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Bearings are precision components, and therefore require a great deal of care when used. Even if high-performance bearings are employed, improper use will prevent them from delivering the expected performance and can easily lead to damage to the bearings. Therefore, the following points should be kept in mind when using bearings: 1. Maintain cleanliness of the bearings and their surrounding environment. Even tiny amounts of dust that are not visible to the naked eye can increase bearing wear, as well as vibration and noise. II. Careful attention must be paid during installation. Forced pressing is not allowed, hitting the bearing with a hammer is not permitted, and pressure transmission through the rolling elements is not allowed. III. Use appropriate and accurate installation tools. Try to use specialized tools, and avoid using materials such as cloth and short fibers at all costs. IV. Preventing bearing rust When handling bearings with your hands, make sure to wash off any sweat from your hands thoroughly and apply high-quality mineral oil before proceeding. Special attention should be paid to preventing rust during the rainy season and in summer. However, under certain specific operating conditions, bearings can achieve a longer lifespan than traditionally calculated, especially under light loads. These special operating conditions consist of the rolling surfaces (tracks and rolling elements) being effectively separated by a lubricating film, which prevents surface damage that could be caused by contaminants. In fact, under ideal conditions, the so-called permanent bearing life is possible. Bearing life: The life of a rolling bearing is defined in terms of the number of revolutions (or hours of operation at a certain speed). A bearing within this lifetime should not suffer any initial fatigue damage (flaking or defects) on any of its rings or rolling elements. However, both in laboratory tests and in actual use, it is evident that bearings with the same appearance under identical operating conditions can have significantly different actual lifespans. There are also several different definitions of bearing \"life,\" one of which is the so-called \"service life.\" This refers to the actual lifespan that a bearing can achieve before it gets damaged; such damage is usually not caused by fatigue, but rather by wear and tear, corrosion, seal failure, and other factors. Why do bearings get worn out? Only some bearings get damaged in actual use. There are many reasons why most bearings fail – loads exceeding the original estimates, ineffective sealing, and too small a bearing clearance resulting from overly tight fits. Each of these factors has its own specific type of damage and leaves distinct signs of damage. Therefore, by examining the damaged bearings, the possible causes can be identified in most cases. Generally speaking, one-third of bearing failures are caused by fatigue damage, another third by poor lubrication, and the remaining third by contaminants entering the bearings or improper installation. However, these types of damage are also related to the industry. For example, in the pulp and paper industry, bearing damage is mostly caused by poor lubrication or contamination rather than material fatigue.