“Replace chains when ‘stretch’ exceeds 2% of their original length,” says Greg Madlinger, Daido Chain. If a chain’s original length is unknown, consider this: The distance between the pins on a roller ...

About one-third of the electric motors in the industrial and commercial sectors use belt drives. Belt drives provide flexibility in the positioning of the motor relative to the load. Pulleys (sheaves) ...

Over-tensioning shortens not only the life of V-belts but also that of the sheaves, electric motor, and driven equipment bearings. In extreme cases, it can even bend or break a motor shaft.