Bosch Rexroth | 4WS2EM6-2X2B12ET315K17EV
4WS2EM6-2X/2B12ET315K17EV
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The 4WS2EM6-2X/2B12ET315K17EV servo valve is manufactured by Bosch Rexroth as part of the 4WS Servo Valves series and meters hydraulic flow for position and force control in automated machinery. Its nominal size 6 (NG6) fits standard compact subplates, while the ISO 4401-03-02-0-05 porting pattern aligns pressure and tank ports for straightforward installation. A rated flow of 2 l/min at a 70 bar differential supports precise motion, and the unit can pass up to 48 l/min when higher speed is needed. Maximum operating pressure of 315 bar makes the valve suitable for high-pressure circuits. Negative spool overlap accelerates response near the command null. Each coil presents 85 Ω resistance so drive electronics can regulate current, and a 1 H inductance smooths current changes to stabilize spool movement.
The K17 electrical connector links the dual coils and maintains correct pin orientation, and with the mating plug attached the assembly reaches IP65 protection against dust and water jets. Internal pilot oil supply and return, identified as ET, remove the need for external pilot lines. Manifold sealing uses O-rings sized 9.81 × 1.5 × 1.78, and all elastomers are FKM to resist mineral oil and heat. The housing is secured by M5 × 40 mounting screws, and a torque of 7 Nm prevents distortion while holding the valve firmly. The valve weighs 1.12 kg, allowing technicians to handle and position it easily during assembly.
Technical Specifications
Coil Inductance (serial)
1 H
Coil Resistance (per Coil)
85 Ω
Electrical Connector
K17
Maximum Flow
48 l/min
Maximum Operating Pressure
315 bar
Mounting Screw Size
M5 × 40
Mounting Screw Torque
7 Nm
Nominal Size
6 (NG6)
Pilot Oil Supply/return
Internal (ET)
Port O-ring Size
9.81 × 1.5 × 1.78
Porting Pattern
ISO 4401-03-02-0-05
Protection Class
IP65 (with mated connector)
Rated Flow (Δp=70 Bar)
2 l/min
Seal Material
FKM
Spool Overlap Type
Negative (E)
Weight
1.12 kg
1620 Old Apex Road
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