In what planes must shafts be aligned correctly?

Shafts must be aligned correctly in both the horizontal and vertical planes to ensure proper operation and minimize wear on the machinery. When shafts are aligned in the horizontal plane, it addresses the alignment of the rotatable components side-to-side. Proper horizontal alignment prevents vibrations and excessive stress on bearings.

In the vertical plane, correct alignment ensures that the shafts are positioned accurately from top to bottom, which is crucial for the vertical load distribution and operational stability of the machinery. Misalignment in either plane can lead to increased wear on the components, operational inefficiencies, and potential failure of the equipment.

The need for alignment in these two planes—horizontal and vertical—is foundational in machinery operation, where precision is critical for performance, longevity, and safety. It is essential to address both planes during alignment procedures to achieve a functional and reliable system.