Bosch Rexroth | 4WRZ32E1-520-7X6EG24N9ETK4D3M
4WRZ32E1-520-7X/6EG24N9ETK4/D3M
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The 4WRZ32E1-520-7X/6EG24N9ETK4/D3M valve belongs to the WRZ Proportional Directional Valves series and is built by Bosch Rexroth to regulate flow and direction in hydraulic automation circuits. It handles a nominal flow of 520 l/min at a differential pressure of 10 bar, giving it capacity for large actuators, while a maximum operating pressure of 350 bar lets it work in high-pressure systems. The pilot stage is a size 6 unit and receives pilot oil internally, so no external pilot piping is required. Electrical actuation is supplied with 24 V DC, and the solenoid draws up to 1.5 A; a cold coil resistance of 4.8 Ω defines the current–voltage relation. Because the duty cycle is rated at 100 %, the coil can stay energized continuously without overheating. Mounting follows the ISO 4401-10-08-0-94 porting pattern, which standardizes subplate layouts across equipment.
Connection to the machine wiring is made through a DIN EN 175301-803 plug, and the enclosure carries an IP65 rating so the electronics are protected against dust ingress and low-pressure water jets. The coil is designed for operation up to 150 °C, extending service life in hot manifolds. A concealed manual override is present, letting technicians shift the spool during commissioning without exposing the actuator to accidental bumps. NBR seals are used throughout to maintain compatibility with common mineral hydraulic oils. Pilot pressure stability is provided by an integrated ZDR 6 DP0-4X/40YM-W80 pressure reducing valve, ensuring the metering edges receive constant control pressure. The subplate version for size 32 weighs 42.2 kg, a factor to consider when specifying lifting and mounting hardware.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803
Manual Override
Concealed
Max Coil Temperature
150 °C
Max Operating Pressure
350 bar
Nominal Flow (10 Bar Δp)
520 l/min
Pilot Oil Supply
Internal
Pilot Valve Size
6
Porting Pattern
ISO 4401-10-08-0-94
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Protection
IP65
Seals Material
NBR
Solenoid Max Current
1.5 A
Supply Voltage
24 V DC
Weight (subplate, Size 32)
42.2 kg
1620 Old Apex Road
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