Bosch Rexroth | 4WEH22J7X6EG24N9S2K4
4WEH22J7X/6EG24N9S2K4
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The 4WEH22J7X/6EG24N9S2K4 directional valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth. It directs hydraulic oil between pump, actuator, and tank in automated systems. The 4/3-way configuration provides three distinct spool positions for bidirectional cylinder control and a centered neutral state. Nominal size 25 sets passage dimensions suited to medium-capacity circuits, and spool symbol J defines metering edges that balance flow in both directions. The valve tolerates 280 bar on ports P, A, and B, and it passes up to 450 l/min without excessive pressure loss. A high-power 6E pilot stage shifts the spool with a 24 V DC solenoid. Electrical connection uses a DIN EN 175301-803 K4 plug, and pilot oil is supplied externally to isolate actuation pressure from the main line.
Pilot oil also returns externally so back pressure in the tank line does not influence spool movement. A concealed manual override coded N9 lets maintenance staff shift the valve during power loss while preventing unintended activation. Pilot pressure may rise to 210 bar and must remain above 10.5 bar in spring-centered service to ensure reliable centering. Port T withstands 250 bar when the y port is piped externally, supporting circuits with elevated return pressures. Switching time can be adjusted through discharge control element S2 so actuation speed matches system requirements. The mounting interface follows ISO 4401-08-08-0-05, allowing direct installation on standard NG25 subplates. These characteristics give the valve consistent switching under demanding industrial loads.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Operating Pressure (p, A, B)
280 bar
Max Pressure Port T (y External)
250 bar
Maximum Flow (symbol J)
450 l/min
Maximum Pilot Pressure
210 bar
Minimum Pilot Pressure (3-pos., Spring)
10.5 bar
Nominal Size (ng)
25
Pilot Control Valve
6E (High-Power)
Pilot Oil Return
External
Pilot Oil Supply
External
Porting Pattern
ISO 4401-08-08-0-05
Rated Voltage
24 V DC
Spool Symbol
J
Switching Time Adjustment
Discharge Control (S2)
Way Configuration
4/3-Way
1620 Old Apex Road
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