Proportional Directional Valve 4WRZE25W9-220-7X/6EG24N9EK31/A1D3M - Bosch Rexroth R900750197

Between fully internal and fully external piloting sits a practical mixed form. The 4WRZE25W9-220-7X/6EG24N9EK31/A1D3M takes pilot oil from the working circuit but discharges it through a dedicated port, at 220 l/min nominal flow in size 25.

Benefits

• Internal pilot oil supply saves the pilot pump while the external return keeps pilot pressure clean.
• 220 l/min nominal flow, 870 l/min maximum flow, operating pressure up to 350 bar.
• Command value ±10 V DC, matching analogue axis control cards, supply 24 V DC.
• Pressure reducing valve in the pilot circuit, symbol W9 with three switching positions.
• Concealed auxiliary actuation, weight 20.88 kg, mounting pattern ISO 4401-08-08-0-05.

Applications

The valve is used on axes in presses and special purpose machines whose power unit should stay lean while the return line carries pressure. Internal take-off combined with an external drain is the usual compromise for that. Within the range the version can be exchanged for variants with different piloting.

Manufacturer

Bosch Rexroth, material number R900750197. Pilot oil demand and characteristic curves are given in data sheet RE 29115, general notes in RE 07600-B.