4WRKE25W6-220L-3X/6EG24K31/A1D3M

The 4WRKE25W6-220L-3X/6EG24K31/A1D3M is manufactured by Bosch Rexroth and belongs to the 4WRKE Directional Valves series, where it serves as an electrically controlled main stage for proportional flow and pressure management in hydraulic automation. The unit is built around nominal size 25 hardware, and the W6 spool geometry guides fluid paths with predictable switching characteristics. A linear characteristic curve labeled L ensures that flow varies proportionally with the input command, simplifying closed-loop control. Under a differential pressure of 10 bar the valve delivers a nominal flow of 220 L/min, while the main stage can pass up to 870 L/min when fully opened. Ports p, a, and b tolerate operating pressures up to 350 bar, and return flow can be routed to port T at pressures as high as 250 bar. External pilot supply and external pilot drain keep the control stage isolated from tank backpressure, preserving stable dynamics. Command signals are accepted through a ±10 V interface, and the solenoid follows a regulated 24 V DC supply.

A maximum power draw of 72 W limits heat generation during continuous duty, and the coil current is capped at 1.5 A to align with standard mobile-machine power converters. Electrical hookup is handled by a plug conforming to DIN EN 175201-804, so assembly crews can mate the valve without custom adapters or terminal strips. The enclosure meets IP65, shielding internal components from dust and water jets encountered on press lines, test stands, or outdoor equipment. Pilot pressure stabilization is achieved with the ZDR 6 DP0-4X/40YM-W80 pressure-reducing valve that is fitted to the control block; it conditions inlet pressure before it reaches the servo stage and maintains consistent responsiveness as system pressure fluctuates. Total shipping mass is 16.8 kg, which guides lifting choices and manifold design for vibration damping. These electrical, environmental, and hydraulic provisions complete the parameter set required for integrating the 4WRKE25W6-220L-3X/6EG24K31/A1D3M into high-capacity axes and centralized power units.