Bosch Rexroth | 4WRZ25E1-325-7X6EG24N9K4D3M
4WRZ25E1-325-7X/6EG24N9K4/D3M
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The 4WRZ25E1-325-7X/6EG24N9K4/D3M proportional directional valve belongs to the WRZ Proportional Directional Valves series from Bosch Rexroth. It meters hydraulic flow for automation circuits that require controlled actuator speed and direction. The valve delivers a nominal flow of 325 l/min at a 10 bar differential, allowing precise movement under typical system conditions. When the load demands higher throughput, the main stage can pass up to 870 l/min without exceeding rated limits. The main channel tolerates operating pressures up to 350 bar, while the Y port is limited to 30 bar and the return line can accept back-pressure to 250 bar. Particle limits for reliable spool operation are set to ISO 4406 cleanliness class 20/18/15 in the main path and 18/16/13 in the pilot stage. The assembly weighs 18.2 kg in subplate mounting, which influences manifold sizing and support hardware.
Electrical actuation is supplied with 24 V DC, matching the direct-current control architecture used in most mobile and industrial power units. The solenoid draws a maximum of 1.5 A, and its copper winding presents 4.8 Ω at 20 °C, rising to 7.2 Ω when hot to limit current under continuous load. A 100 percent duty cycle allows the coil to remain energized without imposed cool-down periods, while the permissible coil temperature reaches 150 °C before insulation limits are approached. In service, the enclosure resists dust ingress and low-pressure water jets with an IP65 rating, supporting outdoor or wash-down installations. These electrical and environmental limits combine with the hydraulic data given earlier to define overall valve capability.
Technical Specifications
Cleanliness Class (main)
ISO 4406 20/18/15
Cleanliness Class (pilot)
ISO 4406 18/16/13
Coil Resistance (20 °c)
4.8 Ω
Coil Resistance (max Hot)
7.2 Ω
Duty Cycle
100 %
Ingress Protection
IP65
Max Coil Temperature
150 °C
Max Current
1.5 A
Max Main Flow
870 l/min
Max Operating Pressure (main)
350 bar
Max Pressure Port Y
30 bar
Max Return Flow Pressure (t Port)
250 bar
Nominal Flow (Δp=10 Bar)
325 l/min
Supply Voltage
24 V DC
Type Of Voltage
DC
Weight (subplate Mounting)
18.2 kg
1620 Old Apex Road
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