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1. Cleaning of imported bearings
When disassembling the imported bearing for inspection, first record the appearance of the bearing, confirm the residual amount of lubricant, and after sampling the lubricant for inspection, wash the bearing. As a cleaning agent, gasoline and kerosene are commonly used. The cleaning of the removed bearings is divided into coarse cleaning and fine fine washing. In the container, the metal mesh bottom is placed first, so that the bearing does not directly contact the container.
Fine washing is to carefully clean the bearing while rotating it in the cleaning oil. In addition, the cleaning oil should always be kept clean.
2. Inspection and judgment of imported bearings In order to judge whether the removed bearings can be reused, it is necessary to check after the bearings are cleaned. Carefully check the raceway surface, the rolling surface, the state of the mating surface, the wear of the cage, the increase in bearing clearance, and the presence or absence of damage to the dimensional accuracy.
Separate bearings such as tapered roller bearings can be inspected separately for the rolling surfaces of the rolling elements and the outer ring.
Large bearings cannot be rotated by hand. Pay attention to the appearance of rolling elements, raceways, cages, ribs, etc. The higher the importance of bearings, the more careful inspection is required.
The judgment of whether or not to reuse is determined in consideration of the degree of bearing damage, mechanical properties, importance, operating conditions, and the period until the next inspection. In the case of fine cleaning, if the bearing is rotated with dirt, it will damage the rolling surface of the bearing and should be taken care of. In the rough cleaning oil, use a brush to remove the grease and the adhesive. After it is almost clean, it is transferred to the fine wash. For non-separable miniature ball bearings, use one hand to support the inner ring and horizontally rotate the outer ring to check if it is smooth.
When disassembling the imported bearing for inspection, first record the appearance of the bearing, confirm the residual amount of lubricant, and after sampling the lubricant for inspection, wash the bearing. As a cleaning agent, gasoline and kerosene are commonly used. The cleaning of the removed bearings is divided into coarse cleaning and fine fine washing. In the container, the metal mesh bottom is placed first, so that the bearing does not directly contact the container.
Fine washing is to carefully clean the bearing while rotating it in the cleaning oil. In addition, the cleaning oil should always be kept clean.
2. Inspection and judgment of imported bearings In order to judge whether the removed bearings can be reused, it is necessary to check after the bearings are cleaned. Carefully check the raceway surface, the rolling surface, the state of the mating surface, the wear of the cage, the increase in bearing clearance, and the presence or absence of damage to the dimensional accuracy.
Separate bearings such as tapered roller bearings can be inspected separately for the rolling surfaces of the rolling elements and the outer ring.
Large bearings cannot be rotated by hand. Pay attention to the appearance of rolling elements, raceways, cages, ribs, etc. The higher the importance of bearings, the more careful inspection is required.
The judgment of whether or not to reuse is determined in consideration of the degree of bearing damage, mechanical properties, importance, operating conditions, and the period until the next inspection. In the case of fine cleaning, if the bearing is rotated with dirt, it will damage the rolling surface of the bearing and should be taken care of. In the rough cleaning oil, use a brush to remove the grease and the adhesive. After it is almost clean, it is transferred to the fine wash. For non-separable miniature ball bearings, use one hand to support the inner ring and horizontally rotate the outer ring to check if it is smooth.
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