Bosch Rexroth | 4WEH32E6X6EW110N9TK4
4WEH32E6X/6EW110N9TK4
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The 4WEH32E6X/6EW110N9TK4 directional spool valve belongs to the WEH Directional Spool Valves series and is manufactured by Bosch Rexroth for hydraulic automation systems that require controlled actuation of large flow rates. With a valve size of NG32, it fits manifolds designed for high flow in heavy machinery. The porting pattern follows ISO 4401-10-09-0-05, allowing direct mounting to standardized subplates. A flow limit of 750 l/min supports rapid cylinder movement at pressures up to 280 bar on ports P, A, and B. The spool symbol is type E, giving three operational positions for forward, reverse, and neutral flow paths. Pilot supply is taken from an external X port, ensuring stable actuation even when system pressure fluctuates. Pilot return is routed internally to the T port, simplifying external plumbing. A concealed manual override identified as N9 lets service staff shift the spool when electrical signals are absent.
Electrical power reaches the solenoids through a DIN EN 175301-803 K4 connector, providing a common industrial interface for wiring. The pilot stage tolerates pressures up to 250 bar, while the internal pilot return circuit is limited to 160 bar when powered by AC coils, defining safe operating ranges. Drain flow leaving the T port may see a maximum of 250 bar, so downstream components must match this rating. A spring-centered design needs at least 8.5 bar pilot pressure to move the spool, and it displaces 29.4 cm³ of pilot oil each cycle, data that assists in sizing accumulators and control lines. Six M20 × 80 screws per ISO 4762 secure the housing to the manifold and resist hydraulic loads. NBR sealing elements contain fluid compatible with standard mineral oils and help maintain leak-free operation.
Technical Specifications
Electrical Connection
DIN EN 175301-803 (K4)
Flow Limit (e, 280 Bar)
750 l/min
Manual Override
Concealed (N9)
Max Operating Pressure (p,a,b)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (internal)
160 bar (AC)
Max Pressure (t Port)
250 bar
Min Pilot Pressure (spring-centered)
8.5 bar
Mounting Screws
6× M20×80 (ISO 4762)
Pilot Return
Internal (to T)
Pilot Supply
External (X Port)
Pilot Volume (spring-centered)
29.4 cm³
Porting Pattern
ISO 4401-10-09-0-05
Seal Material
NBR
Spool Symbol
E (3-Position)
Valve Size
NG32
1620 Old Apex Road
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