The M Series magnetic clutch combines the relatively high torque capacity of a spring clutch with the convenience of a conventional electric clutch. It is controlled by a coaxial D.C. solenoid which consumes a mere 2-1/2 watts of power. Size for size, this results in up to 5 times more torque capacity than a conventional electric clutch.
Either the hub or the shaft can be the input or output member available in either clockwise or counterclockwise drive.
Construction and Operation
A rectangular wire spring fits loosely over two adjacent hub drums. One end of the spring is anchored to the hub while a tang on the other end is fastened to the floating control armature.
The stationary coil housing is anchored to a fixed point using the slot provided. When the coil is de-energized, the hub and shaft are free to rotate independenty. When the coil is energized the control armature is attracted to, and adheres to, the shaft hub flange causing the spring to wrap down. the hubs are now coupled together and rotate as a unit. The slight magnetic force is used only to maintain a tightly wrapped spring.