Bosch Rexroth | 4WEH10D4X6EW110N9DAL
4WEH10D4X/6EW110N9DAL
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The 4WEH10D4X/6EW110N9DAL valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and directs hydraulic flow in automated circuits by shifting a D-type spool with external pilot oil. It is built to nominal size 10 and follows the ISO 4401-05-05-0-05 porting pattern so it mates with standardized subplates. External pilot oil is supplied through port X, while the return is routed through port Y, supporting remote actuation schemes. When energized, the spool passes up to 160 l/min, and working ports P, A, and B can be pressurized to 280 bar without derating. Port T handles the same 280 bar back-pressure, whereas port Y is limited to 160 bar to protect the pilot drain circuit. The pilot stage accepts pressures up to 250 bar, maintaining consistent shifting even in high-pressure systems.
Service parameters match common industrial fluids: viscosity may lie between 2.8 and 500 mm²/s, and temperature can range from –20 to +80 °C when NBR seals are fitted. Oil cleanliness must reach ISO 4406 code 20/18/15 to prevent spool erosion and sticking. A two-spool configuration needs at least 10 bar pilot pressure to move reliably. Installation uses four M6 × 45 screws conforming to ISO 4762, tightened to 12.5 Nm with a ±10 % tolerance to secure the body to the manifold. The solenoid-equipped valve weighs 6.4 kg, so a single technician can mount it easily. These assembly and fluid limits combine to ensure steady switching in mobile or stationary hydraulic actuators.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Hydraulic Fluid Temp Range (nbr)
–20 to +80 °C
Max Flow (spool D)
160 l/min
Max Pressure Port Y (external, Ac)
160 bar
Maximum Operating Pressure (p, A, B)
280 bar
Maximum Pilot Pressure
250 bar
Maximum Pressure Port T
280 bar
Minimum Pilot Pressure (2-spool)
10 bar
Mounting Screws
M6 x 45 (ISO 4762)
Nominal Size (ng)
10
Pilot Oil Return
External Via Y
Pilot Oil Supply
External Via X
Porting Pattern
ISO 4401-05-05-0-05
Screw Torque
12.5 Nm (±10%)
Viscosity Range
2.8 to 500 mm²/s
Weight (one Solenoid)
6.4 kg
1620 Old Apex Road
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