4WRKE25E1-350L-3X/6EG24K31/A1D3M-280

The 4WRKE25E1-350L-3X/6EG24K31/A1D3M-280 directional valve is manufactured by Bosch Rexroth for the 4WRKE Directional Valves series. It meters hydraulic flow to actuators in automated machinery. Nominal size 25 defines the passage dimensions and supports medium-capacity circuits. The ISO 4401-08-07-0-94 mounting pattern lets the unit bolt to standard subplates, reducing installation time. A nominal flow of 350 L/min at 10 bar differential handles typical service demands, while a permissible peak flow of 870 L/min prevents restriction during rapid movements. Ports P, A, and B tolerate operating pressures up to 350 bar so the valve can remain in high-pressure lines without external relief devices. NBR sealing resists common mineral oils and limits internal leakage. The IP65 housing shields the integrated electronics from dust and low-pressure water jets in factory environments. At 16.8 kg, the body provides the stiffness needed to resist vibration yet stays manageable for single-person mounting.

The electrohydraulic section responds to a ±10 V command signal supplied by the motion controller, and an internal LVDT returns a ±10 V actual value so the host system can verify spool position. A removable 6E solenoid coil powered from 24 VDC draws up to 72 W, giving fast actuation while remaining serviceable without disturbing hydraulic plumbing. The electrical interface uses a DIN EN 175201-804 connector, streamlining cable assemblies across multiple stations. Response sensitivity of 0.5 % or better enables the spool to move at very small input changes, and hysteresis limited to 1 % ensures repeatable positioning when reversing direction. These performance figures keep cylinder speeds stable even under fine control loops. Together, the low hysteresis, precise feedback, and standard connectors allow the valve to integrate easily with proportional amplifiers and PLC modules that regulate flow in automated presses, injection machines, and test rigs.