Proportional Directional Valve 4WRZ32W8-360-7X/6EG24N9K4/D3M - Bosch Rexroth R901025720

A rolling stand loads the hydraulics in bursts and pressure falls away in between. The 4WRZ32W8-360-7X/6EG24N9K4/D3M answers that with external pilot oil supply and external return at a 360 l/min nominal flow in size 32.

Advantages

• External pilot oil supply and external return, independent of the main circuit load cycle.
• Nominal flow of 360 l/min, up to 1600 l/min total flow.
• Pressure reducing valve in the pilot stage limits pilot pressure to a fixed level.
• Spool symbol W8, three switching positions, four ports, ISO 4401-10-09-0-05.
• Concealed manual override, operating pressure up to 350 bar.
• Weight of 43.4 kg, NBR seals, external amplifier electronics on 24 VDC.

Applications

It is used on screw-down and bending cylinders in rolling mills and on large forming plants. Separate piloting preserves the operating point when main pressure collapses in bursts. The manifold has to provide ports X and Y.

Manufacturer

Bosch Rexroth, material number R901025720. Product family 4WRZ(E). Further details are given in data sheet RE 29115 on the pilot-operated proportional directional valve and in the overview RE 07600-B.