Bosch Rexroth | 4WRZ32W6-520-7X6EG24N9EK4M
4WRZ32W6-520-7X/6EG24N9EK4/M
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The 4WRZ32W6-520-7X/6EG24N9EK4/M valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and regulates actuator motion in hydraulic automation. It is built to nominal size 32 and carries a W6 spool, forming large metering edges for proportional flow control. The design delivers 520 l/min at a 10 bar differential, supporting high-volume circuits. Main passages withstand 350 bar, matching common high-pressure systems. A 24 V DC solenoid energized through a DIN EN 175301-803 connector drives the pilot stage. The integrated pilot valve is size 6, providing the control force for the main spool. Total mass is 42.2 kg, a consideration for manifold or subplate mounting.
The mounting face follows the ISO 4401 porting pattern to fit standard hydraulic subplates. Pilot oil is supplied internally, and excess pilot flow returns through an external drain to keep control pressure stable. Port Y tolerates 30 bar while the return port t can accommodate 150 bar, allowing moderate back-pressure on the tank line. The valve operates with mineral oil of the HL or HLP groups specified in DIN 51524. Dynamic sealing is achieved with NBR elastomers compatible with the recommended fluid. A concealed manual override lets technicians shift the spool mechanically when electrical power is unavailable.
Technical Specifications
Electrical Connection
DIN EN 175301-803
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Manual Override
Concealed
Max Operating Pressure (main)
350 bar
Max Port Y Pressure
30 bar
Max Return Port Pressure (t)
150 bar
Nominal Flow (Δp=10 Bar)
520 l/min
Nominal Size (ng)
32
Pilot Oil Drain
External
Pilot Oil Supply
Internal
Pilot Valve Size
6
Porting Pattern
ISO 4401
Seal Material
NBR
Spool Type
W6
Supply Voltage
24 V DC
Weight
42.2 kg
1620 Old Apex Road
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