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How to maximize the service life of eccentric bearing

How to maximize the service life of eccentric bearing

The service life of eccentric bearing depends on not only the quality of the product itself, but also some important factors.

First, in the stage of bearing selection, many factors (such as load, hardness, operating environment, etc.) need to be considered.

A good eccentric bearing design will first make the bearing reach its large life value.

Second, for correct storage, eccentric bearings should be stored in their original packaging before installation.

It needs to be kept in a clean, moisture-free and relatively constant temperature environment. Rolling bearings should be kept away from dust, water and corrosive chemicals. Shaking and vibration may permanently damage the mechanical properties of the bearing, so vibration should be avoided during handling and storage. Generally, bearings shall be stored horizontally. Some heavier bearings will be deformed due to their own weight after being placed vertically for a long time. In addition, special care should be taken for greased (or sealed) bearings, because the density of grease will change after long-term storage. When the bearing is used for the first time, there will be a certain degree of rotating noise. Therefore, the shelf life of such bearings should be controlled according to the principle of first in first out.

Third, cleaning, which is very important for rolling bearings.

The rotating surface of the eccentric bearing ring is very smooth and sensitive to damage caused by pollutants. Particle impurities will be over rolled by rolling elements and produce local pressure in the bearing, which will eventually lead to permanent material fatigue.

Fourth, full equipment reinstallation, The bearings should be carefully installed and removed using suitable tools (you can refer to the series of videos on bearing disassembly).

You should choose the correct tools. Industry experts estimate that 16% of the premature failure of bearings is caused by incorrect installation. Generally speaking, for a large number of installations, appropriate bearing installation equipment will be adopted. However, in the maintenance or replacement work, the environment is diverse. It is recommended that you refer to the relevant drawings and maintenance manuals, The product manual needs to be read carefully. The components of the bearing should also be kept absolutely clean.

Fifth, install and disassemble carefully, The installation of eccentric bearing has been mentioned many times before (if you have similar problems, here are some articles on bearing installation).

Once again, briefly summarize: 1. Do not apply installation force on the rolling element, which can easily lead to local overload on the contact surface between the rolling element and the race, so as to guide the premature failure of the bearing. 2. Do not use any hard tools (such as hammer, screwdriver, etc. I’ve seen too many “hard” tools with these two tools Installed, too strong) directly knock on the bearing surface, which will lead to fracture or breakage of the bearing ring. 3. Generally, the bearing will not be removed from the equipment, and only the larger bearing will be removed due to preventive maintenance. During disassembly, first use correct tools to ensure that adjacent components are not damaged.

Sixth, with proper lubrication, the lubricant can isolate the bearing surface, so as to reduce friction, protect metal parts and prevent pollution and impurities.

A variety of greases are available for different operating conditions. Because of excessive rolling of rolling parts, bearing lubricants are subjected to long-term mechanical pressure, and the chemical properties of lubricants will change, especially in high temperature, humid or polluted environment for a long time. These will lead to the decline of lubrication quality. Therefore, the eccentric bearing should be re lubricated regularly.

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