Bosch Rexroth | 4WEH32D6XOF6EW110N9ETK4
4WEH32D6X/OF6EW110N9ETK4
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The 4WEH32D6X/OF6EW110N9ETK4 belongs to the WEH Directional Spool Valves series produced by Bosch Rexroth and is used to switch hydraulic flow paths in automated equipment. It is built in size NG32, so the housing accommodates large passage areas for high-flow circuits. The unit employs a 4-way, 2-position layout, allowing it to connect pressure supply to either service port while simultaneously venting the opposite side. Spool symbol D defines the internal land arrangement that produces this switching logic. Subplate mounting simplifies exchange because the valve can be lifted from the manifold without disturbing pipework. An ISO 4401-10-09-0-05 porting pattern keeps the sealing face compatible with common NG32 manifolds. Pilot oil is supplied and returned internally, coded ET, so no external pilot lines are required. The detent mechanism holds the spool in its last actuated position until a new pilot signal arrives, removing the need for continuous solenoid energizing. The pilot stage operates between 10 bar and 250 bar, providing reliable shifting under a wide range of system pressures.
The device carries a maximum operating pressure of 280 bar on ports P, A, and B, matching the requirements of high-pressure industrial circuits. At that pressure it can pass up to 480 L/min, enabling rapid cylinder or motor movement in large hydraulic drives. A concealed manual override identified by code N9 lets maintenance staff shift the spool mechanically when electrical control is unavailable. Electrical power is fed through a DIN EN 175301-803 connector, option K4, which offers a standardized plug interface for the solenoids. Fluid cleanliness must reach ISO 4406 class 20/18/15 so internal clearances remain free from abrasive contamination. These performance limits allow the unit to control large presses, manipulators, or injection-mold tooling without supplemental flow-control valves.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Detent
With Detent
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow (d @ 280 Bar)
480 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (2-spool Spring)
10 bar
Mounting Style
Subplate
Pilot Oil Return
Internal (ET)
Pilot Oil Supply
Internal (ET)
Porting Pattern
ISO 4401-10-09-0-05
Positions
2 Positions
Size
NG32
Spool Symbol
D
Way Configuration
4-Way
1620 Old Apex Road
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