Proportional Directional Valve 4WRZ32W9-520-7X/6EG24N9K4/D3V - Bosch Rexroth R901135026

Where a press cylinder demands hundreds of litres within seconds, valve cross section decides the cycle time. This pilot-operated size 32 directional valve meters 520 l/min proportionally and opens to 1600 l/min at peak without losing control of the spool.

Benefits

• 520 l/min nominal flow and 1600 l/min peak flow cover even large differential cylinders.
• The built-in pressure reducing valve keeps pilot pressure constant regardless of system pressure up to 350 bar.
• External pilot oil supply and external pilot oil return separate the pilot stage fully from the main circuit.
• Concealed auxiliary actuation lets the axis be moved during commissioning or after a fault.
• FKM seals for higher oil temperatures, spool symbol W9, weight 37.6 kg.

Technical data

Applications

The valve is fitted to presses, forging hammers and large test cylinders where flow rate sets the cycle time. Control is handled by external amplifier electronics in the cabinet, so ramps and characteristic curves can be parameterised centrally. Interface ISO 4401-10-09-0-05 matches size 32.

Manufacturer

Bosch Rexroth lists this valve under material number R901135026, product family 4WRZ(E). The complete characteristic curves are given in the data sheet Proportional directional valve, pilot-operated (RE 29115) and Hydraulic valves and hydro- (RE 07600-B).