Proportional Directional Valve 4WRZE25W6-220-7X/6EG24ETK31/A1D3M - Bosch Rexroth R900954679

A smaller nominal flow in the same body improves control resolution at medium oil volumes. The 4WRZE25W6-220-7X/6EG24ETK31/A1D3M meters 220 l/min at 350 bar, uses spool symbol W6 and receives its pilot oil internally.

Benefits

• Nominal flow 220 l/min instead of the larger step, finer resolution in part load.
• Up to 870 l/min remain possible through the valve, keeping reserve for rapid traverse.
• Operating pressure up to 350 bar, mounting pattern ISO 4401-08-08-0-05, three switching positions.
• Internal pilot oil supply and internal return, no additional control circuit required.
• Analog ±10 V command value at the on-board electronics, 24 VDC supply, 7-pole connector (6 + PE).
• NBR seals for HL hydraulic fluid, mass 20.6 kg.

Applications

Typical duties are feed axes on presses and test rigs that alternate between slow approach and fast retract. The reduced nominal flow keeps the curve steeper in the working range and makes fine control easier. The valve replaces a larger rating without changing subplate or piping.

Manufacturer

Bosch Rexroth, material number R900954679. Sizing data and characteristic curves are in the data sheet Proportional directional valve, pilot-operated (RE 29115).