Bosch Rexroth | 4WS2EM10-5X75B11ET315K31EV
4WS2EM10-5X/75B11ET315K31EV
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The 4WS2EM10-5X/75B11ET315K31EV servo valve is part of the 4WS Servo Valves series from Bosch Rexroth and is used to control flow and pressure in hydraulic automation systems. It meters 75 l/min at a differential pressure of 70 bar, and this flow is kept within a ±10 % tolerance for repeatable actuator motion. The valve handles circuit pressures up to 315 bar, letting designers place it in high-pressure manifolds. A porting pattern of ISO 4401-05-05-0-05 allows drop-in installation on size 05 subplates. The pilot stage uses internal supply and return, eliminating external lines and simplifying plumbing. Hydraulic oil must meet ISO 4406 cleanliness class 18/16/13 to prevent spool erosion. Acceptable fluid temperature extends from –15 °C to +80 °C, covering cold-start situations and elevated reservoir conditions.
Each electromagnetic stage draws a rated 30 mA through coils that present 85 Ω resistance, providing accurate spool positioning with modest power demand. Dynamic behavior is influenced by a series inductance of 1.0 H and a parallel inductance of 0.25 H, so drive electronics can tune current ramps without instability. The coils are wired through an EN 175201-804 connector, and with this plug installed the housing meets the IP65 protection rating, guarding internal parts against dust and low-pressure water jets. FKM seals isolate the hydraulic medium and tolerate the specified temperature range. The assembly weighs 3.56 kg, enabling direct manifold mounting without additional structural support.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 18/16/13
Coil Resistance
85 Ω
Electrical Connector
EN 175201-804
Inductance (parallel)
0.25 H
Inductance (series)
1.0 H
Max Fluid Temperature
+80 °C
Max Operating Pressure
315 bar
Min Fluid Temperature
–15 °C
Pilot Oil Configuration
Internal Supply/Return
Porting Pattern
ISO 4401-05-05-0-05
Protection Class
IP65 (with connector)
Rated Current Per Coil
30 mA
Rated Flow
75 l/min (Δp = 70 bar)
Rated Flow Tolerance
±10 %
Seal Material
FKM
Weight
3.56 kg
1620 Old Apex Road
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