Bosch Rexroth | 4WEH10E4X6EG24N9K4
4WEH10E4X/6EG24N9K4
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The 4WEH10E4X/6EG24N9K4 is a directional spool valve in the WEH Directional Spool Valves series from Bosch Rexroth that routes hydraulic flow for automated machinery. It mounts to subplates that follow the ISO 4401 porting pattern and incorporates a 6E pilot valve for electromagnetic actuation. Two 24 V DC solenoids shift the spool and let controllers select flow paths remotely. The valve handles up to 160 l/min so cylinders and motors can operate at moderate speeds. Ports P, A, and B tolerate 280 bar, and port T is rated for the same 280 bar to accept high back-pressure returns. Pilot supply pressure may reach 250 bar to guarantee positive switching, while spring-centered designs need at least 12 bar pilot pressure to displace the centering springs.
Pilot exhaust on port y can rise to 210 bar under DC operation without impairing function, letting designers place the drain line in pressurized circuits. Acceptable oil viscosity spans 2.8–500 mm²/s, and seal compatibility permits fluid temperatures up to 80 °C. To protect the precision-ground spool, hydraulic cleanliness must meet ISO 4406 class 20/18/15. A concealed N9 manual override gives service personnel a way to actuate the valve during setup or power loss. Installation calls for mounting screws tightened to 12.5 Nm, and the fully assembled unit with two solenoids and a centering spring weighs 6.8 kg.
Technical Specifications
Fluid Cleanliness
ISO 4406 20/18/15
Manual Override
Concealed (N9)
Max Flow
160 l/min
Max Fluid Temp
80 °C (NBR/FKM)
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (y)
210 bar (DC)
Max Pressure Port T
280 bar
Max Viscosity
500 mm²/s
Min Pilot Pressure (spring-centered)
12 bar
Min Viscosity
2.8 mm²/s
Mounting Screw Torque
12.5 Nm
Pilot Valve
6E
Porting Pattern
ISO 4401
Solenoid Voltage
24 V DC
Weight (2 Solenoids, Spring-centered)
6.8 kg
1620 Old Apex Road
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