Nov 30, 2016 · (j) Training Idlers / Roller or Self-Aligning Idlers / Roller : In spite of the rrect alignment of a nveyor structure and belt splice, it is a mmon phenomenon for a belt to misalign at times, mainly as a result of incorrect material loading (off centre) or in cases where a nveyor is mounted onto a mobile stacker / reclaimer where the fall across the boom causes the belt to move to one