Bosch Rexroth | 4WEH10E4X6EW110N9DAV
4WEH10E4X/6EW110N9DA/V
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The 4WEH10E4X/6EW110N9DA/V valve belongs to the WEH Directional Spool Valves series manufactured by Bosch Rexroth for hydraulic automation circuits where electric pilot control is required. Its nominal size of 10 defines the interface area for flow paths and matches standard subplates. The unit handles a maximum flow of 160 l/min under symbol E conditions, allowing medium-capacity actuators to cycle without restriction. Service ports P, A, and B tolerate up to 280 bar, and the same 280 bar rating on port T prevents shell distortion during back-pressure events. A pilot supply can reach 250 bar, while spring-centered actuation begins at a minimum pilot pressure of 12 bar, ensuring reliable spool return when solenoids de-energize. The permissible viscosity range of 2.8 to 500 mm²/s accommodates thin startup oils and heavy fluids at operating temperature. Required oil cleanliness is class 20/18/15 per ISO 4406, preventing particulate interference with the precision-ground spool and bore.
Ambient temperatures from -15 to +50 °C allow cabinet or open-frame mounting without auxiliary heating, and hydraulic fluid may reach -15 to +80 °C so the valve can function in warm-running power units. FKM seals resist this thermal span and protect against mineral oil swelling. A porting pattern of ISO 4401-05-05-0-05 aligns the body with common NG10 manifolds for quick exchange. Four M6 × 45 mounting screws according to ISO 4762 secure the housing; each screw is tightened to 12.5 Nm to maintain flatness between the valve and subplate. The mean time to dangerous failure is 100 years, contributing to long machine uptime targets. When these mechanical and environmental limits are observed, the spool shifts precisely, and the valve maintains directional control throughout its service life.
Technical Specifications
Ambient Temperature Range (fkm)
-15 to +50 C
Fluid Cleanliness (iso 4406 (c))
20/18/15
Hydraulic Fluid Temp Range (fkm)
-15 to +80 C
Max Flow (symbol E, Ng10)
160 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Operating Pressure (t)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
12 bar
Mounting Screw Torque
12.5 Nm
Mounting Screws (ng10)
M6 x 45 (ISO 4762)
Mounting Screws Quantity
4
Mttfd (type Weh)
100 years
Nominal Size (ng)
10
Porting Pattern
ISO 4401-05-05-0-05
Seal Material
FKM
Viscosity Range
2.8 to 500 mm2/s
1620 Old Apex Road
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