Proportional Directional Valve 4WRZE32W8-520-7X/6EG24N9EK31/A1D3V - Bosch Rexroth R900712740

At 520 l/min nominal flow the pilot stage decides how cleanly an axis follows its ramp. The 4WRZE32W8-520-7X is pilot-operated, carries a pressure reducing valve in the pilot stage and accepts the command value as an analog ±10 V signal at its on-board electronics. No separate amplifier card in the control cabinet is required.

Key benefits

• Nominal flow 520 l/min and flow up to 1600 l/min, sized for cylinders running at rapid traverse.
• Operating pressure up to 350 bar in size 32, interface to ISO 4401-10-09-0-05.
• Command value ±10 V through a 7-pole connector (6 + PE) to EN 175201-804, 24 VDC supply.
• Internal pilot oil supply with external pilot oil return, the X line in the manifold is dropped.
• FKM seals and HL hydraulic fluid for systems running at higher oil temperature.
• Concealed manual override lets the axis be moved without electrical power.

Applications

The valve controls cylinders and hydraulic motors that run under position or velocity control at high flow. Typical machines are presses, rolling mills, test rigs and large injection moulding machines. The manifold must take the pilot oil return externally, while pilot supply is taken internally. At 43.91 kg the valve belongs on a properly supported subplate.

Manufacturer

Bosch Rexroth, material number R900712740. Characteristic curves, performance limits and installation dimensions are given in data sheet RE 29115, with a series overview in catalogue RE 07600-B.