What is the primary purpose of lubrication in bearings?

The primary purpose of lubrication in bearings is to decrease wear. When two surfaces come into contact with each other—such as those found in bearings—friction can cause wear and tear on the materials. Lubrication creates a film between the surfaces, reducing direct contact and minimizing friction, which in turn decreases the wear on the components. Additionally, proper lubrication helps ensure smooth movement and prolonged operation of the bearings, enhancing their performance and lifespan. Effective lubrication can also assist in removing heat generated by friction, although that is a secondary benefit relative to its role in wear reduction.