Bearing Crack Disposal Methods
Source: China Bearing Network | Date: May 21, 2013
During the grinding process, the surface of a bearing component is subjected to various mechanical and thermal effects. These include cutting forces, compressive forces, and friction from the grinding wheel. Among these, the compressive force and friction have the most significant impact on the surface layer. This leads to the formation of a plastic deformation layer and a work-hardened layer on the outer surface of the bearing. These layers can alter the residual stress distribution in the material, which may result in micro-cracks or even larger fractures over time. Another critical factor is secondary quenching burn, which occurs when the surface of the bearing is exposed to high temperatures during the grinding process. The secondary quenching zone experiences compressive stress, while the high-temperature tempering zone beneath it develops maximum tensile stress. This area is particularly vulnerable to crack initiation. Cracks tend to propagate along the original austenite grain boundaries. In severe cases, this can lead to widespread cracking across the entire grinding surface, significantly reducing the structural integrity of the bearing. To prevent such issues, proper control of grinding parameters—such as speed, pressure, and cooling—is essential. Additionally, using high-quality grinding wheels and ensuring adequate lubrication can help reduce heat generation and minimize the risk of surface damage. In addition to these technical considerations, regular inspection and maintenance of bearings are crucial for identifying early signs of wear or cracking. Proper handling and storage of bearings also play an important role in preserving their performance and longevity. For more information on bearing maintenance and failure analysis, visit our website or contact us directly.
Related Bearing Knowledge - Primary damage to rolling bearings and how to extend their service life - Understanding NSK bearing noise patterns and their implications - Tips for maintaining motor bearings against corrosion - Details on high-speed bearing systems and clearance specifications This article was originally published on China Bearing Network. Please reference the source if you share this content. Previous: Methods to Prevent Rusting of Motor Bearings Next: High-Speed Operation of Imported Bearing Devices and Clearance Details
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