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How To Determine The Accuracy Grade When Selecting The Type Of KOYO Cylindrical Roller Bearing
How To Determine The Accuracy Grade When Selecting The Type Of KOYO Cylindrical Roller Bearing
2021-12-11
The Necessary Secret Of IKO Rolling Bearing Selection
The Necessary Secret Of IKO Rolling Bearing Selection
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Failure Analysis Of NSK Self-Aligning Ball Bearing

 

The reasons for the failure of NSK self-aligning ball bearing are often multifactorial.

All the influencing factors in the design and manufacturing process will be related to the failure of the bearing, which is difficult to judge by analysis. In general, it can be considered and analyzed from two aspects: use factors and internal factors. Use factors mainly refer to whether the installation, adjustment, use and maintenance, maintenance and repair meet the technical requirements. The installation condition is one of the primary factors in the use factors.

 

The improper installation of the bearing often leads to the change of the stress state between the parts of the whole bearing. NSK self-aligning ball bearing operates under abnormal conditions and fails early. According to the technical requirements of bearing installation, use, maintenance and repair, monitor and inspect the load, speed, working temperature, vibration, noise and lubrication conditions of the running bearing, find out the causes immediately and adjust them to make them return to normal. In addition, it is also important to analyze and test the quality of grease and the surrounding medium and atmosphere.

Failure Analysis Of NSK Self-Aligning Ball Bearing
 
Internal factors mainly refer to the three major factors that determine the bearing quality, such as structural design, manufacturing process and material quality.

First of all, the reasonable design and advanced nature of the structure will lead to longer bearing life. The manufacturing of bearings generally goes through multiple machining processes such as forging, heat treatment, turning, grinding and assembly. The rationality, advanced nature and stability of all the processing technologies will also affect the life of bearings. The heat treatment and grinding processes that affect the quality of finished bearings are often more directly related to the failure of bearings. In recent years, the research on the metamorphic layer of bearing working surface shows that the grinding process is closely related to the bearing surface quality.

 

The metallurgical quality of NSK self-aligning ball bearing material was once the main factor affecting the early failure of rolling bearing. 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 factor in bearing failure analysis has decreased significantly, but it is still one of the main influencing factors of bearing failure. Proper material selection is still a factor that must be considered in bearing failure analysis. The main task of failure analysis of NSK self-aligning ball bearing is to find out the main factors causing bearing failure according to a large number of background materials, analysis data and failure forms, so as to put forward targeted improvement measures, prolong the service life of the bearing and avoid sudden early failure of the bearing.

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