When cleaning quality 6900 Series Bearing, you need to pay attention to the following points:
1. Prepare tools: Cleaning quality 6900 Series Bearing requires tools such as persimmon water or cleaning solution, brushes, paper towels, and alcohol.
2. Remove the bearing: Remove the quality 6900 Series Bearing from the machine, use a bearing removal tool or gently use an eraser to scrape off the external dirt, and then gently rotate the bearing with your fingers to check whether the bearing has abnormal noise or resistance.

3. Clean the bearing: Soak the quality 6900 Series Bearing in the cleaning solution, gently brush the surface of the inner and outer rings of the bearing with a brush, and be careful not to scratch the surface of the bearing. Then take the bearing out and wipe the surface dry on a paper towel.
4. Lubrication: Drop an appropriate amount of lubricating oil or grease on the inner ring, outer ring, and ball of the quality 6900 Series Bearing, and gently rotate the bearing with your fingers to spread the lubricating oil or grease evenly on the bearing surface.
5. Assembly: Put the quality 6900 Series Bearing back into the machine and assemble it as required.
It should be noted that when cleaning the bearings, handle them with care and do not hit them hard to avoid damage to the bearings. In addition, the frequency of cleaning the quality 6900 Series Bearing should be determined according to the usage of the bearing.