Impact of Different Factors on Bearing Life
Bearing life is an important indicator of bearing operation. Bearing life is affected by many factors, including the operating environment, operation amount, bearing type and material selection. These factors will have different influence on bearing life. This paper will analyze the influence of different factors on bearing life and explain the control methods of these factors.
1. Influence of operating environment on bearing life
The operating environment is one of the main factors that affect bearing life. The vibrating fatigue of the bearing will cause the axle neck and raceway to bear an alternating stress which leads to an increase in bearing temperature, causing destruction and dissolution of the race alloy material and perforation of the race. The operating temperature of the bearing has a great influence on its life. When the temperature is too high, the internal lubricant of the bearing will easily volatilize and fail, leading to a decrease in bearing life. In addition, if the bearing is exposed to dust or humid environment, or is operated in abrasive media such as sand, it will increase the wear of the bearing surface, reduce the life of the bearing and even cause bearing failure.
2. Influence of Operation Range on Bearing Life
The operating amount of bearing is also an important factor affecting its service life. Generally, the higher the operating temperature of the bearing, the shorter the operating life. The installation load of the bearing has a great influence on the bearing service life. If the installation load of the bearing exceeds the allowable load limit, the bearing may be broken due to overload. Therefore, when selecting bearing, the bearing load should also be considered, and the bearing installed should meet the requirements of the design load, so as to avoid overload and reduce the bearing life.
3. Influence of Bearing Type and Material on Bearing Life
The bearing type and material used will also influence the bearing service life. Different bearing types have different service life. The service life of rolling bearing is longer than that of sliding bearing. If the same bearing is made of different materials, the bearing service life will also be different. Therefore, in the design of bearing products, the selection of bearing type and material is also an important part.
4. Control of Bearing Life
To ensure the quality and normal operation of bearing, appropriate control measures should be taken according to the different factors that affect bearing life:
(1) Proper installation and adjustment of bearing. The installation of bearing should strictly follow the requirements of product technical documents. After installation, the bearing should be debugged. The preload must meet the requirements of design and product instructions, and the components of the preload should be in harmony.
(2) Choose the right bearing type, material and internal lubricant according to working conditions and use requirements. Different bearing types, bearing materials and lubricants are suitable for different working conditions and use requirements. For example, if you need to work in oil, grease bearing should be selected; if you need to work in harsh environment, high temperature resistant bearing should be selected.
(3) Pay attention to lubrication and maintenance of bearing. The service life of bearing is closely related to the lubrication status. The quality of the lubricant and the correct lubrication method will directly influence the life of the bearing. Therefore, it is necessary to pay attention to the lubrication and maintenance of the bearing, including using the lubricant specified by the manufacturer, regular inspection and maintenance to ensure the smooth operation of the bearing.
In summary, bearing life is closely related to many factors, such as operating environment, operation load, bearing type and material selection, etc. It is important to consider these factors in the design of bearing products and take appropriate control measures to ensure the service life and normal operation of bearing.
