Proportional Directional Valve 4WRZ32E1-520-7X/6EG24N9EK4/D3M - Bosch Rexroth R900721876

A large axis needs oil volume and its return line is rarely free of pressure. The 4WRZ32E1-520-7X/6EG24N9EK4/D3M therefore combines internal pilot oil supply with an external return while carrying a 520 l/min nominal flow.

Advantages

• Internal supply from P with external return through Y, only one extra line on the manifold.
• Nominal flow of 520 l/min, up to 1600 l/min total, operating pressure up to 350 bar.
• Pressure reducing valve in the pilot stage for constant pilot pressure.
• Spool symbol E1, three switching positions, connection diagram ISO 4401-10-09-0-05.
• Concealed manual override, HL hydraulic fluid, NBR seals.
• Weight of 41.6 kg, driven by external amplifier electronics on 24 VDC.

Applications

It is used on main axes with high return volume and filters in the tank path. The external return decouples the pilot stage from counter pressure while the internal supply saves the X line. Pilot pressure at port P has to be secured over the cycle.

Manufacturer

Bosch Rexroth, material number R900721876. 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.