Centering idlers （self-aligning roller）have four types: vertical type, frictional type, conical type and self-aligning type (see figure 13, 14 and 15).  Centering idlers are used for avoid belt deviation.
1. Product overview
The structure of aligning roller group is reasonable, low resistance, work reliability and sensitive reaction, with the help of side thrust generated by belt deviation can automatically repeated correction.
For a variety of industrial and mining enterprises, especially for coal, mines, cement plants and other harsh production environments, no failure, no lag, strong and durable, easy to maintenance.
2. Structure and characteristics
High performance self-aligning roller group mainly include: roller bracket, beams, connecting rod, roller, vertical roll, etc.
Using vertical roll drive crank arm, crank arm push rod, rod push adjusting frame. According to the deviation situation and using tangential force of roller, to control rotation angle of adjusting frame. It can achieve continuous adjustment, low- resistance, and high torque.