Buffer roller (impactidler), the buffer roller is used to reduce the impact of the falling material on the conveyor belt at the receiving part of the belt conveyor. It is a type of roller that is mainly developed for corrosive environments such as coal washing plants, coking plants, and chemical plants. Its toughness is more than 10 times that of ordinary metals, and its lifespan is five times that of traditional pillar shoes. It is flame-retardant, and light weight. It is widely used in mining. The special polymer material for roller body has mechanical properties similar to bronze, has good properties, and has good self-lubricating properties and does not damage the belt. The buffer roller has superior anti-corrosion performance. The roller body and the seal are made of polymer materials. Used in corrosive occasions, the service life can reach more than 5 times that of ordinary rollers.

The buffer roller is light in weight and has low rotational inertia. The special polymer material for the roller is light in weight, and its specific gravity is one-seventh of the steel. The weight of the roller made of this material is about one-half of the ordinary roller. The rotation inertia is small, and the friction between the roller and the belt is small.