Bosch Rexroth | 4WRKE25W8-350L-3X6EG24EK31A1D3M
4WRKE25W8-350L-3X/6EG24EK31/A1D3M
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The 4WRKE25W8-350L-3X/6EG24EK31/A1D3M valve belongs to the 4WRKE Directional Valves series manufactured by Bosch Rexroth for closed-loop hydraulic automation. It accepts a ±10 V command input so a motion controller can drive the spool proportionally, and it supplies a ±10 V actual value output to confirm spool position in real time. The integrated electronics run on a 24 V DC supply; current draw peaks at 1.5 A and overall power consumption is limited to 72 W, which simplifies sizing of the machine power supply. Connection is made through a plug built to DIN EN 175201-804, guaranteeing compatibility with common industrial cables. An IP65 protection class shields the housing against dust ingress and low-pressure water, enabling installation near fluid power machinery. The nominal size of 25 defines the gallery diameters for medium-capacity manifolds, and the 16.8 kg mass must be supported by a rigid subplate to avoid vibration.
The hydraulic section tolerates 350 bar on the P, A, and B ports, allowing the valve to direct high-pressure flow safely. Nominal flow is 350 L/min for steady operation, while a maximum permissible flow of 870 L/min lets the unit handle short-term spikes without excessive pressure drop. Pilot oil is taken internally from the pressure port, and the drained pilot oil is routed externally so backpressure in the return line does not disturb control stability. The mounting face follows the ISO 4401-08-07-0-94 porting pattern, permitting straightforward interchange with other components using the same layout. A ZDR 6 DP0-4X/40YM-W80 pressure reducing valve is included to hold the pilot circuit at a constant level, maintaining accurate spool positioning when system pressure varies.
Technical Specifications
Actual Value Output
±10 V
Command Input
±10 V
Electrical Connector Standard
DIN EN 175201-804
Max Operating Pressure (p/a/b)
350 bar
Max Permissible Flow
870 L/min
Max Power
72 W
Max Supply Current
1.5 A
Nominal Flow
350 L/min
Nominal Size
25
Pilot Oil Drain
External
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-08-07-0-94
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Protection Class
IP65
Supply Voltage
24 V DC
Weight
16.8 kg
1620 Old Apex Road
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