Proportional Directional Valve 4WRTE25W8-220L-4X/6EG24K31/A1M - Bosch Rexroth R901093690

A position controller in the PLC calculates with a fixed valve gain, and every deviation from it costs control quality. The linear characteristic of this 4WRTE with spool symbol W8 keeps the gain constant across the whole command range, at 220 l/min nominal flow with a ±10 V command.

Benefits

• Linear characteristic with internal position control gives a gain that stays constant across the range.
• ±10 V command matches bipolar analogue outputs of motion controllers directly.
• 220 l/min nominal flow, up to 870 l/min maximum, at 350 bar operating pressure.
• External pilot supply and external return decouple the pilot stage from the working circuit.
• 18.15 kg, ISO 4401-08-08-0-05 connection diagram, three switching positions.

Technical data

Applications

The valve is used on position controlled axes in machine tools, test benches and forming plants whose controller sits in the PLC. The sign of the command sets the direction. The valve runs on HL hydraulic fluid with NBR seals.

Manufacturer

This product comes from Bosch Rexroth and carries material number R901093690.