Bosch Rexroth | 4WEH32C6X6EW110N9K4
4WEH32C6X/6EW110N9K4
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The 4WEH32C6X/6EW110N9K4 directional valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series. It directs hydraulic flow to actuators in automated systems and supports large circuits. The valve has a nominal size of NG32, allowing high volume throughput, and its maximum flow reaches 1100 l/min when full pressure capacity is available. When operated with symbol C at 280 bar the flow limit is 800 l/min. A maximum operating pressure of 280 bar is permitted at ports P, A, and B so the unit can serve heavy-duty cylinders and motors. Port interfaces follow the ISO 4401-10-09-0-05 pattern, which simplifies manifold mounting. Electrical actuation is wired through a DIN EN 175301-803 K4 connector, while a concealed manual override identified as N9 gives local switching when power is absent. Fluid entering the valve must meet cleanliness class ISO 4406 (c) 20/18/15 to protect internal surfaces.
For the pilot stage the valve tolerates a maximum pilot pressure of 250 bar and needs at least 10 bar to shift the two-spool spring version. Pilot return pressures are limited to 160 bar on internal return port y Ac and 210 bar on internal return port y Dc. When an external return is used on port T, the allowable pressure rises to 250 bar. Each switch cycle displaces 58.8 cm³ of pilot oil, information useful for sizing accumulators in rapid-fire circuits. Mechanical installation uses six M20 × 80 screws, and these fasteners must be tightened to 340 Nm to secure the body against the subplate. These mounting details help prevent leakage and preserve alignment under continuous supply pressure.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override
Concealed (N9)
Max Flow
1100 l/min
Max Flow (symbol C, 280 Bar)
800 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
250 bar
Max Pilot Return Pressure (y Int, Ac)
160 bar
Max Pilot Return Pressure (y Int, Dc)
210 bar
Max Pressure Port T (y Ext)
250 bar
Min Pilot Pressure (2-spool Spring)
10 bar
Mounting Screw Torque
340 Nm
Mounting Screws
6x M20 x 80
Nominal Size
NG32
Pilot Volume Per Switching (2-spool)
58.8 cm³
Porting Pattern
ISO 4401-10-09-0-05
1620 Old Apex Road
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