Proportional Directional Valve 4WRZ32W8-360-7X/6EG24N9TK4/M - Bosch Rexroth R987051258

If working pressure collapses during the cycle, an internally supplied pilot stage follows that dip and the spool position drifts. The 4WRZ32W8-360-7X/6EG24N9TK4/M therefore takes pilot oil from a separate circuit and returns it internally, at 360 l/min nominal flow and 350 bar maximum operating pressure.

Benefits

• External pilot oil supply, internal return, the pilot stage stays fed even when working pressure drops during the cycle.
• 360 l/min nominal flow, throughput up to 1600 l/min, sized for main axes with large cylinder volume.
• Concealed auxiliary actuation, the spool can be moved during setup without power and without an exposed lever.
• ISO 4401-10-09-0-05 pattern in size 32, exchange against an equally built valve needs no rework of the subplate.
• Spool symbol W8, 43.22 kg weight, driven by an external amplifier at 24 VDC.

Applications

The valve serves main axes of large presses, forging machines and hydraulic test rigs with high oil demand. A separate pilot supply pays off where several consumers draw from one circuit at the same time. Signals arrive through a 7-pole (6 + PE) plug to EN 175201-804.

Manufacturer

Bosch Rexroth, material number R987051258. Sizing and characteristic curves are given in data sheet RE 29115 for the pilot-operated proportional directional valve.