Bosch Rexroth | 4WEH10J4X6EG24N9EK4B10
4WEH10J4X/6EG24N9EK4/B10
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The 4WEH10J4X/6EG24N9EK4/B10 valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series and directs flow between pressure and actuator lines in hydraulic automation systems. The NG10 size matches the ISO 4401-05-05-0-05 mounting surface, allowing straightforward installation on standard subplates. A J-type spool establishes the required P-A, P-B, and T return paths for bidirectional cylinder control. The unit handles up to 160 l/min, and ports P, A, and B tolerate continuous operation at 280 bar. Pilot oil is drawn internally from the pressure line, while an external Y channel returns pilot flow to tank, a layout that simplifies piping yet prevents back-pressure in the pilot stage. Proper actuation begins once 12 bar pilot pressure is reached, ensuring reliable spool shift even at low system startup pressures.
The pilot circuit can be loaded to 250 bar, but the Y return line must not exceed 210 bar, protecting the solenoid-operated pilot stage from overload. Electrical actuation relies on a 24 V DC coil connected through a DIN EN 175301-803 K4 plug, allowing quick exchange with standard cable sets. A concealed manual override identified by code N9 is provided for commissioning when power is unavailable. Flow stability is further managed by a Ø1.0 mm throttle insert labeled B10, which limits pilot oil surge during rapid spool movement. With two solenoids installed, the assembly weighs 6.8 kg, so mounting plates must support that mass without distortion.
Technical Specifications
Coil Voltage
24 V DC
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow
160 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pressure Pilot Return Y (dc)
210 bar
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure
12 bar
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (E)
Porting Pattern
ISO 4401-05-05-0-05
Size
NG10
Spool Symbol
J
Throttle Insert
Ø1.0 mm (B10)
Weight (two Solenoids)
6.8 kg
1620 Old Apex Road
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