What could happen if pulleys are not aligned in a synchronous belt drive installation?

When pulleys are not aligned in a synchronous belt drive installation, the most significant consequence is that the belt can run against the pulley flanges. This misalignment causes uneven wear on the belt and can lead to premature failure. Additionally, when the belt does not track properly, it can result in increased friction and heat generation, which further deteriorates the components involved.

Proper alignment of pulleys is crucial for the effective functioning of a synchronous belt drive, as it ensures that the belt engages smoothly with the teeth of the pulleys without any obstructions. If the belt is consistently running against the flanges, it may eventually cause misalignment of other parts as well, leading to more extensive mechanical failures in the system. Thus, ensuring correct alignment is vital for the longevity and efficiency of the installation.