Buffer rollers are used in belt conveyor material to mitigate the impact of falling material on conveyor belts, mainly for coal washing plants, coking plants, chemical plants and other corrosive environment and developed a class of rollers, it has its own toughness is more than 10 times that of ordinary metals, life is five times that of traditional column shoes, corrosion-resistant flame retardant, anti-static, self-weight and so on, widely used in mining. The polymer material dedicated to the roller body, whose mechanical properties are similar to bronze, has good wear resistance, and has good self-lubricating properties, does not hurt the belt. The anti-corrosion performance of the buffer roller is superior. Rollers and seals are made of polymeric materials and are resistant to corrosion. In corrosive applications, the service life can reach more than 5 times that of ordinary rollers.