Bosch Rexroth | 4WEH16G7X6EG24N9K4B08
4WEH16G7X/6EG24N9K4/B08
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The 4WEH16G7X/6EG24N9K4/B08 valve is manufactured by Bosch Rexroth and belongs to the WEH Directional Spool Valves series. It is intended to direct flow in hydraulic automation circuits. The unit has a nominal size of 16, provides four ways, and offers three spool positions to switch actuator paths. Electromagnetic actuation uses a 24 V DC coil, and wiring is made through a DIN EN 175301-803 connector. Installation follows the ISO 4401-07-07-0-05 mounting pattern for interchangeability with standard manifolds. The pressure chambers p, a, and b can be loaded up to 280 bar, while pilot oil is supplied internally through channel X.
Pilot oil is returned externally via port Y, which tolerates a continuous pressure of 210 bar. The valve can accept pilot pressure as high as 250 bar and shifts once the internal pilot line reaches the 4.5 bar minimum. A built-in throttle orifice of 0.8 mm moderates pilot flow to control shifting speed. When fastening the subplate, the M10 screws are tightened to 58 Nm to secure the housing against leakage. Corrosion resistance is supported by a surface coating that does not exceed 100 µm in thickness. The hydraulic fluid must meet cleanliness class ISO 4406 20/18/15 to maintain dependable operation.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Coil Voltage
24 V DC
Electrical Connector
DIN EN 175301-803
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (x Internal)
4.5 bar
Mounting Pattern
ISO 4401-07-07-0-05
Nominal Size
16 (NG16)
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (X)
Pilot Return Port Y Max Pressure (dc)
210 bar
Screw Tightening Torque (m10)
58 Nm
Spool Positions
3
Surface Coating Thickness
100 µm max
Throttle Orifice Diameter
0.8 mm
Ways
4
1620 Old Apex Road
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