Bosch Rexroth | 4WEH32G6X6EW110N9EDAB10
4WEH32G6X/6EW110N9EDA/B10
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The 4WEH32G6X/6EW110N9EDA/B10 directional spool valve is produced by Bosch Rexroth in the WEH Directional Spool Valves series. It switches hydraulic flow between service lines in automated machinery that demands rapid, repeatable positioning. The body is built in NG32 size, giving passage dimensions suitable for high flow rates. A spool coded G defines the crossover paths for its three-position function. The port face follows the ISO 4401-10-09-0-05 pattern for direct mounting on a standardized subplate. Installation uses six M20 × 80 screws, each tightened to 340 Nm to resist separation under load. With two solenoids and spring centering, the assembly weighs 41.0 kg, which influences handling and support design. The hydraulic medium must reach cleanliness class 20/18/15 per ISO 4406 to protect the precision lands. Working pressure on the P, A, and B ports is permitted up to 280 bar, while the tank port is limited to 250 bar.
Pilot oil is supplied internally from the main pressure gallery. The return is routed externally so back-pressure does not influence the pilot stage. The dedicated Y port tolerates up to 160 bar without jeopardizing seal integrity. Pilot components are rated for 250 bar, and the spring-centered design requires at least 8.5 bar to shift the spool away from center. A throttle insert with a 1.0 mm orifice can be placed in the pilot line to meter flow and soften actuation shocks. These parameters allow the valve to maintain predictable response and long service life when controlling high-pressure hydraulic circuits.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Max Operating Pressure (p,a,b)
280 bar
Max Operating Pressure (t)
250 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
8.5 bar
Mounting Screws
6x M20 x 80
Mounting Type
Subplate
Pilot Oil Return
External
Pilot Oil Supply
Internal
Pilot Return Y Max Pressure (ac)
160 bar
Porting Pattern
ISO 4401-10-09-0-05
Screw Tightening Torque
340 Nm
Size
NG32
Spool Symbol
G
Throttle Insert
Ø 1.0 mm
Weight (2 Solenoids, Spring-centered)
41.0 kg
1620 Old Apex Road
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