Bosch Rexroth | 4WEH10E4X6EW110N9ETDAB10
4WEH10E4X/6EW110N9ETDA/B10
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The 4WEH10E4X/6EW110N9ETDA/B10 directional spool valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and serves to route hydraulic flow under remote electrical command. Its electro-hydraulic actuation lets a solenoid-operated pilot stage shift the main spool without direct manual force. The valve offers a 4/3-way function that provides three distinct flow positions for cylinders or motors. With size NG10 and a porting pattern of ISO 4401-05-05-0-05, it fits standard subplates for quick replacement. Spool symbol E defines the land geometry used to meter ports during crossover. Pilot oil is supplied internally from port P and returned internally through port T, removing the need for external pilot hoses. Shifting begins at a minimum pilot pressure of 12 bar, while a Ø 1.0 mm throttle insert tempers pilot flow to reduce hydraulic shock.
The valve sustains flows up to 160 l/min and withstands operating pressures of 280 bar at ports p, a, and b. Pilot passages tolerate pressures up to 250 bar to match high-pressure control circuits. Installation uses M6 × 45 mounting screws tightened to 12.5 Nm, securing the body against the manifold face. The hydraulic fluid must meet cleanliness class ISO 4406 20/18/15 to protect the precision-ground spool and bore. An Mttfd of 100 years supports functional safety analyses that rely on long service life. Together these ratings confirm that the 4WEH10E4X/6EW110N9ETDA/B10 delivers reliable direction control in demanding, high-pressure automation systems.
Technical Specifications
Actuation
Electro-Hydraulic
Cleanliness Class
ISO 4406 20/18/15
Max Flow
160 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure
12 bar
Mounting Screw Size
M6 × 45
Mounting Screw Torque
12.5 Nm
Mttfd (type Weh)
100 Years
Pilot Oil Return
Internal (T)
Pilot Oil Supply
Internal (P)
Porting Pattern
ISO 4401-05-05-0-05
Size
NG10
Spool Symbol
E
Throttle Insert
Ø 1.0 mm
Valve Function
4/3-Way
1620 Old Apex Road
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