Bosch Rexroth | 4WRZ25E1-325-7X6EG24N9ETK4D3V
4WRZ25E1-325-7X/6EG24N9ETK4/D3V
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The 4WRZ25E1-325-7X/6EG24N9ETK4/D3V is produced by Bosch Rexroth for the WRZ Proportional Directional Valves series and is applied to meter flow and direction in hydraulic automation loops. A nominal flow of 325 l/min at a 10 bar differential allows the unit to support large-volume circuits, while a maximum operating pressure of 350 bar makes it suitable for high-pressure lines. An ISO 4401-08-07-0-94 mounting pattern matches standard subplates, simplifying installation. The solenoid is wired through a DIN EN 175301-803 plug, giving a common interface for electrical connection. A concealed manual override lets service staff shift the spool during setup without altering the footprint. IP65 protection resists dust and water jets encountered on factory floors. Mineral oil conforming to DIN 51524 classes HL or HLP is the prescribed hydraulic medium to maintain lubrication and material compatibility. The assembly weighs 18.2 kg, so normal shop handling equipment is sufficient for placement.
Internal pilot supply and drain remove the need for external pilot hoses, reducing leak points. A ZDR 6 DP0-4X/40YM-W80 pressure reducing valve is integrated to keep pilot pressure constant before it reaches the main stage. Pilot valve size 6 provides the control flow required without enlarging the housing. The solenoid coil presents 4.8 Ω resistance at 20 °C and rises to 7.2 Ω when hot, data used to set drive electronics. A maximum coil current of 1.5 A limits heating and prevents magnetic saturation. Return flow can reach 30 bar through the internal drain, ensuring the spool is not forced closed by back pressure. FKM seals withstand elevated oil temperatures and common additives. These characteristics combine to deliver stable proportional control for precise cylinder or motor positioning in industrial machinery.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Coil Resistance (hot)
7.2 Ω
Electrical Connection
DIN EN 175301-803 Plug
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Manual Override
Concealed
Max Coil Current
1.5 A
Max Operating Pressure (main)
350 bar
Max Return Pressure (internal Drain)
30 bar
Mounting Pattern
ISO 4401-08-07-0-94
Nominal Flow (∆p = 10 Bar)
325 l/min
Pilot Supply/drain
Internal
Pilot Valve Size
6
Pressure Reducing Valve
ZDR 6 DP0-4X/40YM-W80
Seals
FKM
Type Of Protection
IP65
Weight
18.2 kg
1620 Old Apex Road
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