Bosch Rexroth | 4WRZ25E325-7X6EG24N9K4V
4WRZ25E325-7X/6EG24N9K4/V
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The 4WRZ25E325-7X/6EG24N9K4/V valve belongs to the WRZ Proportional Directional Valves series and is manufactured by Bosch Rexroth for hydraulic automation systems that need proportional control of actuator direction and speed. It uses a 24 V DC solenoid coil that draws up to 1.5 A, facilitating direct connection to common machine power rails. A continuous 100 % duty cycle lets the coil remain energized indefinitely, and a temperature limit of 150 °C prevents thermal damage during sustained operation. Electrical wiring is made through a DIN EN 175301-803 connector for quick field servicing, while a concealed manual override allows manual spool shifting without exposing the mechanism. The housing attains an IP65 rating to block dust and low-pressure water jets, and the assembled unit weighs 18.2 kg when mounted on a subplate, which influences manifold support requirements.
The hydraulic section passes 325 l/min at a 10 bar differential, giving the flow needed for high-speed cylinders. The main stage withstands 350 bar system pressure, and the internal pilot circuit is limited to 25 bar, setting boundaries for pilot feed design. If the pilot drain is routed externally the T port may handle up to 250 bar, whereas an internal drain path restricts that port to 30 bar, so routing decisions affect allowable back-pressure. Pilot oil is supplied internally to reduce external lines and is drained externally to stabilize pilot pressure. The valve mounts to manifolds using the ISO 4401-08-07-0-94 pattern, ensuring interchangeability with standardized size 08 subplates. Together these pressure ratings, flow capacity, and mounting interface enable proportional metering across a wide load range without cavitation.
Technical Specifications
Coil Voltage
24 V DC
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803
Manual Override
Concealed
Max Coil Temperature
150 °C
Max Current
1.5 A
Max Operating Pressure (main Valve)
350 bar
Max Pilot Pressure (main Valve)
25 bar
Max Port T Pressure (external Drain)
250 bar
Max Port T Pressure (internal Drain)
30 bar
Nominal Flow (∆p=10 Bar)
325 l/min
Pilot Oil Drain
External
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-08-07-0-94
Protection Rating
IP65
Weight (subplate Mounting)
18.2 kg
1620 Old Apex Road
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