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Analysis: maintenance skills of imported bearings

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1. The removal of imported bearings is carried out under the inspection of the imported bearings; the first is to record the appearance of the bearing; to recognize the residual amount of lubricant; after sampling and viewing the lubricant; to wash the bearing. As a scavenger; generally use gasoline, fire oil. The removal of the bearing; the coarse removal and the fine fine washing; do not leave in the container; first put the metal mesh bottom; so that the bearing does not directly touch the dirt of the container. When the fine is removed; if the bearing is rotated with dirt; it will be damaged Bearing rolling surface; should pay attention to. In the rough removal of oil; use brush to remove grease, adhesive; after cleaning; turn into fine washing.
Fine washing; the bearing is rotated while removing the oil; while carefully cleaning. Others; cleaning oil should also be kept clean.
2. Inspection and discrimination of imported bearings In order to judge whether the undetached bearings can be reused, it should be viewed after the bearings are cleaned. Carefully check the raceway surface, the rolling surface, the condition of the cooperation surface, the wear condition of the cage, and the bearing. The addition of clearance and the damage related to the reduction of scale accuracy; abnormal. Non-detached small ball bearings; the inner ring is supported horizontally with one hand; the outer ring of rotation acknowledges the circulation.
Tapered roller bearings and other separate bearings; can be viewed on the rolling surface of the roll and outer ring.
Large bearings can not be rotated by hand; pay attention to the appearance of the rolling body, raceway surface, cage, rib surface, etc.; the higher the importance of the bearing, the more stable it is necessary to view.
Whether it can be re-used; it is to consider the degree of bearing damage, mechanical properties, importance, working conditions, and the time until the next inspection. However, if there are the following shortcomings, it can no longer be used. It is necessary to replace the new bearing. .
Crack on any of the inner ring, outer ring, roll body, cage; or notch.
There is crack on any one of the ferrule and the rolling body.
There is significant slack in the raceway, ribs and roll.
There is rust on the raceway surface and the rolling body; there is injury.
There are severe indentations and marks on the raceway surface and the rolling body.
The inner diameter of the inner ring or the outer diameter of the outer ring has significant creep.
The color change due to heat is significant.
Bearings sealed with grease; damage to the seal or dust cover is significant.

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