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Protection Makes the Bearing "Bright"

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Proper protection and maintenance are essential to ensure that bearings perform efficiently and last longer. Here are some effective methods to maintain and inspect bearings properly. After disassembling the bearing, it's important to conduct a timely review to detect any potential issues early on, preventing unexpected failures and improving productivity and cost efficiency. 1. **Removal and Cleaning of Bearings**: When removing the bearing, first take a photo to document its appearance. Check the remaining lubricant and collect a sample for analysis before removal. - The cleaning process includes rough washing and fine washing. A metal mesh frame can be placed at the bottom of the container to prevent damage. - During rough washing, remove grease or adhesive using a brush. If the bearing is immersed in oil, be careful not to damage the rolling surface due to foreign particles. - For fine washing, gradually immerse the bearing in oil and perform the task carefully. Common cleaning agents include neutral non-aqueous diesel or kerosene. In some cases, warm lye may also be used. Regardless of the solvent, it should be filtered and kept clean. After cleaning, apply anti-rust oil or grease immediately. 2. **Inspection and Evaluation**: To determine if the removed bearing is still usable, check its dimensional accuracy, rotational precision, internal clearance, mating surfaces, raceway, cage, and seal ring. Based on the inspection results, decide whether the bearing can be reused or needs replacement. The criteria for judgment vary depending on the mechanical function, importance, and inspection frequency. If any of the following damages are found, the bearing must not be used again and should be replaced immediately: - Cracks or missing parts in bearing components. - Flaking on the raceway’s rolling surface. Identifying bearing faults without disassembly is crucial for maintaining productivity and cost efficiency. Some common identification methods include: - **Sound Analysis**: Recognizing unusual sounds through practice. Use a stethoscope or sound bar to clearly hear the bearing's operation. - **Temperature Monitoring**: Comparing operational temperatures. Record temperature changes continuously; abnormal increases or irregular patterns may indicate problems. - **Lubricant Inspection**: Analyzing the condition of the lubricant to check for contamination, such as dirt or metal particles. This method is especially useful for large or hard-to-reach bearings.

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