Proportional Directional Valve 4WRZE25W8-220-7X/6EG24N9K31/F1M - Bosch Rexroth R900757651

Close to drives and welding equipment an analogue signal line often carries more interference than useful signal. A 4...20 mA current command holds up better, and this 4WRZE25 turns it into 220 l/min nominal flow.

Benefits

• The 4...20 mA current interface is less sensitive to coupled interference than a voltage line.
• UKCA entry for electromagnetic compatibility to SI2016/1091.
• External pilot oil supply and external drain keep control circuit and working circuit apart.
• Nominal flow 220 l/min with spool symbol W8, operating pressure up to 350 bar.
• On-board electronics, 24 VDC, 7-pole connector (6 + PE), mass 20.26 kg.

Applications

The valve is intended for plants with a high electrical noise level, such as welding lines, forges and rolling mills with large drives. The current setpoint comes from the controller, the pilot oil from a separate control circuit. NBR seals are matched to hydraulic fluid HL.

Manufacturer

Bosch Rexroth builds this valve under material number R900757651. Quote that number when ordering and keep it in the spare parts list of the machine. Characteristic curves, installation dimensions and connection diagrams are in data sheet RE 29115 and RE 07600-B.