Proportional Directional Valve 4WRZ32E520-7X/6EG24N9TK4/D3M - Bosch Rexroth R900772200

If pilot pressure drifts with the load, starting behaviour and switching time of the axis change from stroke to stroke. The 4WRZ32E520-7X/6EG24N9TK4/D3M takes pilot oil externally and limits it internally through a pressure reducing valve, at 520 l/min nominal flow.

Benefits

• External pilot supply plus pressure reducing valve, pilot pressure stays stable across the whole load range.
• Internal pilot oil return, the tank channel of the subplate is enough for relief.
• 520 l/min nominal flow, up to 1600 l/min throughput at 350 bar maximum operating pressure.
• Spool symbol E, 3 switching positions, 43.99 kg, ISO 4401-10-09-0-05 pattern in size 32.
• Concealed auxiliary actuation, NBR seals, intended for HL hydraulic fluid.

Applications

The valve serves axes under strongly changing load, such as forging presses, tipping gear and test rigs with load reversal. Because supply and pressure limitation are controlled separately, cycle times stay even across a shift. Signals arrive through a 7-pole (6 + PE) plug to EN 175201-804.

Manufacturer

Bosch Rexroth, material number R900772200. Characteristic curves and switching times are given in data sheet RE 29115.