Bosch Rexroth | 4WS2EM10-5X20B11ET315K8BV
4WS2EM10-5X/20B11ET315K8BV
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The 4WS2EM10-5X/20B11ET315K8BV servo valve belongs to the 4WS Servo Valves series produced by Bosch Rexroth for closed-loop hydraulic automation. It accepts an analog command signal so proportional spool position can map directly to flow demand. Each control coil requires a rated current of 30 mA, while its resistance of 85 Ω and inductance of 1.0 H define the electrical time constant used by the drive electronics. Under these conditions the valve meters a rated flow of 20 l/min at a differential pressure of 70 bar, matching medium-size actuator circuits. The subplate mounting interface and ISO 4401-05-05-0-05 porting pattern streamline manifold installation, and the pilot oil is supplied and returned internally to avoid external lines.
For system safety, the inlet pressure rating is 315 bar, and the P, A, and B ports are permitted a maximum operating pressure of 315 bar, allowing the valve to handle high-pressure servo loops. Hydraulic media must stay within cleanliness class 18/16/13 per ISO 4406 to protect the precision edges, and fluid sealing is maintained by FKM elastomers. Electrical hookup is completed through a connector built to EN 175201-804, and the enclosure carries an IP65 protection class to block dust and water jets. A mechanical return system centers the spool when commands are removed, while an overall mass of 3.56 kg supports rigid mounting without heavy brackets.
Technical Specifications
Coil Inductance (series)
1.0 H
Coil Resistance
85 Ω
Fluid Cleanliness Class
18/16/13 (ISO 4406)
Inlet Pressure Rating
315 bar
Mating Connector Standard
EN 175201-804
Max Operating Pressure (p, A, B)
315 bar
Mounting Type
Subplate
Pilot Oil Supply/return
Internal/Internal
Porting Pattern
ISO 4401-05-05-0-05
Protection Class
IP65
Rated Current Per Coil
30 mA
Rated Flow
20 l/min (Δp 70 bar)
Return System
Mechanical
Seal Material
FKM
Signal Type
Analog
Weight
3.56 kg
1620 Old Apex Road
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