When aligning two shafts, what two types of misalignment must be checked and corrected?

When aligning two shafts, it is essential to check and correct both parallel and angular misalignment to ensure optimal performance and longevity of the machinery.

Parallel misalignment occurs when the shafts are offset from one another in the same plane. This type means that the centers of the two shafts are not perfectly aligned along a straight line. If this misalignment is not addressed, it can lead to increased wear on bearings, overheating, and potential failure of the components.

Angular misalignment, on the other hand, refers to a situation where the shafts are not aligned at the correct angle, meaning they form a wedge at the point where they connect. This can happen even if the shafts are parallel but are not aligned correctly at the coupling. Such misalignment can cause excessive vibration and increase the likelihood of mechanical failure.

Correcting both parallel and angular misalignments is crucial to ensure that the shafts rotate smoothly in relation to one another, thereby reducing wear and tear and extending the life of the equipment.