It is an important part of the belt conveyor, with many types and large quantities. It accounts for 35% of the total cost of a belt conveyor and withstands more than 70% of the resistance, so the quality of the rollers is particularly important.

The role of the rollers is to support the conveyor belt and material weight. 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 idler is a small part in the belt conveyor and the structure is not complicated, it is not easy to manufacture a high quality roller.

The criteria for judging the quality of the rollers are as follows: the amount of radial runout of the idler; the flexibility of the idler; the amount of axial turbulence.

The effect of the radial runout of the idler on the belt conveyor:

In the range of the amount of runout specified by the state, the tape conveyor can be kept running smoothly, otherwise the tape conveyor belt will be resonantly beating, causing material to be thrown and polluting the environment. The higher the belt speed, the more benefit the radial runout got.

The influence of roller flexibility on the belt conveyor:

During the operation of the belt conveyor, the flexibility of the roller is very important. If the roller is not flexible and the rotation resistance coefficient is high, the entire belt conveyor system has to pay more power and consume more. Electricity, sometimes causing tearing of the tape, burning of the motor, and more serious fires