The service life of rolling bearings is defined in terms of revolutions (or operating hours at a specific rotational speed): within this specified life, the bearing should exhibit initial fatigue damage (such as spalling or chipping) on any of its rings or rolling elements. However, both laboratory testing and practical application clearly demonstrate that bearings with identical appearances under identical operating conditions can exhibit significantly different actual lifespans. Additionally, several distinct definitions of bearing “life” exist. One such term is the so-called “working life,” which denotes the actual service duration a bearing can achieve before failure. This failure is typically not caused by fatigue, but rather by factors such as wear, corrosion, or seal damage.