Proportional Directional Valve 4WRZE25E1-220-7X/6EG24N9K31/A1M - Bosch Rexroth R900765376

If the axis must remain controllable while the working circuit is switched pressureless, the pilot oil has to come from a source of its own. This version with spool symbol E1 is fed and drained externally and controls 220 l/min from a plus/minus 10 V command.

Benefits

• Separate X and Y lines, so the pilot stage depends on neither working pressure nor tank pressure.
• Spool symbol E1 with three switching positions and a defined mid position.
• Nominal flow 220 l/min, maximum 870 l/min, operating pressure up to 350 bar.
• Plus/minus 10 V command, on-board electronics, 24 VDC through a 7-pole connector (6 + PE).
• Mass 20.58 kg, NBR seals, hydraulic fluid HL.

Applications

Layouts like this appear in test rigs and special machinery where the axis has to be moved under control even with the main circuit shut down. The control circuit supplies pilot oil through X, the drain runs to tank through Y without pressure. The mounting face follows ISO 4401-08-08-0-05.

Manufacturer

Bosch Rexroth builds this valve under material number R900765376. 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.