4WRKE25W8-350L-3X/6EG24ETK31/A5D3M

The 4WRKE25W8-350L-3X/6EG24ETK31/A5D3M directional valve belongs to the 4WRKE Directional Valves series manufactured by Bosch Rexroth for closed-loop hydraulic automation. It receives a command input of ±10 V and returns an actual value output of the same ±10 V range so that electronic controls can compare target and feedback signals without conversion. A 24 V DC supply powers the electronics, while the current draw is limited to 1.5 A to match common machine power budgets. The maximum electrical demand is 72 W, permitting compact power supplies in the control cabinet. A removable coil solenoid simplifies service by allowing coil exchange without opening the hydraulic section. The electrical interface follows DIN EN 175201-804, ensuring connector compatibility with standard wiring harnesses. An IP65 ingress protection rating shields internal components from dust and water jets during routine wash-down. The unit weighs 16.8 kg, which must be supported by the manifold or mounting plate. Internal supply and drain for the pilot stage remove the need for external pilot plumbing.

The valve handles operating pressures up to 350 bar at ports p, a, and b so it can serve high-pressure actuators in industrial presses or molding machines. A nominal flow of 350 L/min at a 10 bar differential allows rapid cylinder movement without excessive energy loss. The porting pattern follows ISO 4401-08-07-0-94, which lets the unit mount directly on standard subplates. The main flow path requires oil cleanliness of 20/18/15, while the pilot stage permits 17/15/12, guiding filtration choices for both circuits. A built-in pressure reducing valve designated ZDR 6 DP0-4X/40YM-W80 maintains a stable pilot pressure so the spool can shift accurately under varying load conditions. The removable coil solenoid referenced earlier drives the spool, and the pressure data combine with the porting layout to define overall performance. Together, these characteristics provide controlled flow direction and pressure regulation in automated hydraulic systems.