Bosch Rexroth | 4WS2EM10-5X45B11ET315K31AV
4WS2EM10-5X/45B11ET315K31AV
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The 4WS2EM10-5X/45B11ET315K31AV servo valve is manufactured by Bosch Rexroth and belongs to the 4WS Servo Valves series. It meters hydraulic flow for closed-loop motion control in automated machinery. The unit delivers a rated flow of 45 l/min when there is a 70 bar pressure differential across the metering lands, allowing accurate actuator speed regulation. A maximum operating pressure of 315 bar permits use in high-pressure circuits typical of presses or injection molding machines. The valve follows the ISO 4401-05-05-0-05 porting pattern so it can mount directly on standardized subplates, and both pilot supply and return are internal, which eliminates external pilot lines. System cleanliness must reach ISO 4406 18/16/13 to protect the precision spool from contamination. An analog command signal drives the metering elements, and the assembly weighs 3.56 kg, making it manageable for manifold installation.
Each proportional coil is designed for a continuous current of 30 mA and has a resistance of 85 Ω, establishing the electrical load for the control amplifier. When the coils are wired in parallel the inductance is 0.25 H, while series wiring raises inductance to 1.0 H, values that influence drive bandwidth and dither tuning. The K31 plug to EN 175201-804 provides the electrical connection and supports quick replacement without rewiring. An IP65 protection class shields the housing against dust and water jets during plant wash-down. The mechanical return system recenters the spool when power is removed, ensuring fail-safe neutral. Fluid is sealed by FKM elastomers to withstand common hydraulic oils and elevated temperatures.
Technical Specifications
Cleanliness Class
ISO 4406 18/16/13
Coil Inductance (parallel)
0.25 H
Coil Inductance (series)
1.0 H
Electrical Connection
K31 (EN 175201-804)
Maximum Operating Pressure
315 bar
Pilot Supply/return
Internal/Internal
Porting Pattern
ISO 4401-05-05-0-05
Protection Class
IP65
Rated Current Per Coil
30 mA
Rated Flow
45 l/min
Rated Flow Pressure Differential
70 bar
Resistance Per Coil
85 Ω
Return System
Mechanical
Seal Material
FKM
Signal Type
Analog
Weight
3.56 kg
1620 Old Apex Road
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