Bosch Rexroth | 4WEH22G7X6EW110N9K4
4WEH22G7X/6EW110N9K4
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The 4WEH22G7X/6EW110N9K4 valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series and directs hydraulic flow in automated machinery. Its 4/3-way configuration offers three stable positions so cylinders or motors can advance, retract, or hold as commanded. Spool symbol G defines the internal flow paths selected in each position to match common circuit requirements. Size 25 ports provide the flow section needed for medium to high throughput applications, while the ISO 4401-08-08-0-05 porting pattern lets the unit fit standard subplates. The subplate mounting style streamlines replacement and service because the body lifts clear once bolts are removed. Pilot oil is brought in through external port X and returned through external port Y to isolate the control stage from system contamination. A concealed manual override permits emergency shifting without exposing the button to accidental actuation.
During service the valve tolerates 280 bar on pressure and work ports, enabling use in high-pressure circuits. The pilot stage safely accepts up to 210 bar and requires at least 10.5 bar to move the spool, ensuring reliable switching even with long pilot lines. Each actuation consumes 14.2 cm³ of pilot oil, a value that helps designers size accumulators and reduce control lag. The body is fixed with six M12 × 60 screws specified by ISO 4762, and these screws must be tightened to 100 N·m (±10 %) to prevent leakage under load. With both solenoids installed the assembly weighs 19.0 kg, so mounting surfaces must support that mass and resist vibration.
Technical Specifications
Manual Override
Concealed
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (x External)
10.5 bar
Mounting Screws
6x M12 x 60 (ISO 4762)
Mounting Type
Subplate Mounting
Pilot Oil Return
Y External
Pilot Oil Supply
X External
Pilot Volume Per Switching
14.2 cm3
Porting Pattern
ISO 4401-08-08-0-05
Screw Tightening Torque
100 Nm (±10%)
Size (ng)
25
Spool Symbol
G
Valve Configuration
4/3-Way
Weight (two Solenoids)
19.0 kg
1620 Old Apex Road
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