Bosch Rexroth | 4WEH10G4X6EW110N9TSDA
4WEH10G4X/6EW110N9TSDA
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The 4WEH10G4X/6EW110N9TSDA directional spool valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth. It shifts flow by electro-hydraulic actuation that turns an electrical command into pilot oil movement. A high-power pilot valve drives a 4-way spool so four flow paths can be selected for cylinder or motor circuits. The valve carries a nominal size of NG10 to match standard manifolds, and a spring return centers the spool automatically when control pressure is lost. Pilot pressure can be applied up to 250 bar, providing enough force to move the main spool quickly even under high flow loads.
Stable operation requires at least 12 bar in the pilot circuit when the spring-centered version is used. The main P, A, and B work ports tolerate system pressures up to 280 bar, while internal pilot return at port Ac must stay below 160 bar to prevent backpressure in the pilot stage. A concealed manual override lets maintenance staff shift the spool without electrical power and prevents unintended actuation during normal service. These limits and features define how the valve routes hydraulic power accurately and safely in automated machinery.
Technical Specifications
Actuation
Electro-Hydraulic
Manual Override
Concealed
Max Pilot Pressure
250 bar
Max Pressure P, A, B
280 bar
Max Pressure Pilot Return (internal, Ac)
160 bar
Min Pilot Pressure (spring-centered)
12 bar
Nominal Size
NG10
Pilot Valve Type
High-power valve
Spool Return
Spring
Ways
4-Way
1620 Old Apex Road
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