Proportional Directional Valve 4WRZE32W8-360-7X/6EG24ETK31/F1D3M - Bosch Rexroth R901250207

Whether a pilot-operated size 32 directional valve needs two more pilot lines in the manifold depends only on how the pilot stage is arranged. The 4WRZE32W8-360-7X/6EG24ETK31/F1D3M draws its pilot oil internally and returns it internally, so on the ISO 4401-10-09-0-05 interface only the working ports have to be piped. Nominal flow is 360 l/min at an operating pressure of 350 bar.

Key benefits

• Internal pilot oil supply with internal pilot drain - the X line and the Y line disappear, which cuts piping work on the subplate mounting.
• 360 l/min nominal flow, up to 1600 l/min possible by valve size - headroom for short rapid traverse phases.
• Command value 4...20 mA - a current signal stays stable over long cable runs and a broken wire can be detected.
• Spool symbol W8 with 3 switching positions on 4 ports - a spool valve with defined metering edges.
• On-board electronics on 24 VDC - wired through a 7-pole connector (6 + PE) to EN 175201-804, with no separate amplifier in the cabinet.
• Pressure reducing valve in the pilot circuit - keeps pilot pressure independent of a system pressure of up to 350 bar.

Applications

The valve steers large cylinders and hydraulic motors in presses, rolling stands and forging manipulators where travel and speed are set steplessly. At 41 kg it counts among the heavy parts of a control manifold, so handling should be prepared. NBR seals and hydraulic fluid HL are specified. Conformity UKCA SI2016/1091 covers electromagnetic compatibility.

Manufacturer

Made by Bosch Rexroth, material number R901250207. Characteristic curves, step responses and installation dimensions appear in data sheet RE 29115 for the pilot-operated proportional directional valve, supplemented by RE 07600-B on hydraulic valves.