In order to determine the standard of bearing life, bearing life and reliability are linked.
Due to the difference in manufacturing accuracy and material evenness, even if the same material and the same size of the same batch of bearings are used in the same working conditions, the life span is not the same. If the statistical life is 1 unit, the longest relative life is 4 units, the shortest is 0.1-0.2 units, and the ratio of the longest life to the shortest life is 20-40 times. 90% of the bearing does not produce pitting, the number of revolutions or hours experienced is called bearing rated life.
This article by the east tiger chassis accessories co., LTD. Arrangement