Bosch Rexroth | 4WRZE25EA325-7X6EG24N9K31A1M
4WRZE25EA325-7X/6EG24N9K31/A1M
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The 4WRZE25EA325-7X/6EG24N9K31/A1M valve belongs to the WRZ Proportional Directional Valves series and is produced by Bosch Rexroth for closed-loop hydraulic automation. It meters flow and direction in circuits where accurate positioning and speed control are required. The unit is built to nominal size 25, giving a nominal flow of 325 l/min when the pressure drop across the valve is 10 bar. Under less restrictive conditions, it can pass up to 870 l/min to satisfy high-demand actuators. The main ports tolerate operating pressures up to 350 bar, while the return line at port T is limited to 250 bar to protect tank piping. An auxiliary drain at port Y withstands 30 bar to ensure safe pilot oil discharge. These hydraulic limits permit use in presses, molding machines, and other installations that rely on stable high-pressure operation.
The valve integrates a proportional solenoid with an on-board electronics module powered by a 24 VDC supply. Command signals are accepted as ±10 V for closed-loop control from external motion controllers. The cold coil resistance is 2 Ω, and continuous operation draws a maximum current of 2.5 A, with short power pulses reaching 3 A during rapid spool shifts. The on-board amplifier itself consumes 1.8 A, so cabinet power budgeting must account for the additional load. Coil temperature may rise to 150 °C without loss of function, provided adequate fluid cooling is maintained. Electrical connection is made through a DIN EN 175201-804 interface, and the assembled valve carries an IP65 degree of protection against dust and water jets. Total installed mass is 18.4 kg, allowing direct mounting to subplates without supplemental supports.
Technical Specifications
Coil Resistance (cold)
2 Ω
Command Value Signal
±10 V
Degree Of Protection
IP65
Electrical Connection
DIN EN 175201-804
Max Coil Temperature
150 °C
Max Current
2.5 A
Max Flow
870 l/min
Max Operating Pressure (main)
350 bar
Max Return Pressure At Port T
250 bar
Nominal Flow (∆p 10 Bar)
325 l/min
Nominal Size
25
Obe Current Consumption
1.8 A
Port Y Max Pressure
30 bar
Power Pulse Current
3 A
Supply Voltage
24 VDC
Weight
18.4 kg
1620 Old Apex Road
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