Proportional Directional Valve 4WRZ25E1-325-7X/6EG24N9EK4/M - Bosch Rexroth R900967416

Varying counter pressure at the pilot drain shifts the step response from cycle to cycle. The 4WRZ25E1-325-7X/6EG24N9EK4/M avoids that with an external return and internal supply, and controls 325 l/min nominal flow.

Benefits

• External return, internal supply, the pilot drain stays free of varying counter pressure.
• 325 l/min nominal flow, flow up to 870 l/min, spool symbol E1 in size 25.
• 20 kg weight, 350 bar maximum operating pressure, ISO 4401-08-08-0-05 pattern.
• Concealed auxiliary actuation, protected against accidental operation.
• Commanded at 24 VDC through an external amplifier, 7-pole (6 + PE) plug to EN 175201-804.

Applications

The valve serves cycled axes whose positioning time has to stay equal over many strokes, for example on forming presses and handling equipment. The separate Y line keeps the boundary conditions of pilot control constant. The main circuit supplies pilot oil through the P channel.

Manufacturer

Bosch Rexroth, material number R900967416. Step response and characteristic curves are documented in data sheet RE 29115, the range in RE 07600-B.