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The rolling sound of the bearing can determine the fault

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.

1, if the bearing is in a good state of continuous rotation, it will emit a low and low purr 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.

2, the concave track of the bearing outer ring track will cause vibration, and create smooth and crisp sound.

3, if the impact wound caused by the installation will also produce noise, this noise will vary with the speed of the bearing.

If there is intermittent noise, 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 congeners can produce irregular and huge noise.

Although the damage of the bearing can be detected by hearing, it is usually at this time that the bearing must be replaced immediately. Therefore, a better method is to use an electronic condition monitoring instrument such as SKF. Compared to the old method of using a stick or screw against a child on the bearing box and the ear on the other end, the new invention ensures a safer and more accurate estimation of the bearing condition.