BS ISO 281:2007

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Radial ball bearings
  5.1 Basic dynamic radial load rating
  5.2 Dynamic equivalent radial load
  5.3 Basic rating life
6 Thrust ball bearings
  6.1 Basic dynamic axial load rating
  6.2 Dynamic equivalent axial load
  6.3 Basic rating life
7 Radial roller bearings
  7.1 Basic dynamic radial load rating
  7.2 Dynamic equivalent radial load
  7.3 Basic rating life
8 Thrust roller bearings
  8.1 Basic dynamic axial load rating
  8.2 Dynamic equivalent axial load
  8.3 Basic rating life
9 Modified rating life
  9.1 General
  9.2 Life modification factor for reliability
  9.3 Life modification factor for systems approach
Annex A (informative) - Detailed method for estimating the
                        contamination factor
Annex B (informative) - Calculation of the fatigue load limit
Annex C (informative) - Discontinuities in the calculation of
                        basic dynamic load ratings
Bibliography

Describes methods of calculating the basic dynamic load rating of rolling bearings within the size ranges shown in the relevant ISO publications, manufactured from contemporary, commonly used, high quality hardened bearing steel, in accordance with good manufacturing practice and basically of conventional design as regards the shape of rolling contact surfaces.