Misalignment of pulleys during installation will most likely lead to what outcome?

• A. Accelerated belt wear and reduced belt life.
• B. Improved belt efficiency.
• C. Decreased belt tension.
• D. No effect.

Answer: (A)

Pulleys that aren’t aligned cause the belt to track improperly. When the pulleys aren’t in the same plane or aren’t parallel, the belt runs at an angle and rubs against the edges of the sheaves instead of rolling smoothly along the center. This creates uneven contact, edge wear, and increased flexing, which generate extra heat, glazing, cracks, and fraying over time. All of these effects speed up belt deterioration and shorten its life. Misalignment also adds unnecessary friction, reducing overall efficiency, and it doesn’t inherently reduce belt tension or leave the system unchanged. So the most likely result is accelerated belt wear and reduced belt life.