The role of the roller is to support the weight of the conveyor belt and the material. The operation of the roller must be flexible and reliable. Reducing the friction between the conveyor belt and the idler roller plays a key role in the life of the conveyor belt, which accounts for more than 25% of the total cost of the conveyor. Although the roller is a small part in the belt conveyor and the structure is not complicated, it is not easy to make a high-quality roller.
There are several criteria for judging the quality of the idler: the amount of radial runout of the idler; the flexibility of the idler; the amount of axial movement.
