Proportional Directional Valve 4WRZ25E220-7X/6EG24N9TK4/V - Bosch Rexroth R901070672

Before the first coil is energised, the fitter wants to know whether the axis runs free. The 4WRZ25E220-7X/6EG24N9TK4/V can be shifted by its concealed auxiliary actuation for that purpose and meters 220 l/min nominal flow in service.

Benefits

• Concealed auxiliary actuation for setup work and fault finding without power.
• Pilot oil supplied externally, returned internally, so the Y line is not needed.
• 220 l/min nominal flow, with up to 870 l/min passing the main stage.
• 350 bar maximum operating pressure on the ISO 4401-08-08-0-05 interface in size 25.
• 18.2 kg weight, FKM seals, spool symbol E, control through external electronics.

Applications

It is applied on test benches and special machines that are re-tooled frequently. The external pilot supply holds pilot pressure steady even while the main circuit is not yet up. The valve works without an internal pressure reducing valve.

Manufacturer

Bosch Rexroth, material number R901070672. Characteristic curves, pilot oil demand and dimensions appear in data sheet RE 29115, overview in catalogue RE 07600-B.