Bosch Rexroth | 4WEH10E4X6EG24N9ES2K4B10
4WEH10E4X/6EG24N9ES2K4/B10
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The 4WEH10E4X/6EG24N9ES2K4/B10 directional spool valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth. It directs hydraulic flow to actuators in automated systems where electrically piloted changeover of ports is required. The valve size is NG10, so passage areas match medium-capacity machines. Its porting pattern follows ISO 4401-05-05-0-05, allowing the body to mount on standard subplates. An internal pilot oil supply feeds the 6E pilot control valve, which shifts the main spool. Pilot oil returns externally to prevent pressure buildup in the cover. Reliable operation is supported by a minimum pilot pressure of 12 bar and a maximum pilot pressure of 250 bar. Main working ports P, A, and B withstand operating pressures up to 280 bar, enabling the unit to handle demanding cylinder or motor loads.
The valve’s solenoid circuit is rated for 24 V DC and connects through a DIN EN 175301-803 K4 plug for straightforward wiring. A concealed manual override designated N9 permits manual actuation when electrical power is unavailable. Switching time can be tuned with the S2 discharge control, giving the user control over spool transition speed. Pilot flow is tempered by a B10 throttle insert with a 1.0 mm orifice to reduce switching shock. Under symbol E the assembly supports a maximum flow of 160 l/min, matching the NG10 size classification. Installation uses four M6 × 45 screws according to ISO 4762, and each fastener is tightened to 12.5 Nm to secure the housing without distortion.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Electrical Voltage
24 V DC
Manual Override
Concealed (N9)
Max Flow (ng10, Symbol E)
160 l/min
Max Operating Pressure (p, A, B)
280 bar
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure
12 bar
Mounting Screws
4x M6 x 45 (ISO 4762)
Pilot Control Valve
6E
Pilot Oil Return
External
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-05-05-0-05
Screw Tightening Torque
12.5 Nm
Switching Time Adjustment
Discharge Control (S2)
Throttle Insert
Ø1.0 mm (B10)
Valve Size
NG10
1620 Old Apex Road
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