Proportional Directional Valve 4WRZ32W8-520-7X/6EG24N9TK4/D3V - Bosch Rexroth R901262745

Large press and rolling mill axes demand flow rates that size 25 no longer covers. This pilot-operated size 32 proportional valve puts 520 l/min nominal flow on the axis, holds pilot pressure steady through an integrated pressure reducing valve and is driven by an external amplifier.

Benefits

• 520 l/min nominal flow, with up to 1600 l/min possible across the valve
• An integrated pressure reducing valve in the pilot circuit keeps control pressure independent of system pressure up to 350 bar
• External pilot oil supply with internal pilot oil return
• Spool symbol W8, three switching positions, four ports, ISO 4401-10-09-0-05 port pattern
• Concealed auxiliary actuation for commissioning without a signal
• 24 VDC supply through a 3-pole (2 + PE) connector, weight 43.66 kg

Applications

The valve works in forging and sheet metal presses, rolling stands and large test rigs. It runs with a separate amplifier card that handles ramps and command scaling. Subplate mounting to ISO 4401-10-09-0-05 is the standard interface at size 32.

Manufacturer

At Bosch Rexroth the valve carries material number R901262745. 2 datasheets record step response, hysteresis and mounting dimensions.