The friction idler has a very strong ability to prevent the belt from being damaged and deviating. It uses the deviation mechanism of the friction resistance and the arc of the friction wheel to prevent and correct the deviation of the belt and achieve the self-aligning effect. Friction idlers are widely used in metallurgy, chemical industry, coal, building materials and other industries. Friction idlers use standard design and manufacturing technology to improve the design and manufacture of idlers to a high level. The idlers produced have low resistance to rotation, long life, small maintenance workload and high load capacity. The steel tube is a high frequency welded tube specially used for rollers. The tube is depunctured and the roundness is controlled within a special tolerance range. The shaft is made of cold drawn steel machined to standard tolerances. The bearing seat is made of imported cold-rolled steel sheet after multiple processes. The roller housing and the bearing seat are welded together by an automatic welding robot to form a high-strength overall structure.
The idler rollers are classified into self-aligning idler rollers, buffer idler rollers, slotted idler rollers, and parallel idler rollers according to their uses. The function of the self-aligning idler is to correct the deviation of the belt conveyor. Usually, a rotary groove-shaped self-aligning idler is installed on the heavy load section of the conveyor, and a parallel self-aligning idler is installed on the no-load section. The buffer roller 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 beneficial to the service life of the long belt. The trough roller is generally composed of two side rollers and a flat roller. The groove angle is generally 30 degrees. For a detachable belt conveyor, the three rollers of the trough roller are hinged to each other, so Called articulated idler. The parallel idler is generally a long roll, which is called the lower idler because it is installed at the lower end under pressure.