How to make high quality idler? What are the methods to judge the quality of idler?

　　The supporting roller is used to support the conveyor belt and material weight. The idler must be flexible and reliable. Reducing the friction between the conveyor belt and the idler 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, its structure is not complex, but it is not easy to produce high quality idler.

　　The buffer idler is applied to the tailstock according to the actual situation. When receiving the material, it can reduce the impact of the material on the belt, which is conducive to the service life of the belt along the length. The troughed idler is generally composed of two side idler and a flat idler, and the groove angle is generally 30 degrees. For the detachable belt conveyor, the three rollers of the troughed idler are hinged to each other, so it is called the articulated idler. The parallel idler is generally a long roller, which is installed at the lower end under pressure, so it is called the lower idler.

　　The supporting roller is used to support the conveyor belt and material weight. The idler must be flexible and reliable. Reducing the friction between the conveyor belt and the idler 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, its structure is not complex, but it is not easy to produce high quality idler.

　　There are several criteria to judge the quality of supporting roller: radial runout of supporting roller; flexibility of supporting roller; axial displacement.

1、According to the material, it is divided into rubber roller, ceramic roller, nylon roller and insulation roller.

2、There are mainly groove idler group, all kinds of parallel idler group, all kinds of centering idler group, all kinds of buffer idler group.

（1） There are ordinary idler, forward inclined idler, quick change bearing idler, hanging idler, three chain idler, reversible idler, variable groove angle idler, transition idler, V idler, etc;

（2）Parallel idlers include ordinary type idlers, comb type idlers, forward inclined type idlers, steel rubber type idlers, spiral type idlers, etc;

（3）There are universal type, friction reversible type, strong type, cone type, spiral type and combined type idlers;

（4）Buffer idler includes spring plate type idler, buffer ring type idler, strong buffer type idler, adjustable elastic type idler, hanging type idler, etc.