Bosch Rexroth | 4WEH22J7X6EW110N9DA
4WEH22J7X/6EW110N9DA
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The 4WEH22J7X/6EW110N9DA valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and regulates flow paths in hydraulic automation circuits. It is manufactured for valve size NG25, giving it the passage dimensions suited to mid-range power units. Installation follows the ISO 4401-08-08-0-05 porting pattern, and six M12 × 60 mounting screws are specified for attachment. A screw tightening torque of 100 Nm secures the body to the manifold while maintaining the contact face roughness at Rzmax 4 µm for reliable sealing. System fluid must meet a cleanliness class of 20/18/15 under ISO 4406 so that spool lands operate without scoring or jamming.
The hydraulic stage supports a maximum flow of 450 l/min for symbol J and withstands 280 bar on ports P, A, and B. Port T tolerates up to 250 bar, and port Y is limited to 160 bar. Pilot control uses external oil supply and external return; this arrangement accepts up to 210 bar pilot pressure while requiring a spring-centered minimum of 10.5 bar to shift the spool. These pressure ratings allow the valve to direct high-energy actuators without exceeding housing or seal limits.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Contact Face Roughness
Rzmax 4 µm
Max Flow (symbol J)
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Max Pressure Port T
250 bar
Max Pressure Port Y (ac)
160 bar
Min Pilot Pressure (spring-centered)
10.5 bar
Mounting Screws
6 × M12 × 60
Pilot Oil Return
External
Pilot Oil Supply
External
Porting Pattern
ISO 4401-08-08-0-05
Screw Tightening Torque
100 Nm
Valve Size
NG25
1620 Old Apex Road
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