Bosch Rexroth | 4WEH10J4X6EW110N9ETK4B12
4WEH10J4X/6EW110N9ETK4/B12
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The 4WEH10J4X/6EW110N9ETK4/B12 spool valve is produced by Bosch Rexroth and belongs to the WEH Directional Spool Valves series, where it directs hydraulic oil within automated machinery. The valve relies on electro-hydraulic actuation so a solenoid-controlled pilot stage shifts the main spool for remote operation. It is configured as a 4-way unit with three positions, allowing extend, retract, or neutral flow paths. The component carries spool symbol J and is supplied in nominal size NG10, matching standard subplate patterns. A maximum flow of 160 l/min can pass through the J spool, supporting medium-capacity circuits. Installation follows the ISO 4401-05-05-0-05 interface, enabling direct mounting on common manifolds. Operating pressure reaches 280 bar at ports P, A, and B, while port T withstands 160 bar, giving the valve a broad working range for presses and material-handling stations.
Pilot control is self-contained because supply oil is taken internally from port P and the return is routed internally to port T, eliminating external pilot lines. The pilot stage functions between 12 bar and 250 bar, defining the minimum and maximum pilot pressure window for consistent shifting. Cleanliness must meet ISO 4406 20/18/15, so filtration is required to hold particle levels within that code. A concealed manual override permits spool movement during setup or power loss without exposing the mechanism to contaminants. The design achieves an MTTFd of 100 years, indicating a very low probability of dangerous failure through its service life. These features complement the flow capacity, mounting pattern, and pressure limits already noted, completing the technical profile needed for dependable hydraulic automation.
Technical Specifications
Actuation Type
Electro-Hydraulic
Cleanliness Class
ISO 4406 20/18/15
Manual Override
Concealed
Max Flow (spool J, Ng10)
160 l/min
Max Port P/a/b Pressure
280 bar
Max Port T Pressure (et, Ac)
160 bar
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure
12 bar
Mounting Interface
ISO 4401-05-05-0-05
Mttfd
100 years
Nominal Size
NG10
Number Of Positions
3
Number Of Ways
4-way
Pilot Oil Return
Internal (to T)
Pilot Oil Supply
Internal (from P)
Spool Symbol
J
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