Proportional Directional Valve 4WRZE25W8-220-7X/6EG24K31/A1V - Bosch Rexroth R900758294

Metering 220 l/min into a press cylinder and stopping it where the controller asks takes more than a switching valve. The 4WRZE25W8-220 is a pilot operated proportional directional valve in size 25, rated to 350 bar, carrying its amplifier on the body.

Benefits

• Nominal flow 220 l/min with headroom up to 870 l/min for peak strokes
• Operating pressure up to 350 bar across all 4 ports
• Spool Symbol W8 with spool design, 3 switching positions
• External pilot oil supply and external pilot oil return, no pressure reducing valve in the pilot stage
• On-board electronics with internal spool position feedback hold the command value without an external controller

Applications

Typical places are presses, injection moulding machines and hydraulic test rigs where a cylinder travels at up to 870 l/min before it has to stop on a defined position. The ISO 4401-08-08-0-05 interface allows a swap against an existing size 25 valve without touching the subplate. At 11 kg of dead weight, plan a sufficiently stiff mounting.

Manufacturer

Bosch Rexroth lists this product under material number R900758294. Every figure on this page comes from the manufacturer data, complete characteristic curves are in data sheet RE 29115.