Bosch Rexroth | 4WS2EM10-5X20B11ET315K31EV
4WS2EM10-5X/20B11ET315K31EV
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The 4WS2EM10-5X/20B11ET315K31EV belongs to the 4WS Servo Valves series from Bosch Rexroth and regulates hydraulic cylinder or motor position in closed-loop automation circuits. It is built as a 2-stage 4-way servo valve that meters flow proportionally to an analog input, allowing precise actuation of machine axes. The unit is furnished in size 10 and bolts to manifolds with the ISO 4401-05-05-0-05 interface, so it can replace earlier components without drilling new ports. Rated flow reaches 20 l/min at a 70 bar pressure drop, while the maximum operating pressure of 315 bar lets the valve handle high-force systems. Pilot oil is supplied and returned internally, which removes the need for external pilot lines. A mechanical return system centers the spool when the coils are de-energized, and the enclosure meets IP65 to resist dust and low-pressure water.
Each electromagnetic stage is wired through an EN 175201-804 (K31) connector; the coils draw 30 mA apiece and present 85 Ω resistance, while inductance is 0.25 H when they are connected in parallel. Fluid cleanliness must be maintained at 18/16/13 per ISO 4406 to preserve the fine clearances of the pilot and main spools. All dynamic seals are made from FKM to withstand common hydraulic oils and elevated temperatures. The overall weight of 3.56 kg supports straightforward handling during installation and service.
Technical Specifications
Cleanliness Class
18/16/13 (ISO 4406)
Coil Inductance (parallel)
0.25 H
Coil Resistance Per Coil
85 Ω
Design
2-Stage 4-Way Servo Valve
Electrical Connection
EN 175201-804 (K31)
Maximum Operating Pressure
315 bar
Mounting Interface
ISO 4401-05-05-0-05
Pilot Oil Supply/return
Internal/Internal
Protection Class
IP65
Rated Current Per Coil
30 mA
Rated Flow (Δp=70 Bar)
20 l/min
Return System
Mechanical
Seal Material
FKM
Signal Type
Analog
Size
10
Weight
3.56 kg
1620 Old Apex Road
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