Magnetic gears utilize magnetic transmission and are gear meshes without mechanical contact. It is precisely because of the non-contact meshing between gears, no frictional energy consumption, and stable transmission that the advantages of high efficiency, high reliability and long service life of magnetic gears are reflected.
Secondly, it does not require lubrication, clean, oil-free, dust-proof and waterproof, etc., and has an overload protection function. It will not damage the reducer when overloaded, and cut off the transmission relationship at any time when overloaded. Not only the reducer itself will not be damaged, but also protect prime mover.
In the method of high drag torque, gear transmission is widely used, but the basic form of transmission has not changed for a long time, that is, the transmission is always carried out by the meshing of the teeth of the two wheels. This has brought some indelible problems to the gear transmission, such as mechanical fatigue, friction loss, vibration noise and so on.
People try to find new ways to solve these problems and adopt lubrication technology, but the problems still exist.
The historical permanent magnet gear also has its weakness, mainly its transmission torque is small.