Bosch Rexroth | 4WEH16R7X6EW110N9EK4B10
4WEH16R7X/6EW110N9EK4/B10
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The 4WEH16R7X/6EW110N9EK4/B10 valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series. This electro-hydraulic directional unit shifts a three-position, spring-centered R spool to route flow in automated hydraulic systems. With NG16 porting, it fits mid-size circuits and can pass up to 300 l/min for rapid actuator movement. The body withstands 280 bar operating pressure, permitting use on standard industrial power packs. An ISO 4401-07-07-0-05 mounting interface aligns the ports to common subplates, simplifying replacement and service.
The internal pilot supply comes from port P, and return flow exits through external port Y so back-pressure does not influence spool control. Pilot operation starts at 14 bar and may rise to 250 bar before relief devices are required. Electrical power reaches the solenoids through a DIN EN 175301-803 K4 connector, while a concealed N9 manual override lets technicians shift the valve without energizing coils. A B10 throttle insert with a 1.0 mm orifice slows pilot flow for smoother transitions. Installation uses four M10 × 60 class 10.9 screws tightened to 58 Nm ±10 %, ensuring gasket compression and secure retention.
Technical Specifications
Actuation
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow
300 l/min
Max Operating Pressure
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure
14 bar
Mounting Interface
ISO 4401-07-07-0-05
Mounting Screws
4x M10 × 60 (10.9)
Pilot Oil Return
External (via Y)
Pilot Oil Supply
Internal (from P)
Screw Tightening Torque
58 Nm ±10%
Size
NG16
Spool Positions
3 (Spring-Centered)
Spool Type
R
Throttle Insert
Ø1.0 mm (B10)
1620 Old Apex Road
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