Bosch Rexroth | 4WEH10W4X6EW110N9ETS2DK25LB10D3
4WEH10W4X/6EW110N9ETS2DK25L/B10D3
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The 4WEH10W4X/6EW110N9ETS2DK25L/B10D3 valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for directing flow in hydraulic automation. Electro-hydraulic actuation moves a spring-centered spool that defaults to neutral when power is removed. The unit is built to the NG10 size and provides a 4-way flow path suited to standard actuator circuits. Its subplate interface follows porting pattern ISO 4401-05-05-0-05, allowing direct mounting on common manifolds. The spool passes up to 160 l/min under symbol W, while pressure ports P, A, and B tolerate 280 bar during continuous service. A 1.0 mm throttle orifice meters pilot oil to control shift dynamics, and system oil must meet a cleanliness level of ISO 4406 (c) 20/18/15 to prevent wear.
Pilot oil is drawn internally from port P and returned internally to T, eliminating external lines. The pilot circuit withstands 250 bar, and the return path is limited to 160 bar when operated with AC power. A built-in pressure reducer caps secondary pressure at 45 bar to protect the control stage, and the spool will not shift unless at least 12 bar pilot pressure is present. Switching time can be tuned with the discharge control S2 feature so that response matches system requirements. These parameters combine to deliver consistent directional control under varying load and pressure conditions.
Technical Specifications
Actuation Type
Electro-Hydraulic
Cleanliness Class
ISO 4406 (c) 20/18/15
Max Flow (ng10, Symbol W)
160 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (t)
160 bar (AC)
Min Pilot Pressure
12 bar
Pilot Oil Return
Internal To T
Pilot Oil Supply
Internal (From P)
Porting Pattern
ISO 4401-05-05-0-05
Pressure Reducer Secondary Pressure
45 bar
Size
NG10
Spool Centering
Spring-Centered
Switching Time Adjustment
Discharge Control (S2)
Throttle Orifice
1.0 mm
Way Configuration
4-Way
1620 Old Apex Road
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