Bosch Rexroth | 4WRKE25W8-350L-3X6EG24ETK31A1D3M
4WRKE25W8-350L-3X/6EG24ETK31/A1D3M
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The 4WRKE25W8-350L-3X/6EG24ETK31/A1D3M directional valve is produced by Bosch Rexroth for the 4WRKE Directional Valves series and regulates hydraulic motion in automated machinery. The valve accepts a ±10 V command and feedback signal so electronic controllers can position the spool proportionally. A supply voltage of 24 V DC powers the internal electronics and solenoids. Internal pilot oil supply simplifies installation by eliminating external feed lines, and internal pilot oil drain returns fluid directly into the main body. The pilot circuit tolerates pressures up to 315 bar, matching common high-pressure manifolds. An integrated pressure reducing valve type ZDR 6 DP0-4X/40YM-W80 stabilizes pilot pressure for consistent control behavior. The unit draws a maximum of 72 W, allowing compact power supplies in the control cabinet. A mounting pattern that follows ISO 4401-08-07-0-94 lets the valve bolt directly onto standard subplates.
The main stage delivers a nominal flow of 350 L/min to address medium-to-high volume circuits, and under full stroke it can pass up to 870 L/min for peak demands. Ports P, A, and B are rated for 350 bar operating pressure, enabling use with high-pressure pumps. NBR seals contain mineral oil within this pressure range, while the pressure fluid may reach 80 °C during continuous duty. Electrical connection is made through a DIN EN 175201-804 plug, providing a common interface for machine wiring. An IP65 ingress protection rating shields internal components from dust and low-pressure water jets when the connector is mated. The assembled valve weighs 16.8 kg, so mounting hardware must support that load during operation.
Technical Specifications
Command/actual Signal
±10 V
Connector Type
DIN EN 175201-804
Ingress Protection
IP65
Integrated Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Max Main Valve Flow
870 L/min
Max Operating Pressure (p, A, B)
350 bar
Mounting Pattern
ISO 4401-08-07-0-94
Nominal Flow
350 L/min
Pilot Oil Drain
Internal
Pilot Oil Supply
Internal
Pilot Oil Supply (max)
315 bar
Power (max)
72 W
Pressure Fluid Temperature (max)
80 °C
Seal Material
NBR
Supply Voltage
24 V DC
Weight
16.8 kg
1620 Old Apex Road
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