Bosch Rexroth | 4WEH16C7X6EW110N9K4
4WEH16C7X/6EW110N9K4
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The 4WEH16C7X/6EW110N9K4 valve is part of the WEH Directional Spool Valves series from Bosch Rexroth and is installed to switch hydraulic flow paths in automated machinery. It employs electro-hydraulic actuation, so an electrical signal shifts the hydraulic pilot, moving the NG16 size main spool. A 4-way flow path with two spool positions gives the system two discrete operating states, and the C spool symbol defines the internal porting arrangement chosen for this model. The mounting surface follows ISO 4401-07-07-0-05, allowing direct bolt-on assembly to standard subplates. Electrical hookup is completed through a DIN EN 175301-803 K4 connector, while a concealed N9 manual override lets maintenance staff move the spool without power. The unit weighs 8.5 kg, which must be considered when designing manifold supports.
The valve tolerates a maximum operating pressure of 280 bar at ports P, A, and B; port T is limited to 250 bar, and port Y (ac) may be loaded to 160 bar. A high-power 6E pilot valve supplies the force required to shift the main stage, provided the pilot circuit delivers at least 14 bar and not more than 250 bar. When fully open, the flow rating reaches 300 l/min, matching many mid-frame pump groups without excessive pressure loss. These pressure and flow capabilities allow the component to control cylinders or motors that need fast movement yet still hold position securely when de-energized. Together, the pressure limits, pilot range, and flow rating establish the hydraulic envelope within which the valve can operate reliably in production equipment.
Technical Specifications
Actuation Type
Electro-Hydraulic
Electrical Connector
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Operating Pressure (p/a/b)
280 bar
Max Pressure Port T
250 bar
Max Pressure Port Y (ac)
160 bar
Maximum Flow (ng16)
300 l/min
Maximum Pilot Pressure
250 bar
Minimum Pilot Pressure
14 bar
Mounting Interface
ISO 4401-07-07-0-05
Pilot Valve
High-Power 6E
Size
NG16
Spool Positions
2
Spool Symbol
C
Way Configuration
4-way
Weight (approx.)
8.5 kg
1620 Old Apex Road
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