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.

The most common reasons for belt failure are improper belt tension (too loose or too tight), poor alignment, pulley damage or distortion, environment (excessive heat and ozone), and using an improper ...

Pulsating loads, such as those generated by internal combustion engines and compressors, present special problems for V-belt drives. Intermittent forces tend to produce a whipping motion in the belts ...