Sound measuring device to check the size of the operation of the bearing rolling sound and sound quality, bearing even if there is a slight peeling damage, will issue abnormal tone and irregular sound, sound measuring device able to distinguish. The use of hearing to recognize irregular operation is a very common method. For example: With electronic stethoscope to a perceptible parts abnormal noise is often experienced operatives.
1, bearing in good state even turn will issue a low whining sound. If issued sharp hissing sound, creak sound and other irregular sounds, often bearing in a bad situation even turn. Sharp creak noise may be caused due to inadequate lubrication. File bearing clearance will cause a metallic sound.
2, the recess on the bearing outer track rail dent caused by vibration, and resulting in a smooth and crisp sound.
3, if the percussion scars caused because the installation will generate noise, this noise with the level of the speed of the bearing type.
4, if there is intermittent noise, rolling elements may be damaged. This sound occurs when the damaged surface is rolling out of date, if the bearing pollutants often cause a hissing sound. Serious with the Order of the damage will produce irregular and loud noise.
5, the bearing damage can certainly by hearing perceptible, but usually has to bearings must be replaced immediately is not available. Therefore, a better approach such as the use of instruments such as SKF electronic condition monitoring. Compared to the old method of using a stick or screw than the child against the bearing housing, the other end of the stick to the ear, new inventions to ensure safer and more precise estimates of the bearing condition.
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