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Brinelling refers to the formation of small indentations on the bearing raceways or rolling elements, typically as a result of excessive static or oscillatory loads. The most common cause of brinelling is indeed associated with mounting errors, which occurs when bearings are improperly installed or aligned. Such mistakes can lead to uneven loading or excessive stress on specific areas of the bearing surfaces, which in turn contributes to the indentation characteristic of brinelling.

When installations are performed without precise alignment or when improper forces are applied during mounting, it can create misalignment or a lack of support, resulting in the bearing elements experiencing conditions they were not designed to handle. This unjustly high localized load can lead to premature wear and the formation of brinelling marks. Understanding the importance of correct bearing installation and alignment is crucial for maintaining the integrity and performance of equipment.

While over-tightening can also be detrimental to bearings, leading to excessive wear or damage, it is not the most common contributor compared to mounting errors. Similarly, inadequate lubrication and excessive temperature can affect bearing performance but are less directly associated with the formation of brinelling than improper installation. Therefore, recognizing mounting errors as the leading cause of brinelling highlights the critical role of proper installation techniques in maintaining equipment