Bosch Rexroth | 4WEH10HD4X6EG24N9DAL
4WEH10HD4X/6EG24N9DAL
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The 4WEH10HD4X/6EG24N9DAL valve from Bosch Rexroth belongs to the WEH Directional Spool Valves series and directs hydraulic flow in automated machinery. It is built to the NG10 nominal size, allowing passage of up to 160 l/min through the pressure and work ports. A maximum operating pressure of 350 bar lets the unit handle high-pressure power stages without loss of function. The energized coil operates at 24 V DC and shifts the spool when commanded by the control system. For service work, a concealed manual override labeled N9 lets technicians position the spool without electrical power. The interface follows the ISO 4401-05-05-0-05 porting pattern, letting the valve mount on standard sub-plates with four M6 × 45 screws specified by ISO 4762. These screws require tightening to 12.5 Nm to secure the body against the manifold. With a single solenoid fitted, the assembly weighs 6.4 kg, which supports straightforward handling during cabinet or manifold installation.
Pilot oil is drawn internally from the pressure gallery, denoted by code E, while return flow exits externally through port Y to keep back-pressure away from the pilot stage. The external line may be exposed to as much as 210 bar, and the design permits tank port pressures up to 315 bar without deformation of the housing. Reliable end-position switching requires a minimum pilot pressure of 7 bar; the pilot circuit can rise to 250 bar without impairing spool travel. Hydraulic cleanliness must reach ISO 4406 class 20/18/15 to protect the precision-ground lands and seals from abrasive wear. By keeping the recommended fluid quality, the valve maintains repeatable actuation and extends service life under cyclic loads. Together, these limits and supply paths support consistent spool response within compact actuator packages used across presses, injection units, and mobile platforms.
Technical Specifications
Bolt Tightening Torque
12.5 Nm
Cleanliness Class
ISO 4406 20/18/15
Coil Voltage
24 V DC
Manual Override
Concealed (N9)
Max Flow (ng10)
160 l/min
Max Operating Pressure (p, A, B)
350 bar
Max Pilot Pressure
250 bar
Max Tank Port Pressure (t)
315 bar
Min Pilot Pressure (hyd. End Position)
7 bar
Mounting Bolts
4x M6 x 45 (ISO 4762)
Nominal Size
NG10
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (E)
Pilot Return Y Max Pressure (dc)
210 bar
Porting Pattern
ISO 4401-05-05-0-05
Weight (one Solenoid)
6.4 kg
1620 Old Apex Road
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