Proportional Directional Valve 4WRZE25W8-325-7X/6EG24N9TK31/A1D3V - Bosch Rexroth R900974150

Where the machine controller already offers a voltage interface, a valve with a ±10 V command saves the detour through a converter. This size 25 variant works at 325 l/min nominal flow, draws its pilot oil externally and returns it internally.

Benefits

• ±10 V command value, directly compatible with common analogue outputs of the controller.
• Nominal flow 325 l/min, flow through the valve up to 870 l/min.
• External pilot oil supply, independent of pressure dips in the main circuit up to 350 bar.
• Spool symbol W8, connection diagram ISO 4401-08-08-0-05, 4 ports and 3 switching positions.
• On-board electronics at 24 VDC, 7-pole connector (6 + PE) to EN 175201-804, weight 20.72 kg.

Technical data

Applications

The variant goes into presses and test benches whose control cards work with a voltage command. Because pilot oil comes from outside, the valve stays controllable even when switching from rapid traverse to pressing force. Cable length to the valve should be kept short with a voltage command.

Manufacturer

Bosch Rexroth, material number R900974150. Product family 4WRZ(E), concealed manual override, FKM seals, HL hydraulic fluid. Further details are given in data sheets RE 29115 and RE 07600-B.