Bosch Rexroth | 4WRKE25W6-350L-3X6EG24K31A5D3M
4WRKE25W6-350L-3X/6EG24K31/A5D3M
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The 4WRKE25W6-350L-3X/6EG24K31/A5D3M proportional directional valve belongs to the 4WRKE Directional Valves series and is produced by Bosch Rexroth for closed-loop hydraulic automation. It accepts a supply voltage of 24 V DC to energize its on-board electronics, while maximum power draw stays within 72 W so cabinet power sizing is straightforward. A ±10 V command value input allows the controller to set spool position proportionally, and a corresponding ±10 V measurement output returns actual position for feedback loops. The housing is sealed to IP65, enabling installation in areas exposed to dust or water jets. Connection to manifolds follows the ISO 4401-08-07-0-94 porting pattern, ensuring interchangeability with size-08 subplates. Flow metering is handled by a W6 spool whose linear characteristic provides predictable flow change over the control range.
The valve is rated for a nominal flow of 350 L/min at a pressure drop of 10 bar, matching high-throughput circuits that use nominal size 25 galleries. Ports p, a, and b tolerate operating pressure up to 350 bar, while the pilot drain channel withstands 250 bar to suit remote tank connections. Both pilot oil supply and pilot oil drain are external, allowing the main flow to remain unaffected by pilot conditions. During a 0 to 100 percent step at 315 bar the pilot stage consumes 11.7 L/min, data useful for pump sizing. Pressure stability of the pilot section is maintained by the integrated ZDR 6 DP0-4X/40YM-W80 pressure reducing valve, which keeps control pressures steady during dynamic spool movement.
Technical Specifications
Command Value Input
±10 V
Measurement Output
±10 V
Nominal Flow (Δp 10 Bar)
350 L/min
Nominal Size
25
Operating Pressure (p,a,b) Max
350 bar
Pilot Drain Pressure Max
250 bar
Pilot Oil Drain
External
Pilot Oil Flow (step 0–100% @ 315 Bar)
11.7 L/min
Pilot Oil Supply
External
Porting Pattern
ISO 4401-08-07-0-94
Power Consumption Max
72 W
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Protection Class
IP65
Spool Characteristic
Linear (L)
Spool Type
W6
Supply Voltage
24 V DC
1620 Old Apex Road
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