RE18152/2022-01-28, BoschRexroth AG
Contents
RE18152/2022-01-28
Replaces: 12.2016
HAD7893
▶ Size 1
▶ Series A
▶ Maximum working pressure 420bar
▶ Maximum flow 80l/min
Features
▶ Cartridge valve
▶ R/UNF10-01-0-06 mounting cavity
▶ Pilot operated proportional valve for limiting system
pressure
▶ Suitable for mobile and industrial applications
▶ Actuated by proportional solenoid with central thread
and removable coil
▶ Rotatable solenoid coil
▶ In case of power failure, maximum pressure is set
▶ Setpoint value pressure characteristic curve can be
finely calibrated using control electronics externally
Proportional pressure relief valve,
pilot operated, decreasing characteristic curve
KBVS.1B
Type code 2
Preferred types 2
Available coils (order separately) 2
Functional description 3
Technical data 4
Characteristic curves 7
Permissible working range 8
Dimensions 10
Mounting cavity 11
Available individual components 12
Related documentation 12
BoschRexrothAG, RE18152/2022-01-28
2 KBVS.1B | Proportional pressure relief valve
Type code (valve without coil)1)
Type code (valve without coil)
1)
01 02 03 04 05 06 07 08
KBVS 1 B A / F V *
Valve type
01 Proportional pressure relief valve, pilot operated KBVS
Pressure stage
02 Up to 50bar C
Up to 100bar F
Up to 150bar H
Up to 210bar L
Up to 250 bar N
Up to 315 bar P
Up to 350 bar R
Up to 420bar T
03 Size 1 1
04 If setpoint value = 0, maximum pressure is set B
05 Series A
06 High Performance and R/UNF-10-01-0-06 mounting cavity (seepage11) F
Sealing material
07 FKM (fluorocarbon rubber), other seals on request V
08 Further details in plain text *
Preferred types (valve without coil)
1)
Type Material number
KBVSC1BA/FV R901325098
KBVSF1BA/FV R901325099
KBVSH1BA/FV R901325102
KBVSL1BA/FV R901325105
Type Material number
KBVSN1BA/FV R901325107
KBVSP1BA/FV R901325109
KBVSR1BA/FV R901325111
KBVST1BA/FV R901325112
1) Complete valves with mounted coil on request.
2) Plug-in connectors are not included in the scope of delivery and
must be ordered separately, seedatasheet08006.
3) Additional voltages available on request.
Available coils (order separately)
Material number for coil with device connector
2)
DC voltage
3)
"K4"
03pol (2+PE)
DINEN175301-803
"K40"
02pol K40
DT 04-2PA, Fa. DEUTSCH
"C4"
02pol C4/Z30
AMPJuniorTimer
12 V R901002932 R901003055 R901003044
24V/1200mA R901002319 R901003053 R901003026
24V/800mA R901049962 R901050010 R901049963
RE18152/2022-01-28, BoschRexrothAG
3 Proportional pressure relief valve | KBVS.1B
Functional description
Functional description
General
Valves of type KBVS are pilot operated proportional
pressure relief valves of spool design and are used to
limit the pressure in hydraulic systems. Their primary
components are ascrew-in proportional pilot
control valve (1) and the main valve (2).
These valves can be used for infinitely adjusting the
pressure to be limited depending on the setpoint value.
Maximum pressure is set in case of power failure or
if the setpoint value is 0.
Basic principle
The valves come preset at maximum mechanical pressure.
To proportionally decrease the system pressure, asetpoint
value is specified using the control electronics.
Depending on this setpoint value, the electronics power
the solenoid coil, which uses the pilot control valve (1)
and main valve (2) to actually set the pressure at portP.
(p
max
= setpoint value of 0; p
min
= maximum setpoint)
Notice
Occurring tank pressures (portT) are added to the set
value at portP.
▼ Type KBVS.1B..
1
2
T
P
Device connector
"K4"
Device connector
"C4"
Device connector"K40"
(with plug-in connector)
T
P
P=Pump port
T=Tank port
BoschRexrothAG, RE18152/2022-01-28
4 KBVS.1B | Proportional pressure relief valve
Technical data
Technical data
General
Weight kg 0.75
Installation position Any - if it is ensured that no air can collect upstream the valve.
Otherwise we recommend suspend installation of the valve.
Ambient temperature range °C –40 to +120 (seepages8 and 9)
Storage temperature °C –20 to +80
Environmental testing
Vibration test in accordance with DINEN60068-2/IEC60068-2/two axes(X/Y)
DINEN60068-2-6: 05/96 Sinusoidal vibration 10 cycles (5Hz to 2000Hz back to 5Hz) with logarithmic sweep
rate of 1oct/min, 5 to 57Hz, amplitude 1.6mm (p–p), 57 to
2000Hz, amplitude 10g
IEC60068-2-64: 05/93 Vibration (random) and
broadband noise
20 to 2000Hz, amplitude 0.1g
2
/Hz (14g RMS/30g peak),
testing time 24h
DINEN60068-2-27: 03/95 Shock
Half sine 15g/11ms;
3× in positive, 3× in negative direction
(6 single shocks total)
DINEN60068-2-29: 03/95 Continuous shock
Half sine 15g/11ms;
1000× in positive, 1000× in negative direction
(2000 single shocks total)
Indication per axis
Climate test in accordance with DIN/EN60068-2/IEC60068-2 (environmental audit)
DINEN60068-2-1: 03/95 Storage temperature –40°C, dwell time 16h
DINEN60068-2-2: 08/94 +110°C, dwell time 16h
DINEN60068-2-1: 03/95 Cold test 2 cycles, -25°C, dwell time 2h
DINEN60068-2-2: 08/94 Dry heat test 2 cycles, +120°C, dwell time 2h
IEC60068-2-30: 1985 Humid heat, cyclical Variant 2/ +25°C to +55°C
93% to 97% RH, 2 cycles of 24h
Salt spray test in accordance with DIN50021 h 720
→ Varnishing generally not necessary. If varnishing, note reduced radiation output.
Notice
For applications outside these values, please consult us!
RE18152/2022-01-28, BoschRexrothAG
5 Proportional pressure relief valve | KBVS.1B
Technical data
Hydraulic
Maximum working pressure
1)
PortP bar 420
Maximum return flow pressure PortT bar 210
Maximum set pressure
2)
See setpoint value pressure characteristic curve on page7
Minimum set pressure at maximum setpoint value See characteristic curve on page7
Maximum flow l/min 80
Leakage ml/min < 200 (at ∆p = 250bar; closed pilot control valve and HLP46,
ϑ
oil
= 40°C)
Hydraulic fluid See table below
Hydraulic fluid temperature range °C –40 to +80
Viscosity range mm
2
/s 5 to 400 (preferably 10 to 100)
Maximum admissible degree of contamination of hydraulic fluid
Cleanliness level per ISO4406 (c)
Class 20/18/15
3)
Load cycles 10 mil.
Hysteresis
4)
<4% of maximum set pressure
Turnover voltage
4)
<0.5% of maximum set pressure
Responsiveness
4)
<0.5% of maximum set pressure
Setpoint pressure characteristic
curve tolerance
Setpoint value 100% <2% of maximum set pressure
Setpoint value 0 <5% of maximum set pressure
Step response (T
u
+ T
g
)
0→ 100% or 100%→ 0
ms 100 (depending on system)
Hydraulic fluid
Hydraulic fluid Classification Suitable
sealing materials
Standards Data sheet
Mineral oils HL, HLP FKM DIN 51524 90220
Environmentally
acceptable
Insoluble in water HEES FKM ISO15380 90221
Soluble in water HEPG FKM ISO15380 90221
Notice
▶ Further information and details on using other
hydraulic fluids are available in the above
datasheets or on request.
▶ Restrictions are possible with the technical valve data
(temperature, pressure range, service life,
maintenance intervals, etc.)!
▶ The flash point of the hydraulic fluid used must be
40K above the maximum solenoid surface
temperature.
▶ Environmentally acceptable: If environmentally
acceptable hydraulic fluids are used that are also
zinc-solving, there may be an accumulation of zinc.
1) The maximum working pressure is the aggregate of set pressure
and return flow pressure!
2) The valves come preset. Changing the settings voids the warranty.
3) Cleanliness levels specified for the components must be
maintained in the hydraulic systems. Effective filtration prevents
malfunctions and simultaneously extends the service life of the
components.
4) Measured with analog amplifier of type RA2-1/10,
see datasheet95230 (PWM=200Hz).
BoschRexrothAG, RE18152/2022-01-28
6 KBVS.1B | Proportional pressure relief valve
Technical data
Electric
Voltage type DC voltage
Supply voltage V 12DC 24DC "–8"/24DC
Maximum solenoid current mA 1760 1200 800
Coil resistance Cold value at 20°C Ω 2.3 4.8 11.5
Maximum warm value Ω 3.8 7.9 18.9
Duty cycle % See characteristic curve on pages 8 and 9
5)
Maximum coil temperature
6)
°C 150
Type of protection according to
ISO20653
Connector version "K4" IP6K5
7)
Connector version "C4" IP6K6K
7)
IP6K9K
7)
(only with Rexroth typeR901022127)
Connector version "K40" IP6K7 and IP6K9K
7)
Control electronics (separate order) Proportional amplifier type VT-SSPA1, datasheet30116
Proportional amplifier type VT-MSPA, datasheet30232
Analog amplifier type RA, datasheet95230
BODAS controller type RC, datasheets95204,95205,95206
Recommended dither frequency (PMW) Hz 200
Design according to VDE0580
Notice
For the electrical connection, aprotective earth (PE
)
connection is mandatory based on the specification.
5) Consult the manufacturer if planning to use>2000m
above sea level.
6) Due to the occurring surface temperatures of the solenoid coils,
the standards ISO13732-1 and ISO4413 must be observed!
7) With installed and locked plug-in connector. Plug-in connectors
are not included in the scope of delivery and must be ordered
separately, seedatasheet08006.
RE18152/2022-01-28, BoschRexrothAG
7 Proportional pressure relief valve | KBVS.1B
Characteristic curves
Characteristic curves
p-q
V
flow characteristic curves
▼ Pressure at portP depending on flow
(The characteristic curves were measured without
back-pressure at portT)
0 10 20 30 40 50 60 70 80
0
50
100
150
200
250
300
350
400
450
500
Flow q
V
[l/min]
Pressure at portP [bar]
▼ Minimum set pressure p
E
at portP depending on flow at
setpoint value100%
(The characteristic curve was measured without
back-pressure at portT)
Flow q
V
[l/min]
Minimum set pressure
p
E
[bar]
0
5
10
15
20
0 10 20 30 40 50 60 70 80
p-I characteristic curves
▼ Pressure at portP depending on the setpoint value
(Flow = 10l/min)
0
50
100
150
200
250
300
350
400
450
500
0 20 3010 5040 80 9060 70 100
Setpoint value [%]
Pressure at portP [bar]
BoschRexrothAG, RE18152/2022-01-28
8 KBVS.1B | Proportional pressure relief valve
Permissible working range
Permissible working range
Minimum terminal voltage on the coil and relative duty cycle depending on the ambient temperature
▼ Version "G12"
-40
3
4
3.5
4.5
5.5
6.5
5
6
7
75
85
80
90
100
110
95
105
115
1.45
1.55
1.5
1.6
1.7
1.8
1.65
1.75
1.85
0-20 4020
1
2
3
8060 120100
Ambient temperature[°C]
Minimum required voltage
on the coil (1) →
Reduced duty cycle
for I
max
(1.76A) [%] (2)→
Permissible continuous power supply [A]
at 100 % duty cycle (3) →
▼ Version "G24"
-40
4
5
7
9
6
8
10
75
85
80
90
100
95
105
1
1.05
1.1
1.2
1.15
1.25
1.3
0-20 4020
1
2
3
8060 120100
Ambient temperature[°C]
Minimum required voltage
on the coil (1) →
Reduced duty cycle
for I
max
(1.2A) [%] (2)→
Permissible continuous power supply [A]
at 100 % duty cycle (3) →
= Limited valve performance
Notice
The characteristic curves were determined for coils with
valve for medium test block size (80 x 80 x 80mm),
w/o flow in still air.
Depending on installation conditions (block size,
flow, air circulation, etc.), heat dissipation may be
better. This increases the range of applications.
In specific instances, unfavorable conditions may limit
the range of applications.
RE18152/2022-01-28, BoschRexrothAG
9 Proportional pressure relief valve | KBVS.1B
Permissible working range
▼ Version "G24..-8"
-40
4
6
8
16
10
12
14
75
85
80
90
100
95
105
0.65
0.7
0.75
0.85
0.8
0.9
0.95
0-20 4020
1
2
3
8060 120100
Ambient temperature[°C]
Minimum required voltage
on the coil (1) →
Reduced duty cycle
for I
max
(0.8 A) [%] (2) →
Permissible continuous power supply [A]
at 100 % duty cycle (3) →
= Limited valve performance
Notice
The characteristic curves were determined for coils with
valve for medium test block size (80 x 80 x 80mm),
w/o flow in still air.
Depending on installation conditions (block size,
flow, air circulation, etc.), heat dissipation may be
better. This increases the range of applications.
In specific instances, unfavorable conditions may limit
the range of applications.
BoschRexrothAG, RE18152/2022-01-28
10 KBVS.1B | Proportional pressure relief valve
Dimensions
Dimensions [mm]
Dimensions
▼ KBVS.1B
~64
15 84
55
⌀37
⌀30
⌀17
50
~98
90
33
114.8
0
3 3
1
6
5
7
2
P
T
4
LS
1 Nut, tightening torque M
A
=5+1Nm
2 SW24, tightening torque M
A
=55+5Nm
3 Plug-in connectors, separate order, see datasheet08006
4 Space required to remove the plug-in connector
5 Device connector"K40"
6 Device connector"K4"
7 Device connector"C4"
P=Pump port
T=Tank port
LS = location shoulder
RE18152/2022-01-28, BoschRexrothAG
11 Proportional pressure relief valve | KBVS.1B
Mounting cavity
Dimensions [mm]
Mounting cavity
▼ R/UNF-10-01-0-06; 2 main ports; thread 7/8-14UNF-2B
0
min. ⌀30
max. ⌀15
⌀23.95±0.05
7/8-14UNF-2B
Ø15.87+0.05
E
max. 23.6
min. 12.3
1±0.5
33.3+0.5
2.5+0.4
25.3+0.4
23.7+0.4
16+1
30°-2°
45°±5°
15°±1°
R0.1±0.1
max. R0.4
P
T
LS
Rz max 8
⌀0.05 A
A
0.01
⌀0.05 A B
Rz1 8
X
Y
B
“X”“Y”
0.008-/Pt 20
Rz 32
+0.2-0.2
1)
0.1 A B
c
Rz1max 8
P=Pump port
T=Tank port
LS = location shoulder
BoschRexrothAG, RE18152/2022-01-28
BoschRexrothAG
Zum Eisengießer 1
97816 Lohr am Main
Germany
Phone +49 9352 18-0
info.ma@boschrexroth.de
www.boschrexroth.com
©BoschRexrothAG2022. All rights reserved, also regarding any disposal,
exploitation, reproduction, editing, distribution, as well as in the event of
applications for industrial property rights. The data specified within only
serves todescribe the product. No statements concerning acertain
condition or suitability for acertain application can be derived from our
information. The information given does not release the user from the
obligation of own judgment and verification. It must be remembered that our
products are subject to anatural process of wear and aging.
12 KBVS.1B A | Proportional pressure relief valve
Available individual components
Available individual components
990
998
Item Denomination DC voltage Material number
Coil for single connection
1)
K4 12 V
24V/1200mA
24V/800mA
R901002932
R901002319
R901049962
K40 12 V
24V/1200mA
24V/800mA
R901003055
R901003053
R901050010
C4 12 V
24V/1200mA
24V/800mA
R901003044
R901003026
R901049963
990 Nut and seal ring for pole tube R961010456
998 Seal kit of the valve R961006735
1) Replacing the solenoid coil may result in achange of ±5% in the factory pressure setting.
Related documentation
▶ Control electronics:
– Valve amplifiers for proportional valves TypeVT-SSPA1 Datasheet30116
– Valve amplifiers for proportional valves TypeVT-MSPA Datasheet30232
(Top hat rail installation)
– Analog amplifier TypeRA Datasheet95230
– BODAS controller TypeRC Datasheets95204, 95205, 95206
▶ Mineral oil-based hydraulic fluids Data sheet 90220
▶ Environmentally acceptable hydraulic fluids Data sheet 90221
▶ MTTF
D
values Data sheet 90294