Proportional Directional Valve 4WRZE32W6-360-7X/6EG24N9ETK31/F1D3M - Bosch Rexroth R900744440

Oversizing a valve leaves the axis working in the lower part of the curve, where accuracy suffers. At 360 l/min nominal flow under 350 bar the 4WRZE32W6-360-7X covers mid-sized axes in the usable range, needing no control lines thanks to its internal pilot circuit.

Benefits

• 360 l/min nominal flow instead of the next larger step, giving finer resolution across the working range.
• Internal pilot supply with internal return, no external piping in the control circuit.
• 4 to 20 mA current command into on-board electronics, supply 24 VDC.
• Spool symbol W6, three switching positions, four ports, flow up to 1600 l/min possible.
• 350 bar operating pressure, NBR seals, HL hydraulic fluid, 43.6 kg.
• ISO 4401-10-09-0-05 pattern in size 32, 7-pole connector (6 + PE) to EN 175201-804.

Application

It makes sense on feed or positioning axes whose demand falls below the 520 step, machine tools or handling gear for example. The internal pilot circuit assumes system pressure that is permanently applied. Concealed auxiliary actuation is there for maintenance along with setup.

Manufacturer

Bosch Rexroth, material number R900744440, product family 4WRZ(E). Curves, pilot pressure plus installation notes are in data sheet RE 29115, RE 07600-B describes the scope of the series. Conformity UKCA under SI2016/1091.