Bosch Rexroth | 4WE6J73-6XEW110N9K4
4WE6J73-6X/EW110N9K4
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The 4WE6J73-6X/EW110N9K4 valve is produced by Bosch Rexroth within the WE Directional Spool Valves series to shift hydraulic flow paths in automated machinery. It fits valve size 6 cavities that follow the ISO 4401-03-02-0-05 (D03) porting pattern, allowing direct mounting on standard sub-plates. A 110 V, 50/60 Hz solenoid coil energizes the spool; its switch-on power is 220 VA to create the initial magnetic force, while the holding demand drops to 50 VA to limit heat and energy use during steady operation. The coil accepts a ±10 % voltage swing so control cabinets with minor supply variation can still actuate the valve. Electrical connection relies on the DIN EN 175301-803 K4 plug, and internal suppression limits switch-off overvoltage to 500 V to protect relay contacts. Class H insulation with a permissible coil surface temperature of 120 °C resists thermal stress, and an IP65 housing withstands dust ingress and low-pressure water jets.
The hydraulic section handles a maximum operating pressure of 350 bar on working ports, supporting high-force cylinders and motors, while port T is rated for 160 bar to ensure safe tank return flow. Peak flow capacity reaches 60 l/min so medium-duty circuits can cycle without excessive pressure loss. A manual override permits spool actuation during commissioning; it tolerates up to 50 bar back pressure to the tank when used. Heat generated by continuous solenoid duty is dissipated through the winding and frame, and the 120 °C surface limit noted earlier prevents coil damage under worst-case ambient conditions. Mechanical fastening is achieved with four M5 × 50 screws, providing the clamping force required to seal the sub-plate interface against full system pressure.
Technical Specifications
Coil Voltage
110 V (50/60 Hz)
Connector Type
DIN EN 175301-803 (K4)
Holding Power (ac)
50 VA
Ingress Protection
IP65
Insulation Class (ac)
H
Manual Override Max Tank Pressure
50 bar
Max Coil Surface Temp (ac)
120 °C
Max Flow (ac)
60 l/min
Max Operating Pressure
350 bar
Mounting Screws
4× M5 × 50
Port T Max Pressure (ac)
160 bar
Porting Pattern
ISO 4401-03-02-0-05 (D03)
Switch-off Overvoltage Max
500 V
Switch-on Power (ac)
220 VA
Valve Size
6
Voltage Tolerance
±10%
1620 Old Apex Road
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