Bosch Rexroth | 4WEH10J4X6EG24N9K4
4WEH10J4X/6EG24N9K4
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The 4WEH10J4X/6EG24N9K4 valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series and directs pressurized oil between actuator ports in automated hydraulic circuits. It is built for NG10 cavities, securing a nominal passage that matches medium-capacity machinery. A high-power 6E pilot stage shifts the main spool, and both pilot oil supply and return are external so manifold designers can route pilot lines independently of the tank gallery. The spool carries symbol J, which defines the flow paths created in its centered and actuated positions. Reliable movement begins once 12 bar of pilot pressure is present, ensuring predictable actuation at low system pressure. The solenoid that drives the pilot stage operates at 24 V DC and is wired through a DIN EN 175301-803 form K4 connector for straightforward servicing. A concealed N9 manual override permits commissioning or emergency shifting without energizing the coil. The mounting face complies with ISO 4401-05-05-0-05, allowing direct installation on standardized subplates.
The main stage passes up to 160 l/min when the spool is fully shifted, supporting rapid cylinder or motor movement in hydraulic equipment. Ports P, A, and B tolerate continuous pressures of 280 bar, and port T is rated for the same 280 bar so elevated back pressure in the return line does not damage the housing. Pilot circuits may be loaded to 250 bar, keeping the 6E stage stable under high demand. The unit accepts fluid with viscosities from 2.8 to 500 mm²/s, covering cold starts and normal operating temperatures, and the oil should meet ISO 4406 cleanliness class 20/18/15 to preserve internal clearances. These limits ensure consistent spool centering, low leakage, and steady performance throughout the service life of the valve.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Coil Voltage
24 V DC
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (symbol J, Ng10)
160 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pressure Port T
280 bar
Min Pilot Pressure
12 bar
Mounting Interface
ISO 4401-05-05-0-05
Nominal Size
NG10
Pilot Oil Return
External
Pilot Oil Supply
External
Pilot Valve Type
High-Power (6E)
Spool Symbol
J
Viscosity Range
2.8 to 500 mm²/s
1620 Old Apex Road
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