Bosch Rexroth | 4WS2EM10-5X45B11ET315K31EV
4WS2EM10-5X/45B11ET315K31EV
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The 4WS2EM10-5X/45B11ET315K31EV is manufactured by Bosch Rexroth for the 4WS Servo Valves series and meters hydraulic flow to actuators in automated machinery. The valve size is 10, giving a porting capacity suited to medium-flow circuits, while a rated flow of 45 l/min at a 70 bar differential maintains consistent actuator speed. A maximum operating pressure of 315 bar lets the unit work on high-pressure lines without external reducers. Installation is simplified by the ISO 4401-05-05-0-05 mounting pattern, and internal pilot supply and return remove the need for separate pilot plumbing. An IP65 protection class keeps the electrical section sealed against dust and low-pressure water jets. FKM sealing material resists common hydraulic fluids and limits leakage. Required fluid cleanliness is ISO 4406 class 18/16/13 to minimize spool wear and preserve flow accuracy.
The coil draws a rated current of 30 mA, limiting heat during continuous duty, and its resistance is 85 Ω to match standard servo amplifiers. Parallel inductance of 0.25 H and series inductance of 1.0 H define electrical response, helping drive electronics achieve stable control. Connection is made through an EN 175201-804 coded K31 plug that provides positive alignment and environmental sealing. Hysteresis is kept to ≤ 1.5 %, so commanded positions are reached with minimal deadband. Port Y can accept 10 bar static pressure, allowing moderate backpressure in the drain line without influencing null bias. The assembly weighs 3.56 kg, so it can mount directly on a manifold without extra support. These coil, connector, and port characteristics support precise motion control in hydraulic presses, machine tools, and other closed-loop systems.
Technical Specifications
Coil Rated Current
30 mA
Coil Resistance
85 Ω
Electrical Connection
EN 175201-804 (K31)
Fluid Cleanliness
ISO 4406 Class 18/16/13
Hysteresis
≤ 1.5 %
Inductance (parallel)
0.25 H
Inductance (series)
1.0 H
Max Operating Pressure
315 bar
Mounting Pattern
ISO 4401-05-05-0-05
Pilot Supply/return
Internal/Internal
Port Y Static Pressure
10 bar
Protection Class
IP65
Rated Flow (Δp=70 Bar)
45 l/min
Sealing Material
FKM
Valve Size
10
Weight
3.56 kg
1620 Old Apex Road
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