Bosch Rexroth | 4WEH32J6X6EW110N9TK4
4WEH32J6X/6EW110N9TK4
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The 4WEH32J6X/6EW110N9TK4 valve belongs to the WEH Directional Spool Valves series and is produced by Bosch Rexroth for routing pressurized oil in automated hydraulic systems. With a nominal size of NG32, the body carries large passages for production machinery. When operated with spool J it passes up to 680 l/min at 350 bar, making it suitable for high-flow circuits. The pressure rating for ports P, A, and B is 280 bar, while the external drain at port T is limited to 250 bar to protect tank lines. Pilot actuation is available between a minimum of 8.5 bar and a maximum of 250 bar so the spool can shift cleanly under varying supply conditions. A pilot volume of 29.4 cm³ governs the amount of control oil required for each stroke, and oil entering the valve must meet cleanliness class 20/18/15 under ISO 4406. The subplate interface follows porting pattern ISO 4401-10-09-0-05.
For mechanical mounting the housing is clamped with six M20 × 80 screws conforming to ISO 4762, each tightened to 340 Nm to maintain gasket compression and resist service vibration. If flow trimming is necessary, the integrated stroke adjuster alters spool travel by 1.5 mm per full turn, giving maintenance staff a predictable setting for commissioning. The spring-centered variant equipped with two solenoids weighs 41.0 kg, so hoisting hooks and rigid subplates are recommended during installation. In continuous duty the component achieves a mean time to dangerous failure of 100 years, offering a long statistical life for safety-related hydraulic controls. These mechanical and reliability figures complement the hydraulic limits defined earlier and help designers verify mounting, adjustment, and service intervals.
Technical Specifications
Fluid Cleanliness Class
20/18/15 (ISO 4406)
Max Flow At 350 Bar (spool J)
680 l/min
Max Pilot Pressure
250 bar
Max Pressure (p, A, B)
280 bar
Max Pressure At Port T (y External)
250 bar
Min Pilot Pressure
8.5 bar
Mounting Screw Quantity
6
Mounting Screw Torque
340 Nm
Mounting Screws
M20 x 80 (ISO 4762)
Mttfd
100 years
Nominal Size
NG32
Pilot Volume (3-position)
29.4 cm3
Porting Pattern
ISO 4401-10-09-0-05
Stroke Adjustment Per Rotation
1.5 mm
Weight (2 Solenoids, Spring-centered)
41.0 kg
1620 Old Apex Road
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