Effect of Foreign Particles on Vibration Rise of Ball Bearings in Oil Lubrication

Abstract

Examples, whose causes are intrusions of foreign matter from outside in the damage of rolling bearings, are increasing. When the intrusions of foreign matter invade into a bearing, it will cause a flaking of surface origin type. Though researches for the flaking of surface origin type have been performed, there are few cases to study the influence to the increment of vibration. Therefore, this research investigates the influence of intrusions of foreign matter to the increment of vibration in rolling bearings experimentally with paying attention to the relationship between oil film thickness (formed between rolling elements and raceway), hardness of intrusion, intrusion diameter and consistency, with getting intrusions mixed in with lubricant oil.