Proportional Directional Valve 4WRZ32W6-520-7X/6EG24N9EK4/D3M - Bosch Rexroth R900246879

Starting behaviour, control range and pilot stability rest on three entries in the type designation. On the 4WRZ32W6-520-7X/6EG24N9EK4/D3M these are spool symbol W6, 520 l/min nominal flow and a pressure reducing valve ahead of the pilot stage.

Benefits

• Spool symbol W6 at 520 l/min nominal flow, control range and starting behaviour are fixed by this pairing.
• Pressure reducing valve in the pilot circuit, control pressure stays limited even when the main channel carries 350 bar.
• Internal supply, external pilot oil return, back pressure in the tank channel does not reach the pilot stage.
• Throughput up to 1600 l/min across 4 ports to ISO 4401-10-09-0-05 in size 32.
• 43.66 kg weight, NBR seals, intended for HL hydraulic fluid in an industrial circuit.

Applications

The valve serves main axes of presses, stretching lines and test rigs with high oil demand. Before a replacement, spool symbol and pilot variant of the old part should be compared, because both govern how the axis behaves. Concealed auxiliary actuation allows a check without the electronics connected.

Manufacturer

Bosch Rexroth, material number R900246879. Characteristic curves for symbol W6 at 520 l/min are given in data sheet RE 29115.