Bosch Rexroth | 4WEH32J6X6EW110N9DK25L
4WEH32J6X/6EW110N9DK25L
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The 4WEH32J6X/6EW110N9DK25L valve belongs to the WEH Directional Spool Valves series produced by Bosch Rexroth and serves as an electrohydraulic pilot-operated component for automated hydraulic circuits. The valve is built in size NG32, giving a port diameter suitable for large-capacity systems. A maximum operating pressure of 280 bar on the pressure, A, and B ports allows high-power transmission, while the J spool passes up to 1100 l/min at 70 bar to support rapid actuator movement. Pilot supply and return are routed externally through X and Y to isolate the control stage from main flow paths. The pilot stage needs 45 l/min to achieve the shortest switching time, and a spring-centered, three-position version requires at least 8.5 bar to shift. The pilot circuit tolerates up to 250 bar supply pressure and 160 bar return pressure for reliable operation. Hydraulic cleanliness must reach ISO 4406 class 20/18/15 to protect the spool lands and bores from wear.
The valve accepts hydraulic fluid from −20 °C to +80 °C so it can operate during cold starts and high-temperature duty cycles. A viscosity window of 2.8 – 500 mm²/s keeps damping and leakage within design limits across this temperature span. The interface follows the ISO 4401-10-09-0-05 porting pattern, allowing direct mounting on standardized subplates in manifold blocks. Installation uses six M20 × 80 screws, and each fastener must be tightened to 340 Nm to secure the 41.0 kg two-solenoid assembly against pressure forces. The selected fastener arrangement keeps the housing aligned under lateral load from connected lines. These mechanical and fluid limits combine to provide predictable service life in automated hydraulic systems.
Technical Specifications
Fluid Cleanliness Class
ISO 4406 20/18/15
Hydraulic Fluid Temp Range
-20 to +80 C
Max Flow (j Spool, 70 Bar)
1100 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (y, Ac)
160 bar
Min Pilot Pressure (3-pos Spring-centered)
8.5 bar
Mounting Screws
6x M20 x 80
Pilot Flow (shortest Switching)
45 l/min
Pilot Supply/return
External (X,Y)
Porting Pattern
ISO 4401-10-09-0-05
Screw Tightening Torque
340 Nm
Size
NG32
Viscosity Range
2.8 to 500 mm²/s
Weight (two Solenoids)
41.0 kg
1620 Old Apex Road
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