1. The ambient temperature of the NdFeB magnet. Because the sintered NdFeB magnet is extremely sensitive to the working temperature, the instantaneous maximum temperature and continuous maximum temperature of the environment may cause different degrees of demagnetization of the magnet, including reversible and irreversible, Recoverable and non-recoverable

2. The existence of alternating magnetic field of NdFeB magnet. Anyone who has a certain understanding of magnets knows that magnets are divided into N,S poles or multipoles. If there is another magnetic field influence around the NdFeB magnet, it will cancel part of the magnetic force of the magnet. This is also said in the use of temperature range will also be demagnetization.

3. The mechanical vibration of the NdFeB magnet is related to the assembly to a certain extent. The magnet rubs the product during the assembly process. Because the material characteristics of the NdFeB magnet are fragile, the body wears and the size becomes smaller. Thus the magnet will slowly weaken.