Bosch Rexroth | 4WEH22E7X6EW110N9TDAB10V
4WEH22E7X/6EW110N9TDA/B10V
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The 4WEH22E7X/6EW110N9TDA/B10V valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series and directs hydraulic flow in automated machinery where rapid and reliable actuator control is required. The NG25 size defines the port centers and allows the valve to pass high flow without excessive pressure drop. A subplate mounting interface lets technicians replace the unit quickly during maintenance. The port layout follows ISO 4401-08-08-0-05 so it aligns with standardized manifold blocks. With the E spool configuration the device supports up to 450 l/min, accommodating cylinders with large bore diameters. System pressure can reach 280 bar at ports P, A, and B, matching heavy-duty circuit demands. Pilot actuation is supplied by a 6E control valve that governs spool movement remotely. A 1.0 mm throttle insert is fitted in the pilot line to stabilize shifting speed and prevent pressure spikes.
The pilot stage tolerates pressures up to 210 bar, ensuring reliable operation when the supply line is highly loaded. For a spring-centered three-position version the pilot pressure must be at least 10.5 bar so the spool reaches its end positions. The accepted oil viscosity range from 2.8 to 500 mm²/s lets the valve run with both low and high viscosity fluids. Operating fluid temperatures can vary between −15 and +80 °C without harming internal components. An ISO 4406 cleanliness class of 20/18/15 indicates the filtration level needed to avoid premature wear. FKM seals resist heat and mineral oil, extending service life in demanding environments. A concealed manual override allows local actuation during commissioning or in the event of signal loss.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Hydraulic Fluid Temp Range
-15 to +80 C
Manual Override
Concealed
Max Flow (spool E)
450 l/min
Max Pilot Pressure
210 bar
Max Port P/a/b Pressure
280 bar
Min Pilot Pressure (3-pos Spring)
10.5 bar
Mounting
Subplate
Pilot Control Valve
6E
Porting Pattern
ISO 4401-08-08-0-05
Seal Material
FKM
Size
NG25
Spool Symbol
E
Throttle Insert Diameter
1.0 mm
Viscosity Range
2.8 to 500 mm2/s
1620 Old Apex Road
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