Bosch Rexroth | 4WE6D6XEW110DK25LSO779
4WE6D6X/EW110DK25LSO779
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The 4WE6D6X/EW110DK25LSO779 directional spool valve belongs to the WE Directional Spool Valves series and is manufactured by Bosch Rexroth for hydraulic automation where electrical actuation selects flow paths. The valve is produced in nominal size 6, allowing it to fit manifolds that follow common NG6 dimensions. Its porting pattern corresponds to ISO 4401-03-02-0-05 so mounting faces align with standardized subplates. The unit withstands a maximum operating pressure of 350 bar at ports P, A, and B to control high-pressure circuits. A maximum flow rate of 60 l/min supports medium-capacity actuators without excessive pressure loss. The tank port tolerates up to 160 bar, which permits back-pressure in return lines. The coil operates from a nominal voltage of 110 V at 50 or 60 Hz, enabling direct connection to industrial power supplies. Rated currents are 0.52 A at 50 Hz and 0.39 A at 60 Hz, which defines conductor sizing and protection devices for the solenoid.
Hydraulic cleanliness requirements specify ISO 4406 (c) 20/18/15, indicating the valve must receive fluid filtered to that particle count to maintain spool accuracy. The coil surface may reach 120 °C during alternating-current duty, so adjacent components should be arranged to tolerate that temperature. A coil nut tightening torque of 4 Nm secures the solenoid while preventing thread damage. Electrical connection is provided by a DK25L five-pole connector that carries power and protective earth in a compact form. An IP65 ingress protection rating shields internal parts from dust and low-pressure water jets, allowing use in typical factory environments. The valve can be installed in any position, giving flexibility in manifold layout. Insulation class H on the coil provides thermal endurance for the winding varnish. The design meets VDE protection class I, requiring a protective earth connection for user safety.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Coil Max Surface Temperature (ac)
120 °C
Coil Nut Torque
4 Nm
Connector Type
DK25L (5-pole)
Ingress Protection
IP65
Installation Position
Any
Insulation Class (ac)
H
Max Flow (ac)
60 l/min
Max Operating Pressure (p, A, B)
350 bar
Max Tank Port Pressure (ac)
160 bar
Nominal Size
6 (NG6)
Nominal Voltage
110 V (50/60 Hz)
Porting Pattern
ISO 4401-03-02-0-05
Rated Current (50 Hz)
0.52 A
Rated Current (60 Hz)
0.39 A
Vde Protection Class
I
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