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Method of Inspection and Maintenance of Rolling Sound of Bearing

The microphone is used to check the size and sound quality of the rolling sound of the running bearing. Even if the bearing has minor damage such as stripping, it will emit abnormal sounds and irregular sounds, which can be distinguished by the microphone.

The use of hearing to identify irregular movements is a very common method. For example, using an electronic stethoscope to detect abnormal noise in a part is often a method used by experienced operators. If the bearing is in a good continuous state, it will make a low whine sound. If it emits sharp hisses, squeaks, and other irregular sounds, it often indicates that the bearing is in a bad continuous state.

Sharp squeaky noise may be caused by improper lubrication. Improper bearing gaps can also cause metallic sound. The indentation of the concave track on the outer ring track of the bearing causes vibration and creates a smooth, crisp sound. If the knock wound caused by the installation also produces noise, this noise will vary with the speed of the bearing.

If there is intermittent noise, it means that the roller may be damaged. This sound occurs when the damaged surface is pressed out, and if there is a contaminant in the bearing, it often causes a hissing sound. Severe damage to the congener will produce irregular and huge noise

A) The cleaning of the bearings is done in coarse and fine washing, and the bearings can be placed on the bottom of the container for use.

When washing rough, remove grease or adhesives in oil with brushes, etc.. If you rotate the bearing in the oil at this time, pay attention to the rolling surface due to foreign matter and other damage

C, fine wash, in the oil slowly rotating bearings, must be carried out carefully.

The cleaning agent commonly used is neutral water-free diesel or kerosene, and sometimes warm lye is used as needed. Whatever cleaning agent you use, always filter to keep it clean.

Immediately after cleaning, apply anti-rust oil or anti-rust grease on the bearing.

2, inspection and judgment:

In order to determine whether the removed bearings can be reused, the bearings should focus on checking their size accuracy, rotation accuracy, internal clearance, as well as the match surface, the Raceway surface, the holder and the sealing ring.

The test results can be judged by the usual bearings or those who are proficient in the bearings.

The standard of bearing judgment varies according to mechanical properties and importance, as well as inspection period. If the following damage, the bearing must not be reused, must be replaced.

Fracture and defect of a bearing component.

The stripping of the rolling surface of the B Raceway surface