What are the two main types of antifriction bearings?

The two main types of antifriction bearings are ball bearings and roller bearings. Ball bearings utilize spherical balls to reduce friction between moving parts, allowing for smooth rotational movement. They are ideal for applications where speed and lower friction are prioritized.

Roller bearings, on the other hand, use cylindrical rollers to provide a larger contact area with the races, which allows them to handle heavier loads than ball bearings. They are particularly suited for applications involving high radial loads.

Understanding these two types of bearings is crucial for selecting the appropriate bearing for different mechanical applications, as they each offer distinct advantages based on load capacity and friction characteristics.