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Selection of Bearing Sizes

The size of the bearing should be selected on the basis of static load ratings. The permissible load for a bearing is determined by the amount of major deformation to the raceway caused by the load. Loads operating on slow oscillating bearing or a stationary bearing or on rotating bearing can produce flat areas on the rolling elements and indentations in the raceways. If the load operates for a number of times, the deformation will increase and will be evenly spread over the whole raceway, which can lead to vibration in the standard bearing, noise and increased friction. As a result the ball bearing sizes need to be carefully chosen.
Ball Bearing Sizes
One of the most popular type of bearing is the ball bearing. Ball bearings have sizes usually in millimeters, and the balls themselves are sized in inches. The Anti-Friction Bearing Manufacturers Association adopted a classification of ball bearings depending on their construction.

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