Bosch Rexroth | 4WEH32J6X6EW110N9EDK25LB10
4WEH32J6X/6EW110N9EDK25L/B10
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The 4WEH32J6X/6EW110N9EDK25L/B10 directional valve is produced by Bosch Rexroth and belongs to the WEH Directional Spool Valves series. It is intended to route pressurized fluid to various actuator ports in electro-hydraulic automation. Actuation is electro-hydraulic, so solenoid energy shifts a pilot stage that in turn moves the main spool. The nominal size is 32, giving the internal cavities the cross-section needed for a maximum flow of 1100 l/min. Continuous service at 280 bar is permitted on pressure, A, and B ports, allowing the valve to control high-pressure circuits. Pilot oil is taken internally from the P port, eliminating an external feed line, while the pilot oil is returned through an external Y port to avoid backpressure. Fluid cleanliness must reach ISO 4406 class 20/18/15 to preserve reliable spool movement.
The tank port is limited to 250 bar, matching the maximum operating pressure specified for port T. Pilot circuitry can be supplied up to 250 bar, and the spring-centered three-position model needs at least 8.5 bar to initiate spool travel. Achieving the shortest switching time calls for a pilot flow of 45 l/min and displacing a pilot volume of 29.4 cm³. A throttle insert with a 1.0 mm orifice, identified as option B10, is fitted to tune pilot damping for stable shifts. The valve mounts on a subplate that follows interface ISO 4401-10-09-0-05, simplifying replacement within standardized manifolds. Total mass is 41.0 kg for the two-solenoid, spring-centered version, which influences lifting and support requirements during installation.
Technical Specifications
Actuation Type
Electro-Hydraulic
Cleanliness Class
ISO 4406 20/18/15
Max Flow
1100 l/min
Max Operating Pressure (p,a,b)
280 bar
Max Operating Pressure (t)
250 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (3-pos, Spring-centered)
8.5 bar
Mounting Interface
ISO 4401-10-09-0-05
Mounting Type
Subplate Mounting
Nominal Size (ng)
32
Pilot Flow For Shortest Switching
45 l/min
Pilot Oil Return
External (Y)
Pilot Oil Supply
Internal (P)
Pilot Volume For Switching
29.4 cm3
Throttle Insert
Ø 1.0 mm (B10)
Weight (2-solenoid, Spring-centered)
41.0 kg
1620 Old Apex Road
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