What are the four main parts of an anti-friction bearing?

The four main parts of an anti-friction bearing include the outer race, inner race, separator, and rolling elements.

The outer and inner races are the primary structural components of the bearing. The outer race provides a stationary surface that is often mounted in the housing, while the inner race fits onto the rotating shaft. The rolling elements, which can be balls or rollers, rest between these races and facilitate smooth motion as they roll rather than slide against the surfaces, reducing friction and wear.

The separator, also referred to as a cage, is crucial in maintaining the spacing between the rolling elements. It helps to prevent metal-to-metal contact and reduces friction among the rolling elements while ensuring they are properly aligned and supported.

Overall, understanding these components is essential as they contribute to the efficiency and longevity of the bearing in various applications. This knowledge assists in recognizing the importance of each part in the bearing's functionality and in performing correct maintenance or replacements.