Proportional Directional Valve 4WRZ10W8-85-7X/6EG24EK4/M - Bosch Rexroth R900725322

The pilot drain has its share in how steadily the pilot stage works. On the 4WRZ10W8-85-7X/6EG24EK4/M the pilot oil comes from the pressure channel and leaves the valve through a port of its own, at 85 l/min nominal flow.

Benefits

• Internal pilot supply, external pilot drain, the pilot return goes to tank separately.
• 85 l/min nominal flow, up to 170 l/min in the main channel of size 10.
• Spool symbol W8 with 3 switching positions on the ISO 4401-05-05-0-05 pattern.
• 315 bar operating pressure at 7.74 kg, NBR seals for HL hydraulic fluid.
• 24 VDC, external electronics, 7-pole (6 + PE) plug to EN 175201-804.

Applications

In manifolds the valve replaces existing units of the same pilot variant without relocating any lines. It makes sense wherever back pressure builds in the tank channel while no separate pilot pump is available. Typical axes are machine tool feeds as well as infeed movements on presses and test rigs.

Manufacturer

At Bosch Rexroth the article runs under material number R900725322 within 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).