Bosch Rexroth | 4WRKE25W8-220L-3X6EG24K31A1D3M
4WRKE25W8-220L-3X/6EG24K31/A1D3M
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The 4WRKE25W8-220L-3X/6EG24K31/A1D3M valve belongs to the 4WRKE Directional Valves series and is manufactured by Bosch Rexroth for closed-loop hydraulic automation. It is a nominal size 25 unit so it fits manifolds that handle medium to high flow circuits. At a differential pressure of 10 bar the valve passes 220 L/min, allowing responsive actuation of large cylinders. The design withstands operating pressures up to 350 bar, which covers most mobile and industrial power unit ratings. Mineral oil to DIN 51524 is specified as the pressure fluid, ensuring sealing materials and damping orifices remain compatible with standard hydraulic oils. Control electronics accept a 24 V DC supply and process a ±10 V command signal so the spool position can be modulated by common motion controllers. A removable coil solenoid simplifies field replacement without opening the pressure envelope, and an inductive position transducer sends continuous feedback for precise closed-loop metering.
Environmental and installation details complete the technical profile. An IP65 ingress rating keeps dust and low-pressure water jets from reaching the electrical section, while the DIN EN 175201-804 connector standardizes wiring to cabinet harnesses. The subplate interface follows port pattern ISO 4401-08-07-0-94, allowing direct mounting on common CETOP 08 bases. Power dissipation is limited to 72 W and supply current peaks at 1.5 A, figures that help size the drive amplifier and cabinet ventilation. To secure the body a bolt torque of 100 Nm is recommended, preventing leakage without over-stressing the casting. Hydraulic cleanliness must reach ISO 4406 class 20/18/15 to protect spool lands and the proportional pilot stage. Finally, the assembly weighs 16.8 kg, which influences handling equipment selection during installation.
Technical Specifications
Cleanliness Class (main)
ISO 4406 20/18/15
Command Signal
±10 V
Electrical Connection
DIN EN 175201-804
Ingress Protection
IP65
Max Operating Pressure (p,a,b)
350 bar
Max Power
72 W
Max Supply Current
1.5 A
Mounting Bolt Torque
100 Nm
Nominal Flow (Δp 10 Bar)
220 L/min
Nominal Size
NS25
Port Pattern
ISO 4401-08-07-0-94
Position Transducer
Inductive
Pressure Fluid
Mineral Oil (HL, HLP) DIN 51524
Solenoid Type
Removable Coil
Supply Voltage
24 V DC
Weight
16.8 kg
1620 Old Apex Road
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