Bosch Rexroth | 4WS2EM10-5X60B11ET315K31EV
4WS2EM10-5X/60B11ET315K31EV
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The 4WS2EM10-5X/60B11ET315K31EV servo valve belongs to the 4WS Servo Valves series produced by Bosch Rexroth for closed-loop hydraulic automation. It uses a 4-way design to meter flow to and from actuator ports while maintaining pressure equilibrium in complex motion profiles. A rated flow of 60 l/min at a 70 bar pressure drop defines its throughput for mid-size drives, and a maximum operating pressure of 315 bar allows service in high-pressure circuits. Size 10 mounting together with an ISO 4401-05-05-0-05 porting pattern positions the valve on standardized subplates. Two hydraulic stages amplify the input command signal so the main spool responds quickly, and a negative Type E spool overlap ensures high accuracy around the null position. Pilot oil is supplied and returned internally, eliminating external pilot lines and simplifying installation.
Valve actuation is achieved by two electromagnets that each draw a rated current of 30 mA through coils with a resistance of 85 Ω and a series inductance of 1.0 H, giving predictable electrical dynamics for servo controllers. The coils connect through an EN 175201-804 plug, and the assembly reaches an IP65 protection class when the mating connector is fitted, shielding the internal wiring against dust and low-pressure water. FKM seals keep hydraulic fluid contained at high temperature ranges, while a cleanliness requirement of ISO 4406 18/16/13 restricts particulate levels to protect the precision spool lands. The valve weighs 3.56 kg, so manifold support must accommodate this mass without strain.
Technical Specifications
Design
4-way
Electrical Connector
EN 175201-804
Fluid Cleanliness Class
ISO 4406 18/16/13
Inductance (series)
1.0 H
Max Operating Pressure
315 bar
Pilot Oil Supply/return
Internal/Internal
Porting Pattern
ISO 4401-05-05-0-05
Protection Class
IP65 (with mating connector)
Rated Current Per Coil
30 mA
Rated Flow
60 l/min (Delta p 70 bar)
Resistance Per Coil
85 Ω
Seals
FKM
Size
10
Spool Overlap
Negative (Type E)
Stages
2
Weight
3.56 kg
1620 Old Apex Road
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