the magnetic forces of industrial gearbox types

In the transmissions treated of the industrial gearbox types , the magnetic forces of attraction act across small gaps between the elements of the mechanism with no contact between them. In contrast with this characteristic, the magnetic gears of the variable gear motor treated in this paper contact one another due to the fact that the orbiting gear is free to move outwardly under the action of the magnetic attraction from the fixed gear and the centrifugal force.