Bosch Rexroth | 4WRZE25EB325-7X6EG24N9EK31A1V
4WRZE25EB325-7X/6EG24N9EK31/A1V
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The 4WRZE25EB325-7X/6EG24N9EK31/A1V proportional directional valve is built by Bosch Rexroth for the WRZ Proportional Directional Valves series. Designed to meter hydraulic flow in automated machinery, it uses nominal size 25 passages so the internal galleries can accommodate high-volume oil. A nominal flow capacity of 325 l/min at a 10 bar differential supports large actuators while maintaining precise positioning. The unit tolerates operating pressures up to 350 bar, enabling service in high-pressure circuits common to presses and injection-molding equipment. A standardized ISO 4401-08-07-0-94 mounting interface lets the valve bolt directly to subplates without adapter blocks. Integrated electronics run from a 24 V DC supply; they accept a ±10 V command signal so external controllers can issue proportional spool commands. Continuous current draw is limited to 1.8 A, and a 3 A pulse is available during switching to overcome static friction.
A coil resistance of 2 Ω at 20 °C defines the electromagnetic load and helps calculate heat rise during sustained duty. The winding may reach temperatures up to 150 °C before thermal limits are exceeded, supporting reliable service in hot manifolds. Connection to the machine harness is made with a DIN EN 175201-804 plug, and an IP65 enclosure rating shields the electronics from dust ingress and low-pressure water jets encountered on factory floors. A concealed manual override identified as N9 allows technicians to shift the spool during commissioning without altering the external profile. Pilot control is handled by a size 6 valve that provides fine metering of the main stage for smooth motion. FKM seals resist mineral oil and elevated temperatures, extending service life between maintenance intervals, while a mass of 18.4 kg provides the rigidity needed to damp vibration on mounting plates.
Technical Specifications
Coil Resistance (20 °c)
2 Ω
Command Signal
±10 V
Electrical Connector
DIN EN 175201-804
Electronics Current
1.8 A
Ip Rating
IP65
Manual Override
Concealed (N9)
Max Coil Temperature
150 °C
Max Operating Pressure
350 bar
Mounting Interface
ISO 4401-08-07-0-94
Nominal Flow (Δp 10 Bar)
325 l/min
Nominal Size
25
Pilot Valve Size
6
Power Pulse Current
3 A
Seal Material
FKM
Supply Voltage
24 V DC
Weight
18.4 kg
1620 Old Apex Road
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