Bosch Rexroth | 4WRKE25E350L-3X6EG24ETK31F1D3M
4WRKE25E350L-3X/6EG24ETK31/F1D3M
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The 4WRKE25E350L-3X/6EG24ETK31/F1D3M valve is part of the 4WRKE Directional Valves series from Bosch Rexroth, intended to meter and direct hydraulic flow in automated machinery. With a nominal size of 25, the main stage is proportioned for medium-to-large circuits. A maximum main valve flow of 870 L/min allows rapid actuator movement, while the nominal flow of 350 L/min at a 10 bar differential supports stable control under typical load. Ports p, a, and b tolerate pressures up to 350 bar so the valve can work in high-pressure power units. Electrical control is provided by a 24 VDC supply and a maximum coil current of 1.5 A, enabling standard cabinet power feeds. Command signals enter through a 4–20 mA interface, and the valve returns an actual value in the same 4–20 mA range to close the loop in servo systems. A DIN EN 175201-804 connector simplifies wiring and ensures pin compatibility with common industrial harnesses.
The pilot stage needs only 11.7 L/min of oil, and both supply and drain paths are internal, which removes the need for external pilot lines. Pilot operation remains stable up to a supply pressure of 315 bar so control accuracy is maintained even when system pressure rises. Cleanliness of the hydraulic fluid is critical; the main stage requires ISO 4406 20/18/15, whereas the pilot stage uses a finer ISO 4406 17/15/12 level to protect its smaller orifices. An IP65 protection rating keeps dust ingress and water jets away from the electrical enclosure, allowing installation on exposed machine frames. The assembly weighs 16.8 kg, a mass that can be supported by standard subplates without additional bracing. Overall directional control and feedback remain dependable because the analog signal interface matches common PLC cards and the protection features preserve internal components against contamination and moisture.
Technical Specifications
Actual Value Output
4–20 mA
Cleanliness Class (main Valve)
ISO 4406 20/18/15
Cleanliness Class (pilot Valve)
ISO 4406 17/15/12
Electrical Connection
DIN EN 175201-804
Max Main Valve Flow
870 L/min
Max Pressure (p,a,b)
350 bar
Max Supply Current
1.5 A
Nominal Flow (Δp=10 Bar)
350 L/min
Nominal Size
25
Pilot Oil Flow (x Or Y)
11.7 L/min
Pilot Supply Pressure, Max
315 bar
Pilot Supply/drain
Internal/Internal
Protection Rating
IP65
Signal Interface
4–20 mA
Supply Voltage
24 VDC
Weight
16.8 kg
1620 Old Apex Road
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