The method for calculating the dynamic load ratings of rolling bearings is described in the ISO 281 standard.The calculation procedure presented there requires reading appropriate values from many tables, dependingon the geometry of the bearing components. This approach makes numerical calculations and quick estimationof the dynamic load ratings for various bearing design variants difficult. Moreover, the tables are discrete(they provide selected values, e.g. for nominal bearing contact angles every 15), and intermediate values,in accordance with the commentary included in the ISO 281 standard, should be calculated using linearinterpolation. However, in reality, the parameters given in the tables are not linearly dependent on each other,which makes this interpolation inaccurate. In the context of the mentioned imperfections of the ISO 281standard, the aim of the work is to simplify the calculation procedure, adapt it to numerical applications,and replace linear interpolation with an appropriate non-linear function. The difference between the valuescalculated according to the proposed formula and the value calculated according to the ISO 281 standard is onaverage less than 0.5%.
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