Judgment and Prevention of Common High-Temperature Phenomena in Bearings

High bearing temperatures are a common issue in mechanical equipment; they not only affect the proper operation of the equipment but can also lead to its damage. Correctly identifying and preventing high bearing temperatures is an important measure to ensure the stable operation of equipment. Below are the common causes of high bearing temperatures and their preventive measures: ### Determining high bearing temperature issues 1. **Insufficient lubrication** – The lubricant in the lubrication areas is not applied in the amounts specified by the equipment’s lubrication requirements, resulting in a lack of oil. - Improper oiling of the lubricated areas and incorrect usage have led to inadequate lubrication. 2. **Excessive lubrication** - The lubricant applied to the lubricated areas was not added in accordance with the equipment’s specified amounts; excessive lubrication led to an increase in temperature. - Only grease is added, without cleaning or replacement; excessive blockage of the oil passages leads to an increase in temperature. 3. **Selection and Use** – Improper selection of lubricant types, as well as environmental contamination due to the use of such oils, result in poor lubrication effects. - Lubricants have high viscosity, and when used in low-temperature environments, they generate heat very easily. 4. **Improper assembly** – Damage to the bearing body during assembly, along with poor handling, leads to jamming and heat generation. - The bearing assembly fit is too tight, resulting in an excessively small bearing clearance and increased frictional heating. - The bearing assembly fit is too loose, resulting in excessive bearing clearance and increased frictional heat generation. 5. **Operating environment** – In dusty environments, dust enters the bearings, increasing friction and generating additional heat. - Sealing defects in high-humidity environments reduce the performance of oils, leading to lubrication failure. 6. **Conduction factors** – Imbalance in the movement of the equipment itself causes vibration, which puts additional stress and friction on the bearings, leading to heat generation. - Excessively high process temperatures lead to heat conduction, resulting in an increase in temperature at the bearing area. ### Preventive measures for high-temperature issues in bearings 1. **Lubrication management** – Follow the lubrication guidelines by regularly checking the lubrication status and replacing the oil on schedule according to the specified lubrication cycle. - Avoid excessive lubrication with oil; fill and replace it according to the specifications indicated by the fuel tank gauge and dipstick. Regularly inspect and clean the oil drainage channels to ensure they remain unobstructed. 2. **Correct selection** - Strictly follow the manufacturer’s technical specifications to determine the type and grade of lubricant, and avoid making unauthorized changes. - The fueling areas and lubrication equipment need to be cleaned regularly. 3. **Proper assembly** - Bearings should be installed using hot oil to prevent damage to the component caused by hammering. - Avoid installation issues such as overly loose or tight fitting, increased interference, and crushing of the bearing end caps. 4. **Improve the operating environment** – Improve the operating conditions of the equipment, regularly check the quality of lubricating oil, strengthen sealing to prevent foreign objects from entering. - Improve the operating conditions of the process, identify the specific causes of vibration, and prevent additional stress on the bearings. Through the above measures, bearing overheating issues can be effectively prevented and resolved, ensuring the stable and long-term operation of the equipment. .