Enter the bearing clearance of small hard particle will drift between two friction surfaces, produce very high contact stress on the friction surface, constitutes a three-body abrasive wear, similar to grinding so bushing and shaft diameter surface wear. Hard particles and high contact stress between the friction surfaces make the friction surface of ductile metal plastic deformation or fatigue, brittle metal friction surface cracking or peeling.
Abrasive wear the scars of SKF bearings are also linear direction consistent with the shaft diameter movement direction.
When edge contact, lack of lubricating oil or oil film rupture would have severe abrasive wear. Abrasive wear causes the shaft diameter and (or) bearing geometry and shape changes, loss of precision, bearing clearances will increase, bearing sharp deterioration in performance in front of the life expectancy. If this situation continues for a long time, would significantly shorten the life of SKF bearings.



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