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The 4WRKE25E1-350P-3X/6EG24K31/A5D3M valve is produced by Bosch Rexroth within the 4WRKE Directional Valves series and is intended to meter flow and direct pressure in hydraulic automation. It mounts with nominal size 25, fixing the interface dimensions for manifolds and stack systems, and follows the ISO 4401-08-07-0-94 porting pattern so it bolts onto standard subplates. A ±10 V command and feedback signal enables analog proportional control from motion controllers, while a 24 V DC supply powers the onboard electronics. Average electrical consumption is 24 W to limit continuous cabinet loading, though peak demand can reach 72 W during rapid spool shifts. Wiring is completed through a DIN EN 175201-804 connector coded K31, providing a common plug across Rexroth components. The assembly withstands operating pressures up to 350 bar, allowing use in high-force presses and molding equipment, and its 16.8 kg mass keeps the body stable under these conditions.
With a 10 bar pressure drop the valve delivers a nominal flow of 350 L/min, and the main stage can pass up to 870 L/min for fast movement of large actuators. External pilot oil supply isolates the control stage from load pressure, while an external pilot oil drain prevents back-pressure on the return side. The pilot circuit draws 11.7 L/min at 315 bar so the spool shifts quickly even under full system load. Static hysteresis remains below 1%, ensuring the spool position repeats accurately after direction changes, and response sensitivity better than 0.5% lets small voltage commands produce measurable flow changes. Together these characteristics provide precise, high-capacity flow control in servo-hydraulic machinery.
Command/actual Signal
±10 V (A5)
Connector Standard
DIN EN 175201-804 (K31)
Electrical Power, Average
24 W
Electrical Power, Max
72 W
Hysteresis
≤1%
Max Main Valve Flow
870 L/min
Max Operating Pressure (p, A, B)
350 bar
Nominal Flow (Δp 10 Bar)
350 L/min
Nominal Size
25
Pilot Oil Drain
External
Pilot Oil Flow (step, 315 Bar)
11.7 L/min
Pilot Oil Supply
External
Porting Pattern
ISO 4401-08-07-0-94
Response Sensitivity
≤0.5%
Supply Voltage
24 V DC
Weight
16.8 kg
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