Bosch Rexroth | 4WEH10Y4X6EG24N9K4
4WEH10Y4X/6EG24N9K4
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The 4WEH10Y4X/6EG24N9K4 valve is produced by Bosch Rexroth as part of the WEH Directional Spool Valves series and is installed to route pressurized oil to actuators in automated hydraulic machinery. It is built in size NG10, and the ISO 4401-05-05-0-05 porting pattern allows direct mounting on standardized sub-plates. A maximum flow of 160 l/min for symbol Y permits rapid cylinder movement in medium frame systems, while ports P, A, and B withstand operating pressures up to 280 bar without fatigue. The unit uses an external X pilot supply so the control flow can be taken from a clean, separately regulated line, and an external Y pilot return keeps pilot oil isolated from the tank gallery. Pressure in port Y must not exceed 210 bar, protecting the drain passages from overload. Acceptable hydraulic media cover a viscosity range from 2.8 to 500 mm²/s, letting the valve function with both thin and heavy oils under varying temperatures.
Electromagnetic actuation is provided by a 24 V DC coil that plugs into a DIN EN 175301-803 form K4 connector for quick wiring in control cabinets. The pilot stage is the 6E high-power design, giving the main spool reliable shifting force when system resistance is high. Pilot pressure can be raised to 250 bar to ensure full stroke, yet the valve responds from as low as 10 bar to suit low-pressure start-ups. A concealed N9 manual override lets maintenance staff shift the spool without energizing the coil while preventing accidental operation during service. The sealing system relies on NBR elastomers so the valve is compatible with most mineral oils within the specified range. Continuous operation is permitted with hydraulic fluid temperatures between −20 °C and +80 °C, covering cold starts and warm duty cycles common in industrial presses.
Technical Specifications
Coil Voltage
24 V DC
Electrical Connection
DIN EN 175301-803 (K4)
Hydraulic Fluid Temp (nbr)
-20 to +80 C
Manual Override
Concealed (N9)
Max Flow (ng10, Symbol Y)
160 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure
10 bar
Pilot Oil Return
External (Y)
Pilot Oil Supply
External (X)
Pilot Valve Type
6E (High-Power)
Port Y Max Pressure (dc)
210 bar
Porting Pattern
ISO 4401-05-05-0-05
Seal Material
NBR
Size
NG10
Viscosity Range
2.8 to 500 mm2/s
1620 Old Apex Road
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