Bosch Rexroth | 4WEH16HD7XOF6EW110N9ETK4-CSA
4WEH16HD7X/OF6EW110N9ETK4 CSA
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The 4WEH16HD7X/OF6EW110N9ETK4 CSA valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and is intended for switching flow paths in hydraulic automation circuits. Electro-hydraulic actuation moves the main spool with reduced electrical effort, and the housing is built to the NG16 size. Its porting pattern follows ISO 4401-07-07-0-05, allowing direct assembly on a standard subplate. Two hydraulic end positions identified by spool symbol D provide the selectable flow states, while a pair of detented pilot solenoids keeps the chosen position engaged after the command signal is removed. Internal pilot supply and return passages simplify plumbing, and a concealed manual override permits local shifting when power is unavailable. The solenoids connect through a DIN EN 175301-803 K4 plug to suit common industrial wiring practices.
The valve accommodates up to 300 l/min through the hd gallery and sustains operating pressures of 280 bar at ports P, A, and B. The pilot stage tolerates pressures to 250 bar yet needs at least 14 bar to actuate reliably, ensuring dependable function across a typical system range. Fixing hardware consists of four M10 × 60 screws specified by ISO 4762, and each fastener must be tightened to 58 Nm with a ±10 % allowance to maintain joint integrity under load. These parameters together define the hydraulic capacity, electrical interface, and installation requirements necessary for consistent service in automated machinery.
Technical Specifications
Actuation
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (hd, Ng16)
300 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (hd, Ng16)
14 bar
Mounting
Subplate
Mounting Screws
4x M10 x 60 (ISO 4762)
Pilot Solenoids
2 (Detent)
Pilot Supply/return
Internal/Internal (ET)
Porting Pattern
ISO 4401-07-07-0-05
Screw Torque
58 Nm (±10%)
Size
NG16
Spool Positions
2 (Hydraulic End)
Spool Symbol
D
1620 Old Apex Road
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