Proportional Directional Valve 4WRZE10W6-25-7X/6EG24K31/A1D3M - Bosch Rexroth R901021785

Material testing machines run short strokes at a high repetition rate and tolerate no coarse command step. The 4WRZE10W6-25-7X/6EG24K31/A1D3M limits nominal flow to 25 l/min, uses spool symbol W6 and works up to 315 bar operating pressure, with pilot oil supply and return routed externally.

Benefits

• Nominal flow 25 l/min, giving fine resolution of the command value on short strokes.
• Spool symbol W6 with three switching positions, four ports to ISO 4401-05-05-0-05.
• External pilot oil supply and external pilot oil return, pressure reducing valve in the pilot circuit.
• Operating pressure up to 315 bar, maximum flow of the frame 170 l/min.
• Analog ±10 V command value, 24 VDC supply, 8.48 kg weight.

Applications

Test rigs, fatigue testing machines and alignment axes work with exactly such small flows. The on-board electronics take the voltage command straight from the rig controller. The size 10 subplate pattern allows a later move to a higher-flow frame without rebuilding the manifold.

Manufacturer

Bosch Rexroth lists the valve under R901021785. Type code 4WRZE10W6-25-7X/6EG24K31/A1D3M is decoded in datasheet RE 29115, which also holds characteristic curves and the port pattern, RE 07600-B adds the fluid data.