Bosch Rexroth | 4WEH10HD4XOF6EW110N9ETDA
4WEH10HD4X/OF6EW110N9ETDA
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The 4WEH10HD4X/OF6EW110N9ETDA valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth for hydraulic automation that requires reliable flow direction control. It is a size NG 10 unit, so it matches manifolds sized for medium-flow circuits. A four-way configuration allows the valve to route pressure and return lines to two actuator ports. The D-coded spool defines the internal flow paths selected during operation. Two hydraulic end switching positions let the control system choose either actuator direction or block flow when centered is not needed. A hydraulic spool return mechanism moves the spool back to its rest position without springs. The valve passes up to 160 l/min, enabling fast cylinder or motor motion. It withstands 280 bar on ports P, A, and B, making it suitable for high-pressure circuits, while the pilot stage tolerates pressures up to 250 bar for secure actuation under load.
The pilot section engages once the pilot line reaches 7 bar, ensuring consistent shifting even in low system pressure conditions, and it tolerates 160 bar on the internal return line to protect components against back-pressure spikes. Internal pilot oil supply and return minimize external plumbing and keep the installation compact. Actuation is provided by a 4WE6 high-power pilot valve, supplying the force needed to move the main spool quickly. An AC coil identified by the W code lets the solenoid operate directly from common industrial mains, and the DIN EN 175301-803 K4 connector offers a standardized interface for wiring. A concealed manual override, marked N9, lets maintenance staff shift the valve without energizing the coil while keeping the button protected from accidental use. The subplate mounting surface follows ISO 4401-05-05-0-05, allowing interchangeability with other NG 10 components in the manifold.
Technical Specifications
Coil Type
AC (W-Code)
Control Spool Return
Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow Rate
160 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (internal)
160 bar
Min Pilot Pressure
7 bar
Mounting Interface
ISO 4401-05-05-0-05
Pilot Oil Supply/return
Internal (ET)
Pilot Valve Type
4WE6 High-Power (6E)
Spool Symbol
D
Switching Positions
2 (Hydraulic End)
Valve Configuration
4-Way
Valve Size
NG 10
1620 Old Apex Road
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