Bosch Rexroth | 4WEH10W4X6EG24N9DK24L210
4WEH10W4X/6EG24N9DK24L2/10
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The 4WEH10W4X/6EG24N9DK24L2/10 directional spool valve is produced by Bosch Rexroth within the WEH Directional Spool Valves series. It directs hydraulic oil in automated circuits requiring a nominal size NG10, giving compatibility with medium-frame manifolds. Flow paths are shifted by a 6E pilot valve that is energized through a 24 V DC coil, so control logic can tie directly into standard machine power supplies. A concealed manual override allows service technicians to move the spool without energizing the solenoid. When open, the valve handles up to 160 l/min, supporting high-volume actuators. Working ports P, A, and B withstand 280 bar, while the pilot stage is limited to 250 bar to protect the control components. A spring-centered design needs at least 12 bar pilot pressure to shift, ensuring positive centering at lower values. The interface follows porting pattern ISO 4401-05-05-0-05, which simplifies block design and replacement across equipment families.
External pilot supply X and external return Y permit independent pressure tuning and avoid tank back-pressure on the spool. In the neutral position, a 2.4 mm² cross-section between A-T and B-T minimizes leakage while keeping residual flow predictable. Four M6 × 45 screws secure the body; each screw is tightened to 12.5 Nm with a ±10% tolerance to maintain seal compression without thread damage. A maximum surface coating thickness of 100 µm protects the housing against corrosion in humid plants. With two solenoids and spring centering, the assembly weighs 6.8 kg, light enough for manifold mounting by a single technician. Average mission time to dangerous failure (Mttfd) is 100 years, offering long service intervals in safety-related circuits. External supply ports, defined screws, and protective coating complete a package intended for dependable hydraulic direction control in automated machinery.
Technical Specifications
Coil Voltage
24 V DC
Manual Override Type
Concealed
Max Flow (ng10, W)
160 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
12 bar
Mounting Screws
4× M6 x 45 (ISO 4762)
Mttfd
100 years
Nominal Size
NG10
Pilot Supply/return
External X; External Y
Pilot Valve Type
6E
Porting Pattern
ISO 4401-05-05-0-05
Screw Tightening Torque
12.5 Nm ±10%
Surface Coating Thickness (max)
100 µm
Weight (2 Solenoids, Spring-centered)
6.8 kg
Zero-pos Cross-section (w)
2.4 mm² (A–T; B–T)
1620 Old Apex Road
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