Proportional Directional Valve 4WRZE10W9-85-7X/6EG24N9K31/A1M - Bosch Rexroth R901327589

Supplying an axis from a separate pilot circuit calls for a valve that neither draws pilot pressure from the working line nor dumps it back into it. The 4WRZE10W9-85-7X/6EG24N9K31/A1M is built that way: pilot oil supply and pilot oil return are routed externally, and it meters 85 l/min nominal flow at operating pressures up to 315 bar.

Benefits

• 85 l/min nominal flow in size 10, maximum flow 170 l/min.
• Spool symbol W9, 3 switching positions and 4 ports on connection diagram ISO 4401-05-05-0-05.
• External pilot oil supply and external pilot oil return keep the control circuit clear of working pressure.
• On-board electronics, ±10 V command value, 24 VDC through a 7-pole (6 + PE) connector to EN 175201-804.
• NBR seals for HL hydraulic fluid, 8.48 kg weight.
• Concealed auxiliary actuation shifts the spool even when no electrical signal is present.

Applications

The valve drives feed and positioning axes on presses, clamping fixtures and test rigs. A nominal flow of 85 l/min matches medium bore cylinders that have to approach gently and hold position under changing load. Power units carrying their own pilot pump accept it as it is, no extra piping in the working circuit.

Manufacturer

Bosch Rexroth, material number R901327589. Conformity UKCA, electromagnetic compatibility (EMC) SI2016/1091. Characteristic curves and mounting dimensions are given in data sheet RE 29115 and in overview data sheet RE 07600-B.