Bosch Rexroth | 4WEH10J4X6EW110N9ETS2K4B10
4WEH10J4X/6EW110N9ETS2K4/B10
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The 4WEH10J4X/6EW110N9ETS2K4/B10 directional spool valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth. It is an electro-hydraulic unit that shifts flow paths to automate actuators in hydraulic machines. The valve is built in size NG10, and with spool symbol J it directs oil according to a specific overlap pattern. A maximum flow rate of 160 l/min supports medium-capacity circuits, while a rated operating pressure of 280 bar enables use in systems with high load forces. The porting pattern ISO 4401-05-05-0-05 matches common subplate layouts, allowing quick installation. The actuation method combines an electrical pilot with hydraulic power to minimize shift effort. Oil cleanliness must be maintained at ISO 4406 20/18/15 to prevent wear and sticking.
Pilot functions are integrated; internal channels supply pilot oil (ET) and return it to port T, eliminating external lines. The pilot stage works between a minimum of 12 bar and a maximum of 250 bar, so control pressure can be tuned for reliable centering and fast shifts. A discharge control S2 feature lets technicians adjust switching time to match cylinder velocity needs. A Ø1.0 mm throttle insert code B10 moderates pilot flow and dampens pressure spikes. Electrical connection is provided through a DIN EN 175301-803 K4 plug, simplifying coil replacement and wiring. The valve operates with hydraulic fluids in a viscosity range of 2.8 to 500 mm²/s, covering most mineral oils and synthetic blends used in industrial power units.
Technical Specifications
Actuation
Electro-Hydraulic
Cleanliness Class
ISO 4406 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Max Flow (symbol J, Ng10)
160 l/min
Max Operating Pressure (p, A, B)
280 bar
Maximum Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
12 bar
Pilot Oil Return
Internal To T (ET)
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-05-05-0-05
Spool Symbol
J
Switching Time Adjustment
Discharge Control (S2)
Throttle Insert
Ø1.0 mm (B10)
Valve Size
NG10
Viscosity Range
2.8 to 500 mm²/s
1620 Old Apex Road
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