Bosch Rexroth | 4WEH10D4XO6EG24N9K4
4WEH10D4X/O6EG24N9K4
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The 4WEH10D4X/O6EG24N9K4 valve is produced by Bosch Rexroth as part of the WEH Directional Spool Valves series. It serves hydraulic automation circuits by directing flow with an electro-hydraulic actuation system that shifts the spool when a 24 V DC control signal energizes the pilot stage. The unit follows a 4-way configuration, giving separate P, T, A and B paths for cylinder or motor control. Nominal size is NG 10 so it matches subplates with the ISO 4401-05-05-0-05 porting pattern. An external pilot oil feed is required, with stable operation maintained between a minimum pilot pressure of 10 bar and a maximum of 250 bar. Electrical connection is made through a DIN EN 175301-803 K4 plug.
The valve is intended for systems that maintain oil cleanliness at ISO 4406 (c) 20/18/15 to protect the precision spool fit. A concealed manual override coded N9 allows local actuation during commissioning or power loss. Flow paths P, A and B can accommodate operating pressures up to 280 bar, while port T is rated for the same 280 bar and port Y for 210 bar, ensuring safe return and drain lines. The average pilot volume needed for each switching stroke in the two-position version is 4.08 cm³, which influences response time and energy use. Its mean time to dangerous failure is 100 years, indicating high functional reliability.
Technical Specifications
Actuation
Electro-Hydraulic
Cleanliness Class
ISO 4406 (c) 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pressure Port T
280 bar
Max Pressure Port Y
210 bar
Min Pilot Pressure
10 bar
Mttfd
100 years
Nominal Size
NG 10
Pilot Oil Supply/return
External
Pilot Volume Per Switching (2-pos)
4.08 cm3
Porting Pattern
ISO 4401-05-05-0-05
Supply Voltage
24 V DC
Valve Configuration
4-Way
1620 Old Apex Road
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