4WRZ10E85-7X/6EG24N9ETK4/D3M

The 4WRZ10E85-7X/6EG24N9ETK4/D3M proportional directional valve belongs to the WRZ Proportional Directional Valves series and is manufactured by Bosch Rexroth for closed-loop hydraulic automation. It uses size 10 ports to match medium frame actuators, and at a differential pressure of 10 bar it passes a nominal flow of 85 l/min so circuits can move cylinders at moderate speed. The main stage withstands operating pressures up to 315 bar, allowing it to work on high-pressure supply lines. A 24 V DC feed powers the proportional pilot coil, while the detachable design of the solenoid makes field replacement possible without disturbing plumbing. The coil remains functional up to 150 °C, supporting cabinet locations with elevated ambient heat. Continuous service is backed by a 100 percent duty cycle, eliminating the need for off-time during long shifts. Electrical connection is made through a DIN EN 175301-803 plug, which standardizes wiring across multiple valve positions.

The interface follows the ISO 4401-05-05-0-94 porting pattern, so the valve mounts directly on widely used subplates; the installed subplate adds 7.8 kg to the assembly weight, which should be considered when sizing support brackets. Pilot control is provided by a size 6 valve that both receives and drains pilot oil internally, eliminating external pilot lines and simplifying manifold layouts. The main stage requires fluid cleanliness to ISO 4406 20/18/15, while the pilot stage needs the finer ISO 4406 18/16/13 level to protect the proportional spool, so filtration must be arranged accordingly. A concealed manual override is available for setup or emergency actuation without energizing the coil, yet it remains protected from accidental operation during service. Tank port T is limited to 30 bar internal pressure, guiding the design of downstream return lines. These features integrate mechanical mounting, fluid cleanliness, and safety functions into a compact directional control element for repeatable axis motion.