Bosch Rexroth | 4WEH22J7X6EW110N9ETDALB10V
4WEH22J7X/6EW110N9ETDAL/B10V
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The 4WEH22J7X/6EW110N9ETDAL/B10V valve is part of the WEH Directional Spool Valves series from Bosch Rexroth and is applied to route hydraulic fluid in automated motion circuits. It is built in nominal size 25 and uses spool symbol J, providing three positions that are spring-centered so the spool returns to neutral when both solenoids are de-energized. With a maximum flow of 450 l/min and an operating pressure limit of 280 bar at ports P, A, and B, the unit supports high-capacity actuators. Internal pilot supply and return (code ET) eliminate external pilot lines, while a minimum pilot pressure of 10.5 bar is needed to shift the spool. Manifold attachment follows port pattern ISO 4401-08-08-0-05, and the specified fluid cleanliness class of 20/18/15 per ISO 4406 helps prevent wear. A throttle insert with a 1.0 mm orifice (option B10) moderates pilot flow and dampens pressure fluctuations.
The pilot circuit can be loaded up to 210 bar, giving a wide control range for dynamic machine functions. Installation uses six M12 × 60 screws, each tightened to 100 Nm to secure the valve body against the subplate and maintain seal compression. The assembly weighs 11.9 kg when both solenoids are fitted, which informs support and handling requirements during maintenance. An MTTFd value of 100 years reflects a long statistical time to dangerous failure, benefiting safety-related controls that rely on predictable component life. These characteristics combine mechanical stability, defined service intervals, and high pilot capability to match the needs of modern hydraulic automation.
Technical Specifications
Fluid Cleanliness Class
20/18/15 (ISO 4406)
Max Flow (spool J)
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (spring-centered)
10.5 bar
Mounting Screws
6 × M12 × 60
Mttfd
100 years
Nominal Size
25
Pilot Oil Configuration
Internal Supply/Internal Return (ET)
Port Pattern
ISO 4401-08-08-0-05
Screw Tightening Torque
100 Nm
Spool Centering
Spring-Centered
Spool Positions
3
Spool Symbol
J
Throttle Insert
Ø 1.0 mm (B10)
Weight (two Solenoids)
11.9 kg
1620 Old Apex Road
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