Bosch Rexroth | 4WEH10R4X6EW110N9ETS2DAB10
4WEH10R4X/6EW110N9ETS2DA/B10
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The 4WEH10R4X/6EW110N9ETS2DA/B10 directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. It directs hydraulic flow in automated circuits, using a size NG10 body that follows the ISO 4401 porting pattern for manifold mounting. The main stage passes up to 160 l/min, while ports P, A, and B withstand continuous pressures to 280 bar and the T port tolerates the same limit for reliable return-line operation. Pilot actuation requires at least 12 bar and may rise to 250 bar, driven by a 6E high-power pilot valve supplied and drained internally in the ET configuration. A concealed N9 manual override permits emergency shifting without exposing moving parts. The assembly weighs 6.8 kg, aiding predictable load calculations during installation.
System cleanliness must achieve ISO 4406 class 20/18/15 to protect the valve’s precision surfaces. A B10 throttle insert with a 1.0 mm orifice tempers pilot flow and complements the S2 discharge control feature that allows external adjustment of switching time. The Y internal control line is rated for 160 bar, so auxiliary devices must maintain pressure below this value. Mounting with M6 screws requires a tightening torque of 12.5 Nm to secure the housing without distortion. These parameters combine with the earlier flow and pressure capabilities to provide predictable response in servo-controlled hydraulic tasks.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Manual Override
Concealed (N9)
Max Flow
160 l/min
Max Pilot Pressure
250 bar
Max Pressure (p,a,b)
280 bar
Max Pressure (t Port)
280 bar
Max Pressure (y Internal, Ac)
160 bar
Min Pilot Pressure (3-pos)
12 bar
Pilot Control Valve
6E High-Power
Pilot Oil Configuration
Internal Supply/Return (ET)
Porting Pattern
ISO 4401
Switching Time Adjustment
S2 (Discharge Control)
Throttle Insert
Ø1.0 mm (B10)
Tightening Torque (m6 Screws)
12.5 Nm
Valve Size
NG10
Weight (two Solenoids)
6.8 kg
1620 Old Apex Road
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