Bosch Rexroth | 4WSE2ED10-5X45B9ET315K31EV
4WSE2ED10-5X/45B9ET315K31EV
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The 4WSE2ED10-5X/45B9ET315K31EV servo valve belongs to the 4WS Servo Valves series and is manufactured by Bosch Rexroth for closed-loop hydraulic automation systems. It modulates flow and pressure to cylinders or motors, accepting a command signal of ±10 V to set the spool position while producing an actual value of ±10 V for feedback to the motion controller. A rated flow of 45 L/min at a 70 bar differential allows the valve to drive medium-sized actuators without external throttling. The main ports p, a, and b tolerate continuous pressures up to 315 bar so the unit can work in high-pressure circuits. Pilot oil is supplied and returned internally (ET), eliminating separate pilot lines and simplifying manifold design. The body follows the ISO 4401-05-05-0-05 porting pattern, enabling direct mounting on standard subplates. A mass of 3.65 kg supports straightforward handling during assembly.
Each electromagnetic stage draws a rated current of 30 mA through coils that present 85 Ω resistance, defining the drive amplifier sizing. Dynamic behavior is influenced by a series inductance of 1.0 H and a lower parallel inductance of 0.25 H which together shape current rise and spool movement. Electrical connection is provided by an EN 175201-804 (K31) plug, and field wiring is completed with the matching R900223890 connector to maintain pin compatibility. The enclosure reaches an IP65 protection class, guarding the coils against dust ingress and low-pressure water jets in industrial wash-down areas. Valve hysteresis remains at or below 0.8 %, supporting precise position control with minimal deadband. FKM seals withstand common hydraulic oils and elevated temperatures, preserving leak-tight operation over long service cycles.
Technical Specifications
Actual Value
±10 V
Coil Inductance (parallel)
0.25 H
Coil Inductance (series)
1.0 H
Coil Resistance
85 Ω
Command Value
±10 V
Electrical Connection
EN 175201-804 (K31)
Hysteresis
≤ 0.8%
Mating Connector P/n
R900223890
Operating Pressure (p,a,b)
315 bar
Pilot Oil Supply/return
Internal/Internal (ET)
Porting Pattern
ISO 4401-05-05-0-05
Protection Class
IP65
Rated Current Per Coil
30 mA
Rated Flow
45 l/min (Δp=70 bar)
Seals
FKM
Weight
3.65 kg
1620 Old Apex Road
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