Bosch Rexroth | 4WSE2ED10-5X20B9ET315K31EV
4WSE2ED10-5X/20B9ET315K31EV
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The 4WSE2ED10-5X/20B9ET315K31EV servo valve belongs to the 4WS Servo Valves series and is produced by Bosch Rexroth for precise hydraulic automation. The ISO 4401-05-05-0-05 mounting pattern lets the body bolt directly to standard subplates, eliminating adapter blocks. A maximum operating pressure of 315 bar enables use in high-pressure lines. With a 70-bar differential the spool delivers a rated flow of 20 l/min, and a ±10 % flow tolerance keeps circuit output predictable. The electronics present an input impedance of at least 50 kΩ, preventing signal loading, while a symmetrical ±10 V command range governs bidirectional actuation. A regulated ±15 V supply within ±3 % supports the amplifier and limits current draw to 150 mA through the EN 175201-804 (K31) connector, simplifying power distribution.
The internal pilot supply and return arrangement removes external pilot hoses and reduces leakage paths. Response sensitivity of 0.1 % lets the valve follow minute command changes, and dither-optimized hysteresis below 0.8 % minimizes deadband during reversals. An integral LVDT provides a ±10 V spool position output so the controller can close the loop without extra sensors. The system requires oil cleanliness of ISO 4406 18/16/13 to prevent silting at metering edges, and FKM seals withstand common hydraulic fluids while retaining elasticity under temperature cycling. Overall weight is 3.65 kg, allowing easy handling during installation. These features combine to maintain stable flow regulation and position accuracy during continuous duty cycles.
Technical Specifications
Command Input Signal
±10 V
Current Consumption (max)
150 mA
Electrical Connector
EN 175201-804 (K31)
Fluid Cleanliness
ISO 4406 Class 18/16/13
Hysteresis (dither-optimized)
≤ 0.8%
Input Impedance (voltage Ctrl)
≥ 50 kΩ
Mounting Pattern
ISO 4401-05-05-0-05
Operating Pressure (p/a/b Max)
315 bar
Pilot Supply/return
Internal/Internal (ET)
Rated Flow (Δp=70 Bar)
20 l/min
Rated Flow Tolerance
±10%
Response Sensitivity
≤ 0.1%
Seals
FKM (V)
Spool Position Output
±10 V
Supply Voltage
±15 V ±3%
Weight
3.65 kg
1620 Old Apex Road
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