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When electric current passes through a bearing, arcing and burning occur through the thin oil film at points of contact between the raceway and rolling elements.
Straight line scratches on surface of raceways or rolling elements caused during mounting or dismounting of bearing.
Among the different types of Fretting, false brinelling is the occurrence of hollow spots that resemble brinell dents and are due to Wear caused by vibration and swaying at the contact points between the rolling elements and raceway.
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