Bosch Rexroth | 4WRZ32E520-7X6EG24N9K4D3M
4WRZ32E520-7X/6EG24N9K4/D3M
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The 4WRZ32E520-7X/6EG24N9K4/D3M valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth and is intended to meter flow and control actuator direction in hydraulic automation. Its valve size of 32 gives a large flow path that suits high-capacity circuits, and a nominal flow of 520 l/min at a 10 bar differential allows rapid cylinder or motor movement. A maximum operating pressure of 350 bar lets the unit function in heavy-duty systems without derating. The porting pattern ISO 4401-10-08-0-94 standardizes manifold layout, while subplate mounting simplifies service exchange; the assembly weight of 42.2 kg must be supported accordingly. A pilot valve size of 6 balances response speed with pilot energy consumption. An IP65 degree of protection keeps dust and water jets from entering the coil housing so the valve can be installed in wash-down areas.
The electromagnetic section runs on a 24 V DC supply, and a coil resistance of 4.8 Ω establishes the current profile that the drive electronics must furnish; the solenoid is limited to 1.5 A so power amplifiers can be sized accurately. A maximum coil temperature of 150 °C tolerates elevated oil or ambient heat without loss of insulation integrity. Wiring is handled through a DIN EN 175301-803 connector, giving a quick-disconnect interface for maintenance. A concealed manual override, coded N9, enables spool shifting during setup while preventing accidental actuation in normal service. The external drain path at port T can withstand up to 150 bar, whereas port Y is restricted to 30 bar to protect the pilot stage; these limits safeguard seals and maintain proportional accuracy under fluctuating back-pressures.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Degree Of Protection
IP65
Electrical Connection
DIN EN 175301-803
Manual Override
Concealed (N9)
Max Coil Temperature
150 °C
Max Operating Pressure
350 bar
Max Port T Pressure (ext Drain)
150 bar
Max Port Y Pressure
30 bar
Max Solenoid Current
1.5 A
Mounting
Subplate
Nominal Flow (Δp=10 Bar)
520 l/min
Pilot Valve Size
6
Porting Pattern
ISO 4401-10-08-0-94
Supply Voltage
24 V DC
Valve Size
32
Weight (subplate Mounting)
42.2 kg
1620 Old Apex Road
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