According to the function of the retaining ring, it is divided into three categories

The retaining ring is equivalent to a movable retaining edge, which is used to block the rollers and is easy to install. The structure of the retaining ring includes a flat retaining ring, an inclined retaining ring and a middle retaining ring. Ribs are narrow shoulders that protrude from the raceway surface parallel to the rolling direction and are used to support and guide the rolling elements and keep them in the bearing. The retaining ring mainly plays the role of axial fixation, in which the conical surface and the retaining ring are fixed with a high degree of centering. According to the function of the retaining ring: 1. Flat retaining ring: a separable substantially flat washer, the inner or outer part of which is used as a radial cylindrical roller bearing outer ring or inner ring rib. 2. Inclined retaining ring: a separable ring with an 'L'-shaped section, the outer part of which acts as the inner retaining edge of the radial roller ball bearing. 3. Middle retaining ring: The separable ring in two or more row roller bearings is used to separate and guide the rollers of each row.