What are the main weaknesses defined in the use of magnetic gears?

What are the main weaknesses defined in the use of magnetic gears?

What are the main weaknesses defined in the use of magnetic gears? Magnetic gear is driven by magnetic force, which is a gear mesh without mechanical contact. It is precisely because of the non-contact meshing between gears, no friction energy consumption, and smooth transmission that the magnetic gear has the advantages of high efficiency, high reliability and long service life. Secondly, it needs no lubrication, clean, oil free, dustproof and waterproof. It also has overload protection function, which will not damage the reducer in case of overload, and will cut off the transmission relationship at any time in case of overload, not only will the reducer itself not be damaged, but also can protect the prime mover.

It is proposed to define that magnetic gear is a gear mesh without mechanical contact, which is driven by magnetic force.

In the method of high driving torque, gear transmission is widely used, but its basic transmission form has not changed for a long time, that is, it always relies on the meshing of two wheel teeth for transmission. This has brought some problems to gear transmission that cannot be eliminated, such as mechanical fatigue, friction loss, vibration noise, etc. People try to find new ways to solve these problems and use lubrication technology, but the problems still exist.

Historically, permanent magnet gears also have their weaknesses, mainly because of their small transmission torque.