Bosch Rexroth | 4WS2EM10-5X10B11ET315K31BV
4WS2EM10-5X/10B11ET315K31BV
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The 4WS2EM10-5X/10B11ET315K31BV is a servo valve produced by Bosch Rexroth within the 4WS Servo Valves series for closed-loop hydraulic automation. Its nominal size of 10 balances compact dimensions with enough flow capacity for medium power actuators. The valve meters 10 l/min at a 70 bar pressure drop, enabling precise speed control of cylinders and motors. Maximum operating pressure of 315 bar allows integration into high-pressure circuits without derating. Internal pilot oil supply and return simplify plumbing because no external pilot lines are needed. HL or HLP fluids according to DIN 51524 provide the necessary lubrication and rust protection for the spool and sleeve. A cleanliness class of ISO 4406 18/16/13 must be met to prevent wear and maintain directional accuracy. FKM seals support mineral oil service at elevated temperatures while the IP65 housing shields the valve surface from dust and water spray.
The electromagnetic stage uses a coil with 85 Ω resistance that draws 30 mA, producing stable magnet force while limiting heat rise. The modest power demand minimizes the load on drive amplifiers in distributed control cabinets. Connection to control electronics is through an EN 175201-804 plug, ensuring quick mating and secure polarity. The mechanical return system recenters the spool when the command signal is removed, providing fail-safe neutrality. An ISO 4401 porting pattern standardizes manifold mounting so the valve can replace earlier models without re-machining. Continuous operation is allowed at fluid temperatures up to 80 °C and ambient conditions up to 100 °C, supporting installations near heat sources. The 3.56 kg mass permits single-person handling during manifold assembly. This weight also aids vibration damping in high dynamic installations.
Technical Specifications
Cleanliness Class
ISO 4406 18/16/13
Coil Rated Current
30 mA
Coil Resistance
85 Ω
Electrical Connection
EN 175201-804
Hydraulic Fluid
HL, HLP (DIN 51524)
Max Ambient Temperature
100 °C
Max Fluid Temperature
80 °C
Max Operating Pressure
315 bar
Nominal Size
10
Pilot Oil Supply/return
Internal/Internal
Porting Pattern
ISO 4401
Protection Class
IP65
Rated Flow
10 l/min (Δp 70 bar)
Return System
Mechanical
Seal Material
FKM
Weight
3.56 kg
1620 Old Apex Road
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