Proportional Directional Valve 4WRZE32W9-520-7X/6EG24N9EK31/F1V - Bosch Rexroth R901227841

Metering oil flow on a press, a forging hammer or a large test cylinder calls for throughput and controllability in one body. The 4WRZE32W9-520-7X/6EG24N9EK31/F1V delivers 520 l/min nominal flow, 1600 l/min maximum, and works up to 350 bar operating pressure. The electronics sit on the valve and process the analog 4...20 mA command value without an extra amplifier card in the control cabinet.

Key benefits

• 520 l/min nominal flow and 1600 l/min peak flow, leaving headroom for rapid traverse phases without a second valve.
• Operating pressure up to 350 bar with FKM seals, released for HL hydraulic fluid.
• On-board electronics with a 4...20 mA current command value, less sensitive to interference than a voltage signal.
• Spool symbol W9 with 3 switching positions and 4 ports for double-acting cylinders.
• Mounting pattern ISO 4401-10-09-0-05, subplate mounting, fits any standard size 32 subplate.
• 7-pole connector (6 + PE) to EN 175201-804, 24 VDC supply.

Applications

Typical installations are presses, forging lines, test rigs and rolling mill hydraulics, where the 44 kg valve mass is irrelevant next to the oil volume moved. The valve comes without a pressure reducing valve and uses internal pilot oil supply with external pilot oil return, so the system has to provide its own return line for the pilot oil. A concealed auxiliary actuation moves the axis while the electronics are de-energised. UKCA conformity to EMC SI2016/1091 covers deliveries to the United Kingdom.

Manufacturer

Bosch Rexroth, material number R901227841. The values come from data sheet RE 29115 for pilot-operated proportional directional valves, with RE 07600-B as the supplementary document for hydraulic valves.