A Study on the Effects of Ball Defects on the Fatigue Life ...
balls in each bearing with scars varied depending on the purpose of the test. If the test was conducted to study the influence of scar size on bearing fatigue life, then all the balls in the bearings contained scars for a total of 64 scars (4 bearings per test, 8 balls per bearing, and 2 scars per ball). Statistical analysis