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Essential Knowledge of Rolling Bearings—Bearing Classification
Summary: In China, rolling bearings are classified according to their structural type and Size.
Below is a detailed introduction to the classification methods of rolling bearings:
Rolling bearings have a wide variety of structural forms, and there are many ways to classify them. In China, rolling bearings are classified according to their structural type and size. Structural type classification is based on several aspects: the direction of the load acting on the bearing, the shape of the rolling element, the number of rows of rolling elements in each bearing set, and whether it can be self-aligning during operation. The full name of the bearing is also comprehensively named based on this content; size classification is based on the size of the bearing's outer dimensions.
1. According to the direction of the load or the different nominal contact angles, they are divided into: 1) Radial bearings—Rolling bearings mainly used to withstand radial loads, with a nominal contact angle from 0° to 45°. According to the different nominal contact angles, they are further divided into: (1) Radial contact bearings—Radial bearings with a nominal contact angle of 0°; (2) Angular contact bearings—Radial bearings with a nominal contact angle greater than 0° to 45°.
2) Thrust bearings—Rolling bearings mainly used to withstand axial loads, with a nominal contact angle greater than 45° to 90°. According to the different nominal contact angles, they are further divided into: (1) Axial contact bearings—Thrust bearings with a nominal contact angle of 90°; (2) Thrust angular contact bearings—Thrust bearings with a nominal contact angle greater than 45° but less than 90°.
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