Bosch Rexroth | 4WEH16J7X6EW110N9K4V
4WEH16J7X/6EW110N9K4/V
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The 4WEH16J7X/6EW110N9K4/V valve is manufactured by Bosch Rexroth in the WEH Directional Spool Valves series to switch and meter flow in hydraulic automation circuits. It is built in the NG16 size, and the J spool symbol establishes the flow paths selected when each solenoid is energized. With a maximum flow capacity of 300 l/min, the unit can serve medium-to-high demand actuator groups without excessive pressure drop. Service ports P, A, and B tolerate operating pressures up to 280 bar, while the T return port is limited to 250 bar to protect downstream plumbing. Pilot actuation withstands 250 bar so remote control can be taken directly from the main line, yet the spool will still shift reliably once 14 bar of pilot pressure is available in spring-centered mode. These pressure and flow limits define the working envelope for cylinders or motors that rely on this valve for directional control.
The interface pattern ISO 4401-07-07-0-05 allows the valve to mount on standardized subplates, and internal pilot oil supply (E) eliminates an extra feed line. Pilot oil is returned externally through port Y, which is rated for 160 bar to avoid back-pressure-induced malfunction. Electrical actuation is handled through a DIN EN 175301-803 K4 connector that gives quick coil replacement and reliable sealing. FKM seals are used throughout the housing to withstand high-temperature or synthetic hydraulic fluids. Four M10 × 60 screws secure the body, and each screw must be tightened to 58 Nm to maintain gasket compression. The cleanliness class ISO 4406 (c) 20/18/15 sets the allowable particle load in the fluid, ensuring spool movement remains free of abrasion and sticking during long service life.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Max Flow (ng16, Symbol J)
300 l/min
Max Operating Pressure (p/a/b)
280 bar
Max Operating Pressure (port T)
250 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
14 bar
Mounting Screw Torque
58 Nm
Mounting Screws
M10 x 60 (Qty 4)
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (E)
Port Y Max Pressure (ac)
160 bar
Porting Pattern
ISO 4401-07-07-0-05
Seal Material
FKM (V)
Size
NG16
Spool Symbol
J
1620 Old Apex Road
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