Kaydon new capacity calculations for thin-section bearings—a white paper from Kaydon Corporation Bearings Division
05.2009

Muskegon, Michigan, USA...ABMA standard 9 and ISO 281 give equations for calculating the basic dynamic radial load rating for ball bearings. These equations are based on a number of assumptions. Many of these assumptions are not valid for thin-section bearings. (Thin-section bearings are described in ABMA standard 26.2). Nevertheless, many thin-section bearing catalogs report load ratings based on these equations.

Kaydon has developed a new method for calculating the dynamic radial load rating for thin-section ball bearings. The new method uses the contact stress and the number of stress cycles per revolution to calculate the capacity. The new numbers are based on five years of actual test results. These equations can also be used to calculate the dynamic radial load rating for four-point contact ball bearings, which are not covered in standard 9 or ISO 281.

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Kaydon new capacity calculations for thin section bearings
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