Proportional Directional Valve 4WRZ10W8-50-7X/6EG24EK4/M - Bosch Rexroth R901455645

Internal supply with an external drain is the combination for systems without a pilot circuit of their own but with a loaded tank channel. The 4WRZ10W8-50-7X/6EG24EK4/M is built exactly that way and handles 50 l/min nominal flow.

Benefits

• Internal pilot supply, external pilot drain, no pilot pump needed and still drained free of pressure.
• 50 l/min nominal flow, up to 170 l/min permitted in the main channel.
• Spool symbol W8, 3 switching positions, ISO 4401-05-05-0-05 pattern.
• 315 bar operating pressure at 8.56 kg, NBR seals for HL hydraulic fluid.
• 24 VDC control through external electronics and a 7-pole (6 + PE) plug to EN 175201-804.

Technical data

Applications

This version suits power units with a return filter or a long return run, where the pilot drain should not be routed into the tank channel. Feeding from the pressure channel saves the extra pump, while the separate drain keeps the pilot stage independent of back pressure. The valve is used on feed axes and clamping systems with an analogue command signal.

Manufacturer

Built by Bosch Rexroth and listed as material number R901455645 in product family 4WRZ(E). Characteristic curves, limit values and mounting dimensions are given in datasheet Proportional directional valve, pilot-operated (RE 29115) and Hydraulic valves and hydro- (RE 07600-B).