Bosch Rexroth | 4WEH22J7X6EG96N9K4
4WEH22J7X/6EG96N9K4
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The 4WEH22J7X/6EG96N9K4 directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. It directs pressure and return flow in hydraulic automation systems by using electro-hydraulic actuation combined with a spring-centered main spool. The valve is manufactured in nominal size NG25, and its 4-way body provides four ports for circuit routing. A three-position spool identified by symbol J gives two working positions with a neutral center. Spring centering holds the spool until the pilot line reaches the minimum 10.5 bar required for movement, while a high-power 6E pilot valve supplies the shifting force. Both pilot oil supply and pilot oil return are external so designers can select separate pressure and tank lines. These features support compact control of cylinders and motors without the large solenoids needed in direct-acting valves.
The hydraulic section tolerates operating pressures up to 280 bar and passes 450 liters per minute at full stroke, enabling high-flow actuators to cycle quickly. Pilot circuitry may be pressurized to 210 bar, maintaining rapid response even when system pressure rises. Mounting follows the ISO 4401-08-08-0-05 porting pattern, allowing the unit to bolt onto standard subplates. Electrical power reaches the solenoid through a DIN EN 175301-803 form K4 plug that simplifies field wiring. A concealed N9 manual override lets technicians shift the spool during setup or power loss without exposing moving parts. By combining these pressure ratings, flow capacity, and standardized interfaces, the valve integrates reliably into presses, molding machines, and general motion equipment that require dependable directional control.
Technical Specifications
Actuation Type
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (symbol J)
450 l/min
Maximum Operating Pressure (p, A, B)
280 bar
Maximum Pilot Pressure
210 bar
Minimum Pilot Pressure (spring-centered)
10.5 bar
Nominal Size
NG25 (W.H 22)
Pilot Oil Return
External
Pilot Oil Supply
External
Pilot Valve
High-Power (6E)
Porting Pattern
ISO 4401-08-08-0-05
Spool Centering
Spring-Centered
Spool Positions
3 Positions
Spool Symbol
J
Way Configuration
4-Way
1620 Old Apex Road
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