Bearing Fixing Sleeve Company - Fault and Treatment of Imported Bearings in Use

After a period of bearing movement, the vibration and noise remain at a certain level, with a very single frequency spectrum, only one or two times the frequency. Common lubrication methods include oil lubrication and grease lubrication. In addition, solid lubricants are also used for lubrication. The choice of lubrication method depends on the rotational speed of the bearing. The dn value of a bearing is usually used to indicate the speed of the bearing. The dn value limits for fat lubrication and oil lubrication are given. The frequency spectrum exceeding three times the power frequency rarely occurs, and the bearing is in a very stable state, entering a stable working period.

After continuing to run (Windows) and entering the later stage of use, the vibration and noise of the bearing begin to increase, sometimes producing abnormal sounds, but the vibration increases slowly, at which point the absolute value of the bearing suddenly reaches a certain value. At this point, the bearing exhibits an initial failure.

At this point, it is required to closely monitor the bearings and pay close attention to their changes. After that, the cliff value of the bearing began to decline rapidly, approaching the normal value, and the vibration and noise began to increase significantly, with the increase starting to accelerate. When the vibration exceeds the vibration standard (such as ISO2372 standard), the cliff value of the bearing also starts to increase rapidly. When the cliff value exceeds the normal value (the cliff relative standard can be used), we believe that the bearing has entered late failure production, and it is necessary to promptly repair the equipment and replace the bearing.

Imported bearings exhibit the characteristics of late failure, with severe failures (typically shaft holding, burns, sand rack spalling, raceway, bead wear, etc.) occurring for less than a week. The larger the equipment capacity, the faster the rotational speed, and the shorter the interval. Therefore, in actual bearing fault diagnosis, once the characteristics of late faults are found, it is necessary to decisively determine whether the bearing has a fault and arrange maintenance as soon as possible.

The use factor mainly refers to installation（ ā nzhu ā Whether the adjustment, use, maintenance, repair, etc. of ng) meet the technical requirements. According to the technical requirements for the installation, use, maintenance, and maintenance of bearings, monitor and inspect the load, rotation speed, operating temperature, vibration, noise, and lubrication conditions of bearings during operation. If any abnormality is found, immediately identify the cause, make adjustments, and restore it to normal. Installation conditions are one of the primary factors in use. Due to improper installation of the bearing, the stress state between the entire bearing components changes, and the bearing operates under abnormal conditions, ending its life in advance

The internal factors are mainly three factors that determine the quality of bearings, such as structural design, manufacturing process, and materials.

The metallurgical quality of bearing materials (content: extracting metals or metal compounds from ores) was once a major factor affecting early bearing failure. When imported bearings are selected based on load, compared to the point contact of ball bearings, the main components in roller bearings are in line contact, which is easy to bear load and has small deformation after loading. With the progress of metallurgical technology (such as vacuum degassing of bearing steel), the quality of raw materials has been improved. The proportion of raw material quality factors in bearing failure analysis has significantly decreased, but it is still one of the main influencing factors for bearing failure. The selection of suitable materials is still a factor that must be considered in the failure analysis of imported bearings.

After a period of bearing movement, the vibration and noise remain at a certain level, with a very single frequency spectrum, only one or two times the frequency. Common lubrication methods include oil lubrication and grease lubrication. In addition, solid lubricants are also used for lubrication. The choice of lubrication method depends on the rotational speed of the bearing. The dn value of a bearing is usually used to indicate the speed of the bearing. The dn value limits for fat lubrication and oil lubrication are given. The frequency spectrum exceeding three times the power frequency rarely occurs, and the bearing is in a very stable state, entering a stable working period.

After continuing to run (Windows) and entering the later stage of use, the vibration and noise of the bearing begin to increase, sometimes producing abnormal sounds, but the vibration increases slowly, at which point the absolute value of the bearing suddenly reaches a certain value. At this point, the bearing exhibits an initial failure.

At this point, it is required to closely monitor the bearings and pay close attention to their changes. After that, the cliff value of the bearing began to decline rapidly, approaching the normal value, and the vibration and noise began to increase significantly, with the increase starting to accelerate. When the vibration exceeds the vibration standard (such as ISO2372 standard), the cliff value of the bearing also starts to increase rapidly. When the cliff value exceeds the normal value (the cliff relative standard can be used), we believe that the bearing has entered late failure production, and it is necessary to promptly repair the equipment and replace the bearing.

Imported bearings exhibit the characteristics of late failure, with severe failures (typically shaft holding, burns, sand rack spalling, raceway, bead wear, etc.) occurring for less than a week. The larger the equipment capacity, the faster the rotational speed, and the shorter the interval. Therefore, in actual bearing fault diagnosis, once the characteristics of late faults are found, it is necessary to decisively determine whether the bearing has a fault and arrange maintenance as soon as possible.

The use factor mainly refers to installation（ ā nzhu ā Whether the adjustment, use, maintenance, repair, etc. of ng) meet the technical requirements. According to the technical requirements for the installation, use, maintenance, and maintenance of bearings, monitor and inspect the load, rotation speed, operating temperature, vibration, noise, and lubrication conditions of bearings during operation. If any abnormality is found, immediately identify the cause, make adjustments, and restore it to normal. Installation conditions are one of the primary factors in use. Due to improper installation of the bearing, the stress state between the entire bearing components changes, and the bearing operates under abnormal conditions, ending its life in advance

The internal factors are mainly three factors that determine the quality of bearings, such as structural design, manufacturing process, and materials.

The metallurgical quality of bearing materials (content: extracting metals or metal compounds from ores) was once a major factor affecting early bearing failure. When imported bearings are selected based on load, compared to the point contact of ball bearings, the main components in roller bearings are in line contact, which is easy to bear load and has small deformation after loading. With the progress of metallurgical technology (such as vacuum degassing of bearing steel), the quality of raw materials has been improved. The proportion of raw material quality factors in bearing failure analysis has significantly decreased, but it is still one of the main influencing factors for bearing failure. The selection of suitable materials is still a factor that must be considered in the failure analysis of imported bearings.

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