4WE6J6X/EW24NDA/H18/62

The 4WE6J6X/EW24NDA/H18/62 directional spool valve is manufactured by Bosch Rexroth for the WE Directional Spool Valves series. It directs hydraulic flow to actuators in automated machinery where electrical signals control fluid paths. The unit mounts on an ISO 4401-03-02-0-05 (D03) subplate, which standardizes installation across manifolds. Four ports labeled A, B, P, and T provide the pressure, return, and actuator connections required for typical cylinder circuits. Because the installation position can be any orientation, designers can place the valve wherever space permits without affecting performance. Electrical actuation is handled by a wet-pin detachable coil that simplifies service by allowing coil replacement without opening the hydraulic envelope. The coil is rated for 24 V AC at 50 or 60 Hz, and the circuit accepts a ±10 percent voltage variation so the valve remains reliable during minor supply fluctuations. An inrush demand of 220 VA at switch-on ensures rapid magnet force generation for quick spool movement.

It operates continuously because the duty cycle is 100 percent ED, allowing the coil to stay energized for long periods without overheating. Once the spool is shifted, holding power drops to 50 VA, which reduces electrical load during steady states. The hydraulic section passes up to 60 L/min, supporting medium-flow actuators in mobile or industrial equipment. Operating pressure at the A, B, and P lines reaches 350 bar, while the tank port withstands up to 160 bar, matching modern high-pressure systems. A switching frequency of two cycles per second is permitted for AC service, enabling repetitive motion tasks without premature wear. Fluid cleanliness must meet ISO 4406 (c) class 20/18/15 so the spool surfaces remain free of abrasive particles and maintain sealing integrity. Together these limits define the performance envelope for automated hydraulic circuits that require reliable directional control.