499
2.44 (61.9)
1.10 (28)
2.10 (53.5)
0.3758
0.3748
(9.52
+0.025
)
-0.03
-0.4
7/16-14UNC-2B
3) 4)
0.20
(5)
Key width
1) Involute spline according to ANSIB92.1a, 30° pressure angle, flat
root, side fit, tolerance class5
2) Splines according to ANSI B92.1a, run out of spline is a deviation
from standard.
3) Thread according to ASME B1.1
4) Observe the instructions in the operating instructions concerning
the maximum tightening torques
Usable shaft length
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 85
55
Dimensions [in (mm)]
Ports Standard Size
4)
p
max abs
psi [bar]
5)
State
8)
B Working port (Standard pressure series)
Fastening thread
SAE J518
ASME B1.1
1 1/4 in
1/2-13UNC-2B; 0.75 (19) deep
4550 (315) O
S Suction port (standard pressure series)
Fastening thread
SAE J518
ASME B1.1
2 1/2 in
1/2-13UNC-2B; 1.07 (27) deep
75 (5) O
L Drain port ISO 11926
6)
1 1/16-12UNF-2B; 0.59 (15) deep 30 (2) O
7)
L
1,
L
2
Drain port ISO 11926
6)
1 1/16-12UNF-2B; 0.59 (15) deep 30 (2) X
7)
X Control pressure ISO 11926 7/16-20UNF-2A; 0.45 (11.5) deep 4550 (315) O
1) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
2) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
3) The spot face can be deeper than as specified in the standard.
4) Depending on the installation position, L, L
1
or L
2
must be con-
nected (also see installation instructions starting on page 68).
5) Only series 53
6) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
Bosch Rexroth AG, RE-A 92703/12.2016
56 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 85
Dimensions [in (mm)]
▼ DRG – Pressure controller, remote controlled, series 52 (53)
▼ EP.D. / EK.D. – Electro-proportional control, series 53
5.49(139.5)
X
2.91 (74)
6.14 (156)
L
L
1
S
max. 9.51 (241.5)
6.75 (171.5)
X
1.42
(36)
X
5.59 (142)
5.91 (150)
5.24 (133)
2.91
(74)
7.15 (181.5)
10.51 (267)
L
L
2
L
1
X
S
▼ DRF/DRS/DRSC – Pressure and flow control, series 52 (53)
▼ EP.ED. / EK.ED. – Electro-prop. control, series 53
5.49(139.5)
X
2.91 (74)
6.14 (156)
L
L
1
S
max. 9.51 (241.5)
6.75 (171.5)
X
S
5.24 (133)
2.91 (74)
7.15 (181.5)
11.06 (281)
X
5.91 (150)
L
L
2
L
1
X
▼ LA.D. – Pressure, flow and power control, series 53
▼ ED7. / ER7. – Electro-prop. Pressure control, series 52 (53)
X
S
5.71(145)
5.90 (149.9)
5.25 (133.4)
2.91 (74)
7.15 (181.5)
10.67 (271)
L
L
2
L
1
X
0.76 (19.4)
2.17 (55)
6.14 (156)
1)
10.68 (271.4)
X
L
1
L
S
1) ER7.: 7.52 inch (191 mm) if using an intermediate plate pressure
controller
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 100
57
Dimensions [in (mm)]
Dimensions size 100
DR – Hydraulic pressure controller, clockwise rotation, mounting flange C series 53
S
3.74 (95) 3.35 (85)
2.63 (66.7)
1.26 (Ø32)
1.25
(31.8)
B
9.25 (235)
2.48
(Ø63)
3.50 (88.9)
10.91 (277)
2.00
(50.8)
0.79 (20)
1.42 (36)
5.12 (130)
5.63 (143)
max. 9.90 (251.5)
0.50 (12.7)
1.42 (36)
0.50 (12.7)
X
B
S
9.65 (245)
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
5.12 (130)
5.63 (143)
X
max. 9.90 (251.5)
S
B
2.62
(66.7)
2.36 (Ø60)
3.50 (88.9)
1.26
(Ø32)
2.00
(50.8)
1.25
(31.8)
1.97
(50)
1.77
(45)
0.16 (4)
45°
5.91 (150)
3.98 (101)4.03 (102.5)
7.13 (181)
8.27 (210)
45°
3.74 (95)
3.74 (95)
0.16 (4)
0.69 (17.5)
L
L
L
L
2
L
1
L
1
L
1
X
Y
Z
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
View
Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
Bosch Rexroth AG, RE-A 92703/12.2016
58 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 100
Dimensions [in (mm)]
Dimensions size 100
DR – Hydraulic pressure controller, clockwise rotation, mounting flange D series 53
S
3.74 (95) 3.35 (85)
2.63 (66.7)
1.26
(Ø32)
1.25
(31.8)
B
9.25 (235)
2.48
(Ø63)
3.50 (88.9)
10.91 (277)
2.00
(50.8)
0.79 (20)
1.42 (36)
5.12 (130)
5.63 (143)
max. 9.90 (251.5)
0.50 (12.7)
1.42 (36)
0.50 (12.7)
X
B
S
9.65 (245)
0.16 (4)
45°
4.96 (126)
4.51 (114.5)
4.51 (114.5)
5.75 (146)
0.56
(14.3)
5.91 (150)
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
(Ø127 )
5.0000
4.9975
DIA
-0.063
0
3.98 (101)
4.04 (102.5)
5.12 (130)
5.63 (143)
45°
3.74 (95)
3.74 (95)
0.16 (4)
L
L
1
L
L
1
L
L
2
L
1
X
max. 9.90 (251.5)
S
B
2.62
(66.7)
2.36 (Ø60)
3.50 (88.9)
1.26 (Ø32)
2.00
(50.8)
1.25
(31.8)
1.97
(50)
1.77
(45)
X
Y
Z
1) Dimensions of working ports turned through 180° for counter-clockwise rotation
View
Y
1)
View X
1)
Detail Z
▼ Port plate 61
▼ Port plate 62
Flange
ISO 3019-1
Flange
ISO 3019-1
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions size 100
59
Dimensions [in (mm)]
▼ Splined shaft 1 1/2 in SAE J744 ▼ Splined shaft 1 1/4 in SAE J744
S ‒ 17T 12/24DP
1)
U ‒ 14T 12/24DP
1)
2.44 (61.9)
1.10 (28)
0.20(5)
2.13 (54)
1.71
(43.5)
7/16-14UNC-2B
3) 4)
2.18 (55.4)
0.75 (19)
0.20 (5)
1.87 (47.5)
1.38
(35)
5/16-18UNC-2B
3) 4)
▼ Splined shaft 1 1/4 in SAE J744
▼ Parallel keyed shaft (ISO 3019-1)
W ‒ 14T 12/24DP
1)
K ‒ 38-1
Usable shaft length
5/16-18UNC-2B
3) 4)
0.75 (19)
2.18 (55.4)
1.30 (33)
0.20 (5)
1.6653
1.6500
DIA
(42.3 )
(ø38.1 )
1.500
1.499
2.44 (61.9)
1.10 (28)
2.10 (53.5)
0.3758
0.3748
(9.52
+0.025
)
-0.03
-0.4
7/16-14UNC-2B
3) 4)
0.20
(5)
Ports Standard Size
4)
p
max abs
[psi (bar)]
5)
Status
9)
B Working port (high-pressure line)
Fastening thread
SAE J518
ASME B1.1
1 1/4 in
1/2-13UNC-2B; 0.75 (19) deep
4550 (315) O
S Suction port (standard pressure series)
Fastening thread
SAE J518
ASME B1.1
2 1/2 in
1/2-13UNC-2B; 1.07 (27) deep
75 (5) O
L Drain port ISO 11926
6)
1 1/16-12UNF-2B; 0.59 (15) deep 30 (2) O
7)
L
1,
L
2
8)
Drain port ISO 11926
6)
1 1/16-12UNF-2B; 0.59 (15) deep 30 (2) X
7)
X Control pressure ISO 11926 7/16-20UNF-2A; 0.45 (11.5) deep 4550 (315) O
Key width
1) Involute spline according to ANSIB92.1a, 30° pressure angle, flat
root, side fit, tolerance class5
2) Splines according to ANSI B92.1a, run out of spline is a deviation
from standard.
3) Thread according to ASME B1.1
4) Observe the instructions in the operating instructions concerning
the maximum tightening torques.
5) Momentary pressure spikes may occur depending on the application.
Keep this in mind when selecting measuring devices and fittings.
6) The spot face can be deeper than as specified in the standard.
7) Depending on the installation position, L, L
1
or L
2
must be con-
nected (also see installation instructions starting on page 68).
8) Only series 53
9) O= Must be connected (plugged when delivered)
X= Plugged (in normal operation)
Key width
Bosch Rexroth AG, RE-A 92703/12.2016
60 A10VO series 52 and 53 | Axial piston variable pump
Dimensions size 100
Dimensions [in (mm)]
▼ DRG – Pressure controller, remote controlled, series 53
▼ EP.D. / EK.D. – Electro-proportional control, series 53
S
5.24 (133)
2.91 (74)
7.15 (181.5)
max. 9.90 (251.5)
X
X
5.91 (150)
L
L
2
L
1
1.42
(36)
X
5.59 (142)
5.91 (150)
5.24 (133)
2.91
(74)
7.15 (181.5)
10.51 (267)
L
L
2
L
1
X
S
▼ DRF/DRS/DRSC – Pressure and flow control, series 53
▼ EP.ED. / EK.ED. – Electro-proportional control, series 53
S
5.24 (133)
2.91 (74)
7.15 (181.5)
max. 9.90 (251.5)
X
X
5.91 (150)
L
L
2
L
1
S
5.24 (133)
2.91 (74)
7.15 (181.5)
11.06 (281)
X
5.91 (150)
L
L
2
L
1
X
▼ LA.D. – Pressure, flow and power control, series 53
▼ ED7. / ER7. – Electro-proportional Pressure control, series 53
X
S
5.71(145)
5.90 (149.9)
5.25 (133.4)
2.91 (74)
7.15 (181.5)
10.67 (271)
L
L
2
L
1
X
S
10.71 (272)
X
6.14 (156)
1)
L
L
2
L
1
1) ER7.: 7.52 inch (191 mm) if using an intermediate plate pres-
sure controller
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions through drive
61
Dimensions [in (mm)]
Dimensions through drive
Flange ISO 3019-1 (SAE) Hub for splined shaft
1)
Availability over sizes Code
Diameter Attachment
2)
Diameter 18 28 45 60/63 72 85 100
82-2 (A)
,
5/8 in
9T 16/32DP
● ● ● ● ● ● ●
K01
3/4 in
11T 16/32DP
● ● ● ● ● ● ●
K52
●
= Available
○
= On request
▼ 82-2
A4
A3
A2
0.39
(10)
(ø82.55 )
3.2520
3.2501
DIA
+0.050
+0.020
A
B
45°
4.19
(106.5)
A1 (to mounting flange)
Omitted for size 18 and 28
Omitted for size 18 and 28
Section A-B
4.19
(106.5)
AB
A4
45°
A3
0.39
(10)
A2
(ø82.55 )
3.2520
3.2501
DIA
+0.050
+0.020
Omitted for size 18 and 28
Omitted for size 18 and 28
A1 (to mounting flange)
Section A-B
K01
(SAE J744 16-4 (A))
NG A1 A2 A3 A4
3)
K52
(SAE J744 19-4 (A-B))
NG A1 A2 A3 A4
3)
18 7.17
(182)
0.37
(9.3)
1.70
(43.3)
M10; 0.57
(14.5) deep
18 7.17
(182)
1.54
(39)
0.74
(18.8)
M10; 0.57
(14.5) deep
28 8.03
(204)
0.39
(9.9)
1.85
(47)
M10; 0.63
(16) deep
28 8.03
(204)
1.54
(39.3)
0.74
(18.8)
M10; 0.63
(16) deep
45 9.02
(229)
0.42
(10.7)
2.09
(53)
M10; 0.63
(16) deep
45 9.02
(229)
1.55
(39.4)
0.75
(18.9)
M10; 0.63
(16) deep
60/
63
10.04
(255)
0.37
(9.5)
2.32
(59)
M10; 0.63
(16) deep
60/
63
10.04
(255)
1.55
(39.4)
0.75
(18.9)
M10; 0.63
(16) deep
72 10.04
(255)
0.37
(9.5)
2.32
(59)
M10; 0.63
(16) deep
72 10.04
(255)
1.55
(39.4)
0.75
(18.9)
M10; 0.63
(16) deep
85 11.89
(302)
0.53
(13.4)
2.68
(68)
M10; 0.79
(20) deep
85 11.89
(302)
1.74
(44.1)
0.93
(23.6)
M10; 0.79
(20) deep
100 11.89
(302)
0.53
(13.4)
2.68
(68)
M10; 0.79
(20) deep
100 11.89
(302)
1.74
(44.1)
0.93
(23.6)
M10; 0.79
(20) deep
1) According to ANSI B92.1a, 30° pressure angle, flat root, side fit,
tolerance class 5
2) Mounting bores pattern viewed from through drive with control at top
3) Thread according to DIN 13, observe the instructions in the in-
struction manual for the maximum tightening torques.
Bosch Rexroth AG, RE-A 92703/12.2016
62 A10VO series 52 and 53 | Axial piston variable pump
Dimensions through drive
Dimensions [in (mm)]
1) According to ANSI B92.1a, 30° pressure angle, flat root, side fit,
tolerance class 5
2) Mounting bores pattern viewed from through drive with control at
top
3) Thread according to DIN 13, observe the instructions in the in-
struction manual for the maximum tightening torques.
Flange ISO 3019-1 (SAE) Hub for splined shaft
1)
Availability over sizes Code
Diameter Attachment
2)
Diameter 18 28 45 60/63 72 85 100
101-2 (B)
,
7/8 in
13T 16/32DP
– ● ● ● ● ● ●
K68
1 in
15T 16/32DP
– – ● ● ● ● ●
K04
●
= Available
○
= On request
▼ 101-2
Omitted for sizes 28, 45
Omitted for sizes 28, 45
A1 (to mounting flange)
Section A-B
A4
45°
5.75
(146)
A
B
A3
0.39
(10)
A2
(ø101.6 )
4.0020
4.0008
DIA
+0.050
+0.020
Omitted for size 45
Omitted for size 45
A1 (to mounting flange)
Section A-B
A4
45°
5.75
(146)
A
B
A3
A2
0.39
(10)
(ø101.6 )
4.0020
4.0008
DIA
+0.050
+0.020
K68
(SAE J744 22-4 (B))
NG A1 A2 A3 A4
3)
K04
(SAE J744 25-4 (B-B))
NG A1 A2 A3 A4
3)
28 8.03
(204)
1.66
(42.3)
0.70
(17.8)
M12; 0.71
(18) deep
45 9.02
(229)
1.88
(47.9)
0.74
(18.9)
M12; 0.71
(18) deep
45 9.02
(229)
1.67
(42.4)
0.71
(17.9)
M12×1.75; 0.71
18 deep
60/
63
10.04
(255)
1.87
(47.4)
0.72
(18.4)
M12; 0.71
(18) deep
60/
63
10.04
(255)
1.67
(42.4)
0.71
(17.9)
M12; 0.71
(18) deep
72 10.04
(255)
1.87
(47.4)
0.72
(18.4)
M12; 0.71
(18) deep
72 10.04
(255)
1.67
(42.4)
0.71
(17.9)
M12; 0.71
(18) deep
85 11.89
(302)
2.02
(51.2)
0.87
(22.2)
M12; 0.79
(20) deep
85 11.89
(302)
1.83
(46.5)
0.87
(22)
M12; 0.79
(20) deep
100 11.89
(302)
2.02
(51.2)
0.87
(22.2)
M12; 0.79
(20) deep
100 11.89
(302)
1.83
(46.5)
0.87
(22)
M12; 0.79
(20) deep
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Dimensions through drive
63
Dimensions [in (mm)]
1) According to ANSI B92.1a, 30° pressure angle, flat root, side fit,
tolerance class 5
2) Mounting bores pattern viewed from through drive with control at top
3) Thread according to DIN 13, observe the instructions in the in-
struction manual for the maximum tightening torques.
Flange ISO 3019-1 (SAE) Hub for splined shaft
1)
Availability over sizes Code
Diameter Attachment
2)
Diameter 18 28 45 60/63 72 85 100
127-4 (C)
1 1/4 in
14T 12/24DP
– – – ● ● ● ●
K15
1 1/2 in
17T 12/24DP
– – – – – ● ●
K16
●
= Available
○
= On request
▼ 127-4
Section A-B
A1 (to mounting flange)
B
A
4.51 (114.5)
4.51 (114.5)
A4
0.51
(13)
A2
A3
(ø127 )
5.0020
5.0008
DIA
+0.050
+0.020
A1 (to mounting flange)
Section A-B
(ø127 )
5.0020
5.0008
DIA
+0.050
+0.020
B
A
4.51 (114.5)
4.51 (114.5)
A4
0.53
(13.4)
A2
A3
K15
(SAE J744 32-4 (C))
NG A1 A2 A3 A4
3)
K16
(SAE J744 32-4 (C))
NG A1 A2 A3 A4
3)
60/63 10.04
(255)
0.31
(8)
2.32
(59)
M12; 0.63
(16) deep
85 11.87
(301.5)
0.51
(13)
2.67
(67.9)
M12;
through
72 10.04
(255)
0.31
(8)
2.32
(59)
M12; 0.63
(16) deep
100 11.87
(301.5)
0.51
(13)
2.67
(67.9)
M12;
through
85 11.87
(301.5)
0.51
(13)
2.67
(67.9)
M12;
through
100 11.87
(301.5)
0.51
(13)
2.67
(67.9)
M12;
through
Bosch Rexroth AG, RE-A 92703/12.2016
64 A10VO series 52 and 53 | Axial piston variable pump
Dimensions through drive
Dimensions [in (mm)]
1) According to ANSI B92.1a, 30° pressure angle, flat root, side fit,
tolerance class 5
2) Mounting bores pattern viewed from through drive with control at top
3) Thread according to DIN 13, observe the instructions in the in-
struction manual for the maximum tightening torques.
Flange ISO 3019-1 (SAE) Hub for splined shaft
1)
Availability over sizes Code
Diameter Attachment
2)
Diameter 18 28 45 60/63 72 85 100
127-2 (B)
,
1 1/4 in
14T 12/24DP
– – – – – ● ●
K07
1 1/2 in
17T 12/24DP
– – – – – ● ●
K24
●
= Available
○
= On request
▼ 127-2
A1 (to mounting flange)
Section A-B
0.51
(13)
(Ø127 )
5.0020
5.0008
DIA
+0.050
+0.020
B
45°
A
A
2
A
3
A
4
Ø181
A1 (to mounting flange)
Section A-B
A4
A
B
45°
7.13
(Ø181)
A3
A2
0.51
(13)
(Ø127 )
5.0020
5.0008
DIA
+0.050
+0.020
K07
(SAE J744 32-4 (C))
NG A1 A2 A3 A4
3)
K24
(SAE J744 38-4 (C-C))
NG A1 A2 A3 A4
3)
85 11.87
(301.5)
0.86
(21.8)
2.33
(59.3)
M16;0.94
(24) deep
85 11.89
(302)
0.31
(8)
2.68
(68)
M16; 0.94
(24) deep
100 11.87
(301.5)
0.86
(21.8)
2.33
(59.3)
M16;0.94
(24) deep
100 11.89
(302)
0.31
(8)
2.68
(68)
M16; 0.94
(24) deep
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Overview of attachment options
65
Dimensions [in (mm)]
Overview of attachment options
Through drive Attachment options – 2nd pump
Flange
ISO 3019-1
Hub for
splined shaft
Code A10V(S)O/5x NG (shaft) A10VO/31 NG (shaft)
A1VO/10 NG (shaft) External gear
82-2 (A) 5/8 in K01 10 (U), 18 (U) 18 (U)
18 (S2)
AZPF
3/4 in K52 10 (S), 18 (S, R) 18 (S, R)
18 (S3)
101-2 (B) 7/8 in K68 28 (S, R)
45 (U, W)
1)
28 (S, R)
45 (U,W)
35 (S4)
AZPN/AZPG
1 in K04 45 (S, R)
60, 63 (U, W)
2)
72 (U, W)
2)
45 (S, R) 35 (S5) –
127-4 (C) 1 1/4 in K15 60, 63 (S, R)
72 (S, R)
–
– –
1 1/2 in K16 85 (S)
100 (S)
–
– –
127-2 (C) 1 1/4 in K07 85 (U,W)
100 (U,W)
71 (S, R)
– PGH5
1 1/2 in K24 85 (S)
100 (S)
–
– –
1) Not for NG28 with K68
2) Not for NG45 with K04
Bosch Rexroth AG, RE-A 92703/12.2016
66 A10VO series 52 and 53 | Axial piston variable pump
Combination pumps A10VO + A10VO
Dimensions [in (mm)]
Combination pumps A10VO + A10VO
By using combination pumps, it is possible to have inde-
pendent circuits without the need for splitter gearboxes.
When ordering combination pumps, the type designations
of the 1st and 2nd pump must be linked by a "+".
Order example:
A10VO85DRS/53R-VSC62K04+
A10VO45DRF/53R-VSC61N00
It is permissible to use a combination of two single pumps
of the same nominal size (tandem pump) considering a
dynamic mass acceleration of maximum 10 g (= 98.1 m/s
2
)
without additional support brackets.
For combination pumps consisting of more than two
pumps, the mounting flange must be rated for the permis-
sible mass torque (please consult us).
Permissible mass moment of inertia
NG 10 18 28 45 60/63 72 85 100
static
T
m
lb-ft
(Nm)
– 369
(500)
656
(890)
664
(900)
1010
(1370)
1010
(1370)
2270
(3080)
2270
(3080)
dynamic at 10g (98.1 m/s
2
)
T
m
lb-ft
(Nm)
– 37
(50)
65
(89)
66
(90)
101
(137)
101
(137)
227
(308)
227
(308)
Weight with through-drive plate
Weight without through-drive plate
(e.g. 2
nd
pump)
m
lbs (kg) – (–)
8 (18)
29 (13)
25 (11.5)
40 (18)
33 (15)
53 (24)
40 (18)
62 (28)
49 (22)
62 (28)
49 (22)
99 (45)
79 (36)
99 (45)
79 (36)
Distance, center of gravity
without through drive
l
1
in
(mm)
– 3.07
(78)
3.35
(85)
3.78
(96)
4.13
(105)
4.13
(105)
4,80
(122)
4.80
(122)
Distance, center of gravity
with through drive
l
1
in
(mm)
– 3.43
(87)
3.90
(99)
4.53
(115)
5.00
(127)
5.00
(127)
5.90
(150)
5.90
(150)
l
1
l
2
m
2
m
1
m
1
, m
2
, m
3
Weight of pump [lbs (kg)]
l
1
, l
2
, l
3
Distance, center of gravity [in (mm)]
T
m
= (m
1
× l
1
+ m
2
× l
2
+ m
3
× l
3
) ×
1
[lb-ft (Nm)]
12 (102)
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Connector for solenoids
67
Dimensions [in (mm)]
Connector for solenoids
DEUTSCH DT04-2P
Molded connector, 2-pin, without bidirectional
suppressor diode
The following type of protection ensues with a mounted
mating connector:
▶ IP67 (DIN/EN 60529) and
▶ IP69K (DIN 40050-9)
▼ Circuit diagram symbol
▼ 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).
Electronic controls
Control Electronics function Electronics Data sheet
Electric pressure control Controlled power outlet RA analog 95230
RC4-5/30 digital 95205
1.44 (36.7)
(2)
(1)
1.44 (36.7)
2.70 (68.5)
DIA 1.46
(ø37)
1.97 (50)
Changing plug position
If necessary, you can change the position of the connector
by turning the solenoid.
To do this, proceed as follows:
▶ Loosen the mounting nut (1) of the solenoid. To do this,
turn the mounting nut (1) one revolution counter-clockwise.
▶ Turn the solenoid body (2) to the desired orientation.
▶ Re-tighten the mounting nut.
Tightening torque: 3.7
+0.75
lb-ft (5
+1
Nm).
(WAF 26, 12-sided DIN 3124)
On delivery, the position of the connector may differ from
that shown in the brochure or drawing.
Bosch Rexroth AG, RE-A 92703/12.2016
68 A10VO series 52 and 53 | Axial piston variable pump
Installation instructions
Dimensions [in (mm)]
1) Because complete air bleeding and filling are not possible in this
position, the pump should be air bled and filled in a horizontal po-
sition before installation.
2) For NG10 and NG28 series 52, L
1
is opposite, L must then be con-
nected if necessary.
3) Only series 53
Installation instructions
General
The axial piston unit must be filled with hydraulic fluid 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 with the "drive shaft up/down" installation
position, filling and air bleeding must be carried out com-
pletely as there is, for example, a danger of dry running.
The case drain fluid in the pump housing must be directed
to the reservoir via the highest available drain port (L, L
1
2)
,
L
2
3)
).
For combinations of multiple units, the case drain fluid
must be drained off at each pump. If a shared reservoir line
is used for several units, make sure that the case pressure
in each pump 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
operational circumstances, particularly at cold start. If this
is not possible, separate drain lines must be laid if neces-
sary.
To achieve favorable noise values, decouple all connecting
lines using elastic elements and avoid above-reservoir
installation.
In all operating conditions, the suction line and drain line
must flow into the reservoir below the minimum fluid level.
The permissible suction height h
S
results from the overall
loss of pressure. However, it must not be higher than
h
Smax
=31.5 in (800 mm). The minimum suction pressure at
port S must also not fall below 12 psi (0.8bar) absolute
during operation and during cold start.
When designing the reservoir, ensure adequate distance
between the suction line and the case drain line. This
prevents the heated, return flow from being drawn directly
back into the suction line.
Note
In certain installation positions, an influence on the con-
trol characteristic can be expected. Gravity, dead weight
and case pressure can cause minor shifts in control char-
acteristic curves and changes in response time.
For key, see page70.
Installation position
See the following examples 1 to 12.
Additional installation positions are possible upon request.
Recommended installation position: 1 and 3
Below-reservoir installation (standard)
Below-reservoir installation is when the axial piston unit is
installed outside of the reservoir and below the minimum
fluid level.
Installation position Air bleeding Filling
1
2)
L
L
1
S
X
h
t min
SB
F
h
min
F S + L or L
1
2
1)
X
SB
F
L
L
1
S
h
t min
h
min
F S + L
1
3
3)
L
L
2
L
1
S
SB
F
h
t min
h
min
F S + L or L
1
4
SB
F
L
L
1
S
h
t min
h
min
F S + L or L
1
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Installation instructions
69
Dimensions [in (mm)]
1) Because complete air bleeding and filling are not possible in this
position, the pump should be air bled and filled in a horizontal po-
sition before installation.
2) For NG10 and NG28 series 52, L
1
is opposite, L must then be con-
nected if necessary.
3) Only series 53
Above-reservoir installation
Above-reservoir installation means that the axial piston unit
is installed above the minimum fluid level of the reservoir.
To prevent the axial piston unit from draining, a height
difference h
ES min
of at least 1 in (25mm) is required in
position 6
Observe the maximum permissible suction height
h
S max
=
31.5 in (800 mm)
.
Installation position Air bleeding Filling
5
2)
X
L
L
1
S
F
SB
h
s max
h
t min
h
min
F L
1
or L
6
1)2)
SB
S
F
L
L
1
h
s max
h
t min
h
min
h
ES min
X
F L
1
7
3)
L
L
2
S
L
1
F
SB
h
s max
h
t min
h
min
F L
2
8
1)
SB
S
F
L
L
1
h
s max
h
t min
h
min
F S or L
A check valve in the case drain line is only permissible in
individual cases. Consult us for approval.
For key, see page70.
Bosch Rexroth AG, RE-A 92703/12.2016
70 A10VO series 52 and 53 | Axial piston variable pump
Installation instructions
Dimensions [in (mm)]
1) Because complete air bleeding and filling are not possible in this
position, the pump should be air bled and filled in a horizontal po-
sition before installation.
2) For NG10 and NG28 series 52, L
1
is opposite, L must then be con-
nected if necessary.
3) Only series 53
Reservoir installation
Inside-reservoir installation is when the axial piston unit is
installed in the reservoir below the minimum fluid level. The
axial piston unit is completely below the hydraulic fluid.
If the minimum fluid level is equal to or below the upper
edge of the pump, see chapter "Above-reservoir installation".
Axial piston units with electric components (e.g. electric
controls, sensors) must not be installed in a reservoir below
the fluid level.
Installation position Air bleeding Filling
9
2)
L
L
1
S
h
min
SB
h
t min
X
Via the high-
est available
port L
Automatically
via the open
port
L
or
L
1
due to the
position un-
der the hy-
draulic fluid
level
10
L
L
1
S
SB
h
min
h
t min
X
Via the high-
est available
port L
1
Automatically
via the open
port
L,
L
1
or
S
due to the
position un-
der
the hy-
draulic fluid
level
11
3)
L
L
2
S
SB
h
min
h
t min
12
L
L
1
S
SB
h
min
h
t min
Via the high-
est available
port L
Automatically
via the open
port
L,
L
1
or
S
due to the
position un-
der the hy-
draulic fluid
level
Key and assembly note
Key
F Filling / air bleeding
S Suction port
L; L
1
Drain port
SB Baffle (baffle 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
ES min
Minimum necessary height required to protect the axial
piston unit from draining (1 in (25 mm)
h
S max
Maximum permissible suction height 21.50 in (800 mm)
Note
Port F is part of the external piping and must be provided
on the customer side to make filling and air bleeding easier.
RE-A 92703/12.2016, Bosch Rexroth AG
Axial piston variable pump | A10VO series 52 and 53
Installation instructions
71
Dimensions [in (mm)]
72
Bosch Rexroth AG, RE-A 92703/12.2016
A10VO series 52 and 53 | Axial piston variable pump
Project planning notes
Bosch Rexroth Corporation
Mobile Applications
8 Southchase Court
Fountain Inn, SC 29644-9018
USA
Telephone (864) 967-2777
Facsimile (864) 967-8900
www.boschrexroth-us.com
© Bosch Rexroth Corporation
All rights reserved. Neither this document, nor any part of it, may be repro-
duced, duplicated, circulated or disseminated, whether by copy, electronic
format or any other means, without the prior consent and authorization of
Bosch Rexroth Corp.
The data and illustrations in this brochure/data sheet are intended only to
describe or depict the products. No representation or warranty, either express
or implied, relating to merchantability or fitness for intended use, is given or
intended by virtue of the information contained in this brochure/data sheet.
The information contained in this brochure/data sheet in no way relieves the
user of its obligation to insure the proper use of the products for a specific
use or application. All products contained in this brochure/data sheet are
subject to normal wear and tear from usage.
Subject to change.
Bosch Rexroth Corporation
2315 City Line Road
Bethlehem, PA 18017-2131, USA
Telephone (610) 694-8300
Facsimile (610) 694-8467
www.boschrexroth-us.com
A10VO series 52 and 53 | Axial piston variable pump
Project planning notes and Safety instructions
Project planning notes
▶ The A10VO axial piston variable pump is designed to be
used in open circuit.
▶ The project planning, installation and commissioning of
the axial piston unit requires the involvement of quali-
fied personnel.
▶ Before using the axial piston unit, please read the corre-
sponding instruction manual completely and thoroughly.
If necessary, request it from Bosch Rexroth.
▶ Before finalizing your design, please request a binding
installation drawing.
▶ The specified data and notes must be observed.
▶ Depending on the operating conditions of the axial
piston unit (operating pressure, fluid temperature), the
characteristic may shift.
▶ Preservation: Our axial piston units are supplied as stan-
dard with protection to preserve for a maximum of
12months. If longer preservative 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 variants of the product are approved for use in safety
functions 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. When a
direct current is applied, solenoids do not cause electro-
magnetic interference nor is their operation impaired by
electromagnetic interference.
Other behavior can result when a modulated direct
current (e.g. PWM signal) is applied. Potential electro-
magnetic interference for persons (e.g. persons with a
pacemaker) and other components must be tested by
the machine manufacturer.
▶ Pressure controllers are not safeguards against pressure
overload. Be sure to add a pressure relief valve to the
hydraulic system.
▶ Working ports:
– The ports and fastening threads are designed for the
specified maximum pressure. The machine or system
manufacturer must ensure that the connecting ele-
ments and lines correspond to the intended operating
conditions (pressure, flow, hydraulic fluid, tempera-
ture) with allowance for the necessary safety margins.
– The working ports and function ports can only be
used to accommodate hydraulic lines.
Safety instructions
▶ During and shortly after operation, there is a risk of
burns on the axial piston unit and especially on the
solenoids. Take appropriate safety measures (e.g.by
wearing protective clothing).
▶ Moving parts in control equipment (e.g. valve spools)
can, under certain circumstances, get blocked in posi-
tion as a result of contamination (e.g. impure hydraulic
fluid, abrasion, or residual dirt from components). As a
result, the flow of hydraulic fluid and the build-up of
torque in the axial piston unit can no longer respond
correctly to the operator’s specifications. Even the use
of various filter elements (external or internal flow filter)
will not rule out a fault but merely reduce the risk. The
machine/system manufacturer must test whether reme-
dial measures are needed on the machine for the appli-
cation concerned in order to set the consumer being
driven to a safe position (e.g. safe stop) and if necessary
to ensure it is properly implemented.