Bosch Rexroth | 4WRKE25W8-350L-3X6EG24K31A1D3M
4WRKE25W8-350L-3X/6EG24K31/A1D3M
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The 4WRKE25W8-350L-3X/6EG24K31/A1D3M valve belongs to the 4WRKE Directional Valves series from Bosch Rexroth. Designed for hydraulic automation, it meters flow and directs pressure to cylinders and motors under closed-loop electronic control. A linear characteristic curve allows predictable flow changes as the spool shifts, while a nominal flow of 350 L/min at a 10 bar differential suits medium-to-high throughput circuits. The assembly tolerates operating pressures up to 350 bar, so it can be installed in modern high-pressure systems without derating. Response sensitivity remains within 0.5 percent, and hysteresis is limited to 1 percent, supporting accurate position and velocity regulation. An analog ±10 V command/actual interface links the valve to motion controllers, and the 24 V DC supply voltage powers the integrated electronics without requiring a separate source.
The unit follows the ISO 4401-08-07-0-94 mounting pattern, enabling direct stacking on common subplates. A W8 spool provides defined metering edges for proportional control over flow paths, and this arrangement stabilizes performance across the full stroke. Electrical connection is made through a plug built to DIN EN 175201-804, so standard machine-wiring harnesses fit without adapters. Maximum electrical power draw is 72 W, informing cabinet fuse sizing and thermal calculations. Internal pilot oil supply eliminates an external feed line, whereas the external pilot oil drain prevents back-pressure from affecting the control stage. During transient events the body can pass up to 870 L/min, giving headroom over the nominal rating. Service staff should allow for a weight of 16.8 kg when mounting or removing the valve.
Technical Specifications
Characteristic Curve
Linear (L)
Command/actual Interface
±10 V
Connector Standard
DIN EN 175201-804
Hysteresis
≤ 1%
Max Operating Pressure (p, A, B)
350 bar
Mounting Pattern
ISO 4401-08-07-0-94
Nominal Flow
350 L/min (Δp 10 bar)
Permissible Flow (max)
870 L/min
Pilot Oil Drain
External
Pilot Oil Supply
Internal
Power (max)
72 W
Response Sensitivity
≤ 0.5%
Signal Type
Analogue
Spool Type
W8
Supply Voltage
24 V DC
Weight
16.8 kg
1620 Old Apex Road
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