Sliding Surface (Roller End / Rib / Flange / Cage)

Straight line scratches on surface of raceways or rolling elements caused during mounting or dismounting of bearing. >>

Scoring is surface damage due to accumulated small seizures caused by sliding under improper lubrication or severe operating conditions. Linear damage appears circumferentially on the raceway and roller surfaces. >>

Cracks in the raceway ring and rolling elements. Continued use under this condition leads to larger Cracks or Fractures. >>