Proportional Directional Valve 4WRZE25W8-325-7X/6EG24N9ETK31/A1M - Bosch Rexroth R901319653

A cylinder that needs 325 l/min to keep its cycle time cannot be accelerated and braked cleanly by a switching valve. The pilot-operated 4WRZE in size 25 converts a plus/minus 10 V command into continuous spool travel and takes its pilot oil internally from the main channel.

Benefits

• Nominal flow of 325 l/min with a peak of 870 l/min covers rapid traverse and fine positioning in one valve.
• Internal pilot oil supply and internal pilot oil return, so the machine needs no separate X and Y lines.
• Spool symbol W8 and three switching positions at an operating pressure of up to 350 bar.
• On-board electronics accept the plus/minus 10 V command directly, supply is 24 VDC through a 7-pole connector (6 + PE) to EN 175201-804.
• Interface pattern ISO 4401-08-08-0-05 and a mass of 20.24 kg, concealed auxiliary actuation for commissioning without control voltage.

Applications

The valve drives main axes in presses, rolling stands and plastics machinery where large oil volumes have to be moved under control. Because pilot supply and drain run internally, a manifold with the four main ports is enough. UKCA conformity to SI2016/1091 covers electromagnetic compatibility.

Manufacturer

Bosch Rexroth builds this valve under material number R901319653. 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.