What Is A Rolling Bearing

Rolling bearings are divided into radial bearings and thrust bearings based on the direction of load they can withstand or the nominal contact angle. Radial contact bearings are radial bearings with a nominal contact angle of 0, while radial contact bearings are radial bearings with a nominal contact angle greater than 0 to 45. Axial contact bearings are thrust bearings with a nominal contact angle of 90, and thrust angular contact bearings are thrust bearings with a nominal contact angle greater than 45 but less than 90.
According to the shape of the rolling element, it can be divided into ball bearings and roller bearings. Roller bearings are divided into cylindrical roller bearings, needle roller bearings, tapered roller bearings, and self-aligning roller bearings according to the type of roller.
According to whether it can be aligned during operation, it can be divided into aligning bearings - bearings with spherical raceways that can adapt to the angular deviation and movement between the axis lines of two raceways, and non aligning bearings (rigid bearings) - bearings that can resist the angular deviation of the axis lines between raceways.
According to the number of rows of rolling elements, they are divided into single row bearings, double row bearings, and multi row bearings.
It can be divided into separable bearings and non separable bearings based on whether its components (rings) can be separated.
According to its structural shape (such as whether there is a filling groove, whether there are inner and outer rings, the shape of the ferrule, the structure of the retaining edge, and even the presence or absence of a cage), it can be divided into various structural types.
According to its outer diameter size, it is divided into micro bearings (<26mm), small bearings (28-55mm), small and medium-sized bearings (60-115), large and medium-sized bearings (120-190mm), large bearings (200-430mm), and extra large bearings (>440mm).
According to the application field, it is divided into motor bearings, rolling mill bearings, main bearings, etc.
It is divided into ceramic bearings, plastic bearings, etc. by material.