4WE6J6X/EG12NK40/62SO43A-1855

The 4WE6J6X/EG12NK40/62SO43A-1855 valve belongs to the WE Directional Spool Valves series and is produced by Bosch Rexroth. It directs hydraulic flow to actuators by shifting its spool with a high-power wet-pin solenoid, which develops strong magnetic force while being cooled by surrounding oil. The coil is designed for a nominal voltage of 12 V DC so the unit can be wired directly to vehicle electrical systems, and its 30 W power rating delivers consistent energization for precise spool travel. A rated coil current of 2.5 A supports this power level, while a ±10 % voltage tolerance keeps performance stable during battery charge variations. Continuous service is permitted because the solenoid is specified for a 100 % ED duty cycle, eliminating the need for rest intervals. Electrical termination is achieved through a sealed Deutsch DT04-2PA two-pin connector that guards the contacts against moisture and vibration encountered in harsh environments.

For circuit integration the valve follows the ISO 4401-03-02-0-05 (NFPA D03) porting pattern, allowing it to bolt to common subplates without adaptors. It handles a maximum operating pressure of 350 bar at the pressure and work ports so it can control high-pressure pumps without premature leakage, while the tank port is limited to 210 bar to protect return-line components. The flow capacity reaches 80 l/min in direct current operation, enabling adequate volume for medium-size cylinders and motors. A switching frequency of up to 4.2 cycles per second supports rapid on-off control in proportional logic sequences. The solenoid’s coil surface may reach 120 °C during sustained energization, so mounting clearances must accommodate this heat. A manual override is present, letting service personnel shift the spool mechanically during commissioning or in case of power loss, ensuring circuit safety.