Bosch Rexroth | 4WS2EM10-5X10B11ET315K31DV
4WS2EM10-5X/10B11ET315K31DV
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The 4WS2EM10-5X/10B11ET315K31DV is a servo valve manufactured by Bosch Rexroth within the 4WS Servo Valves series, intended to meter hydraulic flow in closed-loop automation systems. It is built in valve size 10, giving passage dimensions suited to mid-range machine axes. A rated flow of 10 l/min at a 70 bar pressure drop defines the speed that can be imposed on connected cylinders. The ISO 4401-05-05-0-05 porting pattern lets the body mount directly on standard CETOP 5 manifolds. Each coil is driven at a rated 30 mA, and a resistance of 85 Ω establishes the supply voltage required from the amplifier. A parallel inductance of 0.25 H cushions current changes to stabilize spool position. Coil number 11 identifies the winding design used for service interchangeability, while the K31 connector to EN 175201-804 provides a sealed electrical interface.
The assembly withstands operating pressures up to 315 bar so it can control high-force hydraulic circuits. Pilot oil supply and return are both internal, eliminating external pilot lines and simplifying installation. A mechanical return system recenters the spool when the control signal is removed. FKM seals are fitted to tolerate mineral and water-glycol media, and the valve is approved for HL, HLP, and HFC fluids. Fluid cleanliness must be held at ISO 4406 18/16/13 to protect the precision metering edges. An IP65 enclosure rating shields the coils and connector from dust ingress and water jets encountered in machinery environments. The complete unit weighs 3.56 kg, allowing compact mounting on densely packed actuator stations.
Technical Specifications
Coil Inductance (parallel)
0.25 H
Coil Number
11
Electrical Connection
K31 (EN 175201-804)
Fluid Cleanliness
ISO 4406 18/16/13
Hydraulic Fluids
HL, HLP; HFC
Ip Rating
IP65
Max Operating Pressure
315 bar
Pilot Oil Supply/return
Internal/Internal
Porting Pattern
ISO 4401-05-05-0-05
Rated Current Per Coil
30 mA
Rated Flow
10 l/min (Δp 70 bar)
Resistance Per Coil
85 Ω
Return System
Mechanical (M)
Seal Material
FKM (V)
Valve Size
10
Weight
3.56 kg
1620 Old Apex Road
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