Bosch Rexroth | 4WRKE25W8-220L-3X6EG24ETK31F1D3M
4WRKE25W8-220L-3X/6EG24ETK31/F1D3M
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The 4WRKE25W8-220L-3X/6EG24ETK31/F1D3M is a proportional directional valve manufactured by Bosch Rexroth within the 4WRKE Directional Valves series. Designed for hydraulic automation, it meters flow and selects flow paths under electro-hydraulic control. The valve uses nominal size 25, and its porting pattern follows ISO 4401-08-07-0-94 so it can be installed on standard subplates. A nominal flow of 220 L/min defines the reference throughput, while a maximum permissible flow of 870 L/min allows short-term peak demand. The assembly withstands operating pressures up to 350 bar, enabling use in high-pressure circuits. Both the pilot oil supply and the pilot oil drain are internal, which removes external piping and reduces leakage points. Electrical connection is made through a DIN EN 175201-804 connector, giving a common interface with servo amplifiers.
Mounting screws must be tightened to 100 Nm to maintain seal integrity during pressure cycles. The solenoid operates on a 24 VDC supply, and the coil draws up to 1.5 A, resulting in a maximum power consumption of 72 W that planners must account for in the power budget. Hysteresis is limited to 1 % so the commanded spool position remains consistent after direction changes, while response sensitivity of 0.5 % or less means small signal variations produce measurable flow changes for precise control. NBR seals contain the hydraulic fluid and resist standard mineral oils encountered in industrial systems. The complete valve weighs 16.8 kg, which influences lifting methods and manifold support during installation.
Technical Specifications
Electrical Connector
DIN EN 175201-804
Hysteresis
≤ 1%
Max Operating Pressure
350 bar
Max Permissible Flow
870 L/min
Mounting Screw Torque
100 Nm
Nominal Flow
220 L/min
Nominal Size
25
Pilot Oil Drain
Internal
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-08-07-0-94
Power Consumption (max)
72 W
Response Sensitivity
≤ 0.5%
Seal Material
NBR
Supply Current (max)
1.5 A
Supply Voltage
24 VDC
Weight
16.8 kg
1620 Old Apex Road
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