Why not recommend bearing secondary use?

Bearing, as a core component in mechanical operation, its quality and reliability directly affect the life and operation efficiency of equipment. However, in order to save costs, many users will consider the second use of old bearings. So, can the bearing be used twice? Let's look at this from several angles.

First of all, it is very important to understand how bearings work. Bearings are mainly used to reduce friction and operate in environments with high load and frequent rotation. Any slight damage or wear will greatly affect its performance. In other words, even a seemingly intact bearing may already have tiny cracks or wear inside it, which will quickly develop into a serious failure in subsequent use.

Bearings will suffer various forms of wear during use, including contact fatigue, corrosion, abrasive wear and so on. Even under the most ideal working conditions, bearings are doomed to wear. For example, in industrial production equipment, bearings running at high speed will generate a lot of heat due to friction, which will lead to metal fatigue and deformation over a long period of time. In addition, even if the used bearings are in good appearance, the internal lubricating oil and seals may have failed. It is very easy to fail in a short time, and even cause more serious mechanical accidents.

A more intuitive example is: automobile hub bearings. This kind of bearing is subjected to high-speed operation, heavy load and harsh road environment all year round, even after professional testing and maintenance, it is difficult to restore to a new state. Most service manuals clearly state that bearings need to be replaced once removed.

In summary, the secondary use of bearings is not a recommended practice. Although it may save costs in the short term, in the long run, it increases the risk of equipment failure, and may even bring expensive maintenance costs and security risks. Choosing high-quality new bearings, regular maintenance and replacement is the best solution to ensure the efficiency and safety of equipment operation.