For engineering plastic cages, the performance of each manufacturer is slightly different, but generally similar. This kind of cage is light in weight and suitable for occasions with high rotation speed. And the failure mode of this cage is not sudden burst, so it is more suitable for some occasions where sudden shutdown is not allowed. However, for mining machinery, this cage is not suitable for use due to safety considerations, because its damage does not occur suddenly, but is completely damaged as the temperature gradually rises to a certain level, which is very dangerous for explosive occasions. . At the same time, this cage has a temperature limit, generally -40 ~ 120 ℃:

For brass cages, there is basically no hindrance, but it is not suitable for environments with ammonia. Generally, small bearings do not use copper cages.

For steel cages, there are no restrictions, but large bearings do not use steel cages.