Bosch Rexroth | H-4WEH32J6X6EW110N9DA
H-4WEH32J6X/6EW110N9DA
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The H-4WEH32J6X/6EW110N9DA directional spool valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth. It is a 4-way valve with three spool positions and relies on electro-hydraulic actuation to shift flow paths in automated hydraulic circuits. The nominal size is NG 32, enabling passage of large volumes, and the design supports a maximum flow of 1100 l/min for high-capacity systems. Port A and B can be pressurized up to 350 bar, allowing the valve to control high-pressure work lines. When spring-centered, reliable switching begins at a pilot pressure of 8.5 bar, while a concealed manual override permits local shifting during commissioning or power loss.
The unit fits manifolds machined to porting pattern ISO 4401-10-09-0-05 and is secured with six M20 × 80 ISO 4762 screws, simplifying standardized block mounting. Under the same 350 bar system pressure, the spring-centered flow rating is 680 l/min, and the separate T port tolerates up to 250 bar during return flow. Pilot return line Y may reach 160 bar, whereas the pilot stage itself is limited to 250 bar to protect internal components. Operation requires hydraulic fluid cleanliness of ISO 4406 class 20/18/15 to maintain spool accuracy, and the calculated mean time to dangerous failure is 100 years, indicating long service life in continuous duty.
Technical Specifications
Actuation
Electro-Hydraulic
Hydraulic Fluid Cleanliness
ISO 4406 (20/18/15)
Manual Override
Concealed
Max Flow
1100 l/min
Max Operating Pressure (p, A, B)
350 bar
Max Operating Pressure (port T)
250 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
8.5 bar
Mounting Screws
6 × M20 × 80 (ISO 4762)
Mttfd Value
100 years
Nominal Size
NG 32
Pilot Return Y Max Pressure (ac)
160 bar
Porting Pattern
ISO 4401-10-09-0-05
Qv Max (spring-centered, 350 Bar)
680 l/min
Spool Positions
3
Way Configuration
4-Way
1620 Old Apex Road
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