Proportional Directional Valve 4WRZ32W8-520-7X/6EG24N9K4/D3M - Bosch Rexroth R900704608

A hard cycling main circuit drags an internally fed pilot stage down with it. The 4WRZ32W8-520-7X/6EG24N9K4/D3M avoids that through an external pilot feed and an external return while carrying a 520 l/min nominal flow.

Advantages

• External pilot feed through X and external return through Y.
• Nominal flow of 520 l/min, up to 1600 l/min total flow.
• Pressure reducing valve in the pilot stage keeps pilot pressure limited and stable.
• Spool symbol W8 with three switching positions on four ports.
• Operating pressure up to 350 bar, connection diagram ISO 4401-10-09-0-05.
• Weight of 43.54 kg, NBR seals, concealed manual override.

Technical data

Applications

It is used on fast cycling large axes, for example in forging lines and forming presses. Because both pilot paths run outside, response and ramp stay the same over the cycle. Control is provided by external amplifier electronics on 24 VDC.

Manufacturer

Bosch Rexroth, material number R900704608. 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.