Reasons for the failure of NSK imported bearings and the improvement of their claims

Reasons for the Failure of NSK Imported Bearings and Ways to Improve Claims

Source: China Bearing Network | Date: April 6, 2014

Bearing failures are a common issue in mechanical systems, especially with high-quality imported bearings like those from NSK. Understanding the reasons behind these failures is essential to improve performance, extend service life, and reduce maintenance costs. Bearing failure can be broadly categorized into two types: early failure and normal wear and tear. This article focuses on analyzing the causes of early failures, such as pitting and fatigue, and offers practical solutions to enhance reliability. One of the primary causes of NSK bearing failure is surface damage due to plastic deformation and external hardening during the rolling process. As the bearing operates under load, stress accumulates on the surface, leading to small cracks that gradually propagate inward and outward. These cracks can eventually cause complete failure if not addressed. Another common issue arises from the surface layer. Under repeated loading, micro-cracks may form at a certain depth beneath the surface and then grow outward. Over time, this leads to the formation of pits or spalls, which significantly reduce the bearing’s performance and lifespan. Additionally, improper heat treatment processes—such as carburizing and quenching—can result in uneven hardness, internal stresses, or surface defects like oxidation or decarburization. These flaws make the bearing more susceptible to crack propagation and premature failure. Poor surface finish or contamination can also contribute to reduced durability. To improve the reliability of NSK bearings, it's crucial to ensure proper installation, regular maintenance, and the use of high-quality lubricants. Monitoring operating conditions, such as temperature and load, can help detect early signs of failure before they escalate. Implementing advanced inspection techniques, such as vibration analysis and oil sampling, can also aid in predicting potential issues. By addressing these factors, users can significantly enhance the lifespan and performance of NSK bearings, ensuring smooth and efficient operation in various industrial applications.
Related Bearing Knowledge: - Factors affecting oscillation in oscillating screen roller bearings - SKF bearing and its hole size measurement method - Precision instrument bearing layout and characteristics - Deep groove ball bearing design and application - Materials and functions of NSK bearings This article is linked to http:// Please reference China Bearing Network: http:// Previous: The Use of THK Guide Rails in Precision Instruments Next: The Cyclic Extension Method of Bearing Life

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