Bosch Rexroth | 4WRZE25W6-325-7X6EG24N9ETK31A1D3M
4WRZE25W6-325-7X/6EG24N9ETK31/A1D3M
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The 4WRZE25W6-325-7X/6EG24N9ETK31/A1D3M proportional directional valve is produced by Bosch Rexroth for the WRZ Proportional Directional Valves series and is intended to modulate hydraulic flow and direction in automated machinery. A nominal size of 25 establishes the spool and port dimensions required for medium to large manifolds, while the ISO 4401-08-07-0-94 porting pattern permits direct subplate mounting. Integrated electronics operate from a 24 V DC supply, and the valve responds to a ±10 V command signal so analog controllers can position the spool proportionally. Steady operation draws 1.8 A, and a 3 A power pulse is necessary at actuation to overcome static friction. The solenoid coil shows a cold resistance of 2 Ω at 20 °C, providing a baseline for thermal current calculations. Electrical connection is through a DIN EN 175201-804 plug, which offers a keyed and sealed interface for field wiring.
The main stage tolerates up to 350 bar, enabling use in high-pressure power units, and a maximum flow of 870 l/min keeps pressure loss low in circuits with large volume demand. Under a 10 bar differential the nominal flow is 325 l/min, giving designers a reference point for pump sizing. Pilot oil is supplied internally, ensuring the pilot stage always receives pressure without external lines, and it drains internally as well to simplify plumbing. Because of the internal drain path, pressure at port T may not exceed 30 bar to protect the pilot stage. An IP65 housing shields the electrical section from dust and water jets encountered in industrial environments. The assembly weighs 18.4 kg, so mounting surfaces must support that mass without distortion, and its high pressure and flow capabilities allow rapid actuator movements in demanding hydraulic automation tasks.
Technical Specifications
Command Signal
±10 V
Electrical Connection
DIN EN 175201-804
Electronics Current Consumption
1.8 A
Max Operating Pressure (main)
350 bar
Maximum Flow
870 l/min
Nominal Flow (∆p=10 Bar)
325 l/min
Nominal Size
25
Pilot Oil Drain
Internal
Pilot Oil Supply
Internal
Port T Pressure (internal Drain)
30 bar (max)
Porting Pattern
ISO 4401-08-07-0-94
Power Pulse Current
3 A
Solenoid Coil Resistance (cold, 20°c)
2 Ω
Supply Voltage
24 V DC
Type Of Protection
IP65
Weight
18.4 kg
1620 Old Apex Road
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