Bosch Rexroth | 4WS2EM10-5X10B11ET315K8DV
4WS2EM10-5X/10B11ET315K8DV
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The 4WS2EM10-5X/10B11ET315K8DV servo valve is produced by Bosch Rexroth within the 4WS Servo Valves series and meters hydraulic flow for closed-loop automation. It uses two stages to amplify electrical commands into spool movement for precise port modulation. A rated flow of 10 l/min supports moderate actuator demands, and the 70 bar reference pressure drop defines the test condition for that flow. The valve tolerates system pressures up to 315 bar, so it can be mounted in high-pressure circuits. The ISO 4401-05-05-0-05 mounting pattern matches standard subplates, while internal pilot oil supply and return eliminate external pilot lines. An IP65 protection class with the connector fitted shields the enclosure from dust and water jets, and the complete assembly weighs 3.56 kg, affecting manifold support requirements.
Each solenoid presents a parallel inductance of 0.25 H, which moderates current rise for stable dynamic response, and a coil resistance of 85 Ω that limits current draw. The coils accept a rated current of 30 mA, allowing low-power control electronics to drive the valve. A mechanical return system recenters the spool when the command signal is removed, establishing a fail-safe neutral. To maintain long service life, the hydraulic fluid must meet ISO 4406 18/16/13 cleanliness. Return paths are constrained to 10 bar static pressure at both the T and Y ports to avoid backpressure-induced drift. Electrical termination is made through a plug built to EN 175201-804, ensuring compatibility with standard field wiring.
Technical Specifications
Coil Inductance (parallel)
0.25 H
Coil Resistance Per Coil
85 Ω
Hydraulic Fluid Cleanliness
ISO 4406 18/16/13
Mating Connector Standard
EN 175201-804
Max Operating Pressure (p, A, B)
315 bar
Mounting Pattern
ISO 4401-05-05-0-05
Pilot Oil Supply/return
Internal/Internal
Port T Static Pressure (internal Return)
10 bar
Port Y Static Pressure
10 bar
Protection Class (with Connector)
IP65
Rated Coil Current Per Coil
30 mA
Rated Flow
10 l/min
Rated Flow Pressure Differential
70 bar
Return System
Mechanical
Valve Stages
2
Weight
3.56 kg
1620 Old Apex Road
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