Proportional Directional Valve 4WRTE25W8-220L-4X/6EG24TK31/F1M - Bosch Rexroth R901207350

In accumulator operation system pressure swings between the charging and discharging thresholds, and an internally piloted axis passes that on to its actuating force. This version of the 4WRTE takes pilot oil externally, returns it internally and controls 220 l/min nominal flow.

Benefits

• External pilot supply provides constant pilot pressure regardless of the accumulator charge.
• Internal pilot return saves one line and one drilling in the manifold.
• 220 l/min nominal flow, 870 l/min at peak, at 350 bar.
• Internal position control of the main spool with a linear characteristic.
• 4...20 mA command, 24 VDC supply through a 7-pole connector (6 + PE).

Applications

This layout is found on presses with accumulator charging circuits, on forging hammers and in test benches with short, energy rich cycles. The valve sits on the standard size 25 interface ISO 4401-08-08-0-05. Its weight is 18.22 kg.

Manufacturer

This product comes from Bosch Rexroth and carries material number R901207350.