The reversing drum, also called a guide drum, is a common key component of belt conveyors. It is mainly used to change the running direction of the conveyor belt or to press the conveyor belt to increase the wrap angle with the drive drum. Reversing drums have the characteristics of compact structure, light weight, small space occupation, reliable performance, attractive appearance, safe and convenient use, and can still work normally under harsh conditions such as heavy dust, humidity, and mud. Reversing drums are mainly located below the moving belt. For example, if the belt moves to the left, the reversing drum is on the right side of the belt conveyor. The main components are bearings and steel drums. The drive drum is the driving wheel of the conveyor. There is no difference in composition between reversing drums and drive drums; both consist of main shaft, drum, bearings, and bearing housing. Drive drums are divided into driving and driven types.