Industrial Hydraulics

Proportional, high-response and servo-valves
Detailed information:
– Type 4WRL:
RE 29086 and RE 29087
– Type 4WRLE:
RE 29088 and RE 29089
Variant with OBE-D2 on
inquiry
1) at 100 bar
2) mounting cavity Ø50
Detailed information:
1987761104
Types 4WRL and 4WRLE
84 Industrial Hydraulics Bosch Rexroth AG
High-response valves, pilot operated, with electrical position feedback
< Sizes 10 to 35
< Porting pattern to DIN 24340 form A and ISO 4401
< Control of the direction and magnitude of a flow
< Use for closed-loop control of force, position, velocity and pressure
< RV-PL pilot control valve
< Pilot control valve and main stage are closed-loop position-controlled
< Modular system with different valve symbols
< Series with/without integrated electronics
< Characteristic curves with and without inflection
Size 10 16 25 35 2)
Operating pressure pmax bar 350 350 350 350
Nominal flow (∆p = 10 bar) qV nom L/min 55, 80 120, 200 370 1000
Maximum hysteresis 1) % 0.1 0.1 0.1 0.1
Frequency at -90 ° phase response f Hz 45 45 50 20
Operating voltage Unom V 24 24 24 24
Comm. value signal standard with OBE U V ± 10 ± 10 ± 10 ± 10
I mA 4 to 20 4 to 20 4 to 20 4 to 20
Control electronics Circuit board RD 30043, RD 30044, RD 30045
Proportional high-response valve with spool position monitoring
< Sizes 10 to 25
< Concept and design in accordance with the Machinery Directive
< Clear monitoring of all spool positions
Type 4WRLEM
Size 10 16 25
Operating pressure Port P, A, B pmax bar 315 350 350
Port T pmax bar 250 250 250
Nominal flow (∆p = 5 bar) qV nom L/min 50, 80 180 350
Maximum hysteresis % < 0.3 < 0.3 < 0.3
Step response 0 to 100 % Tu +Tg ms 40 80 80
Operating voltage U V 24 24 24