Proportional Directional Valve 4WRLD25W8-350LJ-4X/MXY/24ND6T - Bosch Rexroth R901532918

A hydraulic axis should hold its own position without a controller card taking up cabinet space and wiring. The 4WRLD25W8-350LJ-4X/MXY/24ND6T covers both jobs in one device, metering 400 l/min nominal flow at 350 bar operating pressure with the digital axis controller mounted on the valve body.

Benefits

• Integrated axis controller - closed-loop control runs on the valve electronics, powered from 24 V DC, so no external amplifier card is required.
• 400 l/min nominal flow in size 25, with up to 1250 l/min possible by design.
• 350 bar operating pressure across all four ports, rated for HL hydraulic fluid with NBR seals.
• Symbol W8 with three switching positions for cylinders and motors that travel under control in both directions.
• Internal spool position feedback keeps the spool on the command value even against high flow forces.
• External pilot oil supply and external pilot oil return keep the pilot circuit separate from the main circuit.

Application

The usual home for this valve is a servo axis in presses, test rigs and forming equipment where position or velocity is commanded by a higher-level controller. The ISO 4401-08-08-0-05 interface allows a direct swap against other size 25 valves on existing subplates. At 18.58 kg it belongs in stationary power units.

Manufacturer

Bosch Rexroth, material number R901532918. Conformity is documented as UKCA with electromagnetic compatibility per SI2016/1091.