Rolling bearings
Rolling bearings consist of rolling elements (balls
or rollers) between the inner and outer rings, and operate using rolling
friction. They are broadly classified as ball bearings or roller
bearings by the type of rolling element used, and are available in two
types depending on the direction of the load being supported, as radial
bearings that support radial loads, and thrust bearings that support
axial loads.
Ball bearings
Ball bearings are the most common type of rolling bearing that uses balls as the rolling element.
Roller bearings
Roller bearings use rollers as the rolling
element and are available in different types depending on the shape of
the rollers, including cylindrical roller bearings, needle roller
bearings, tapered roller bearings and spherical roller bearings.