Proportional Directional Valve 4WRTE25V220P-4X/6EG24TK31/F1M - Bosch Rexroth R901353348

Closed-loop travel of a heavy cylinder needs a valve that senses its spool position and corrects it. The 4WRTE25V220P-4X/6EG24TK31/F1M does that at 220 l/min nominal flow, 350 bar operating pressure, and on-board electronics that read the command value as a 4 ... 20 mA current signal.

Benefits

• 220 l/min nominal flow, up to 870 l/min maximum flow, enough for rapid traverse on large cylinders.
• A 4 ... 20 mA current command survives long cable runs, and a broken wire shows up as a reading below 4 mA.
• Internal spool position feedback holds the commanded opening even as the load changes.
• External pilot oil supply combined with internal pilot oil return keeps the valve working when port P pressure drops below pilot level.
• Spool symbol V gives a fine metering range around centre, across 3 switching positions and 4 ports.
• Mounting pattern ISO 4401-08-08-0-05 fits any standard size 25 subplate.

Applications

Presses, forging manipulators and test rigs where a cylinder travels under high load in closed loop. On-board electronics accept the command value straight from the machine controller, so no separate amplifier card is needed in the cabinet. At 17.96 kg the valve belongs on a subplate rated for that mass.

Manufacturer

Bosch Rexroth, material number R901353348. Seals are NBR, matched to HL mineral oil based hydraulic fluid.