The method of calculating the bearing capacity of rolling bearings is described in the ISO 281 standard. The
calculation procedure for roller thrust bearings presented there, depending on the value of the nominal bearing
angle, requires the selection of one of two formulas. Then, using the table, one reads the value of the factor
depending on the geometry of the bearing components. To facilitate and speed up calculations (and perhaps
also increase their accuracy), this article proposes a formula that is adapted to numerical applications, replaces
linear interpolation with a proper non-linear function and allows calculations to be made for a specific value
of the nominal bearing angle, but not within the range of 15°. The difference between the values calculated
according to the proposed formula and the value calculated according to ISO 281 is, on average, around 3%.
