4WRTE10E50L-4X/6EG24ETK31/A1M

The 4WRTE10E50L-4X/6EG24ETK31/A1M valve is a proportional directional control unit developed by Bosch Rexroth for the 4WRTE Directional Control Valves series. It meters flow to hydraulic actuators so that motion speed and direction can be adjusted by an electrical command. The nominal size of 10 establishes the port dimensions and determines the flow range for medium-capacity circuits. A standardized porting pattern of ISO 4401-05-05-0-05 allows direct mounting on subplates that follow common industrial layouts. Electrical actuation relies on a 24 V DC supply, while the valve electronics accept a ±10 V input signal so that it can be driven by typical motion controllers. The input stage presents 100 kΩ resistance, minimizing loading on the command source, and peak current draw is limited to 1.6 A to keep power supplies within standard ratings. An IP65 protection class shields the enclosure from dust and low-pressure water jets, making the valve suitable for machine environments where coolant or debris may be present. Hydraulic cleanliness must reach ISO 4406 18/16/13 to preserve spool clearances, and the assembly weighs 8.7 kg, which influences manifold design and support hardware.

Continuous service ratings define operating limits and dynamic behavior. The valve tolerates system pressures up to 350 bar, and the external pilot return path may be subjected to 315 bar without functional loss, permitting flexible circuit layouts. With a differential pressure of 5 bar across the metering lands, rated flow is 50 l/min; applications that require faster cylinder movement can use up to 170 l/min when higher pressure drop is acceptable. Static hysteresis does not exceed 0.1 %, so commanded spool positions repeat accurately during direction changes, while response sensitivity of 0.05 % or better enables fine velocity control at low signal levels. Temperature drift remains below 0.3 % per 10 °C, keeping flow characteristics stable across typical machine room variations. These parameters allow the valve to maintain predictable motion control in presses, injection machines, and other hydraulic automation tasks.