Proportional Directional Valve 4WRZE25W8-220-7X/6EG24N9TK31/F1D3M - Bosch Rexroth R901388125

A die cushion draws its force from evenly metered flow, not from a switching command. The 4WRZE25W8-220-7X/6EG24N9TK31/F1D3M controls 220 l/min nominal flow in size 25, with a 4 to 20 mA command value, external pilot oil supply and internal pilot return.

Benefits

• Nominal flow 220 l/min with a plant maximum of 870 l/min in size 25.
• A 4 to 20 mA current command stays immune on long cable runs inside the press.
• Pilot-operated with its own pressure reducing valve in the pilot circuit, plus concealed manual override.
• Operating pressure up to 350 bar and connection diagram ISO 4401-08-08-0-05 with 4 ports.
• UKCA conformity to SI2016/1091 for electromagnetic compatibility.
• On-board electronics at 24 V DC, NBR seals, weight 20.7 kg.

Applications

The valve drives die cushions, ejectors and hold-down devices on deep drawing presses. Spool symbol W8 defines how the centre position behaves while the load is held. The concealed manual override allows moving the axis during maintenance without control voltage.

Manufacturer

Bosch Rexroth, material number R901388125. Data and characteristic curves are given in datasheet RE 29115 for the pilot-operated proportional directional valve, supplemented by the overview RE 07600-B.