The method of judging "Can the INA bearing be available"

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**How to Determine if an INA Bearing is Available or Not** Home > Bearing Knowledge > Discussion on the Method of "Can INA Bearings Be Available?" --- **How to Judge Whether an INA Bearing Is Available or Not** The ability to determine whether an INA bearing is still usable depends on several factors, including the condition of the bearing, its mechanical performance, the importance of the application, operating conditions, and the time until the next scheduled inspection. If any of the following issues are found, the bearing should be replaced immediately. --- ### 1. Unusual Noises: "Squeaking" or "Hissing" When a bearing produces a continuous "squeaking" sound during rotation, it may indicate insufficient lubrication. This noise can also be caused by irregular metal vibrations that are independent of speed. In such cases, the grease should be replenished. If the equipment has been stopped for too long, especially in cold weather, the bearing might produce a "sand-like" sound. This issue often becomes more noticeable with increased radial clearance and reduced grease penetration. To resolve this, adjust the bearing clearance and replace the grease with one that has higher penetration. --- ### 2. Periodic "Hoo" Sounds If the bearing emits a uniform periodic "hoo" sound along with a "rushing" noise, it could be due to scratches, grooves, or rust spots on the rolling elements or inner raceway. These sounds are proportional to the bearing's rotational speed. In such cases, the bearing should be replaced as it is likely damaged beyond repair. --- ### 3. "Clicking" or "Stuck" Sounds A "clicking" or "stuck" sound usually indicates that the cage is broken or the inner ring is damaged. If this occurs, the bearing should be stopped immediately to prevent further damage. --- ### 4. Irregular "Cracking" Sounds An uneven "cracking" sound may suggest that foreign particles such as iron filings or sand have entered the bearing. This can cause excessive wear and reduce the bearing’s lifespan. In this case, it is recommended to add more grease or change the lubricant to ensure proper protection. --- ### 5. Irregular "Shuffling" Sounds If the bearing produces an irregular "shuffling" sound, it may indicate that the inner ring is loosely fitted to the Shaft or the outer ring is not tightly seated in the housing. This can lead to misalignment and excessive vibration. It is important to check the contact between the bearing and the housing and make necessary adjustments promptly. --- ### When Should You Replace an INA Bearing? An INA bearing should be replaced if any of the following conditions exist: - Cracks or gaps in the inner or outer rings, rolling elements, or cage. - Significant damage or wear on the raceways, ribs, or rolling elements. - The cage is severely worn or the rivets are loose. - Rust or damage on the raceway surface or rolling elements. - Severe indentations or marks on the raceway or rolling elements. - Obvious creep on the inner or outer diameter surfaces. - Noticeable discoloration due to overheating. - Damage to seals or dust caps in sealed bearings. --- ### Final Thoughts Regular inspection and maintenance are essential to ensure the reliability and longevity of INA bearings. Always pay attention to unusual noises, vibrations, and visual signs of wear. If you are unsure about the condition of a bearing, it is better to replace it rather than risk equipment failure. --- **Related Bearing Knowledge:** - The Fundamentals of Industrial Bearings (Part 2) - Ways to Prevent TIMKEN Bearing Issues - How to Identify Genuine vs. Fake SKF Bearings (Part II) - Considerations for Using NTN Bearings --- *This article is provided by China Bearing Network. For more information, visit [http://www.chinabearing.net](http://www.chinabearing.net).* Previous: The Method of Determining Bearing Replacement Next: China's Rolling Mill Oil Film Bearing Technology (Part 3)

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