The size and sound quality of the measured sound operation of the bearing rolling sound check, bearing slight peeling damage, and will send out abnormal tone and irregular sound, able to distinguish between measured sound device.
Listen
Hearing to identify irregular operation is a very common method. For example: With the electronic stethoscope to check the feel of certain parts is not normal noise is often the method used by the experienced operator.
Bearing in a good state even turn will issue a muffled hum sound. If issued a sharp hissing sound, squeaky sound, and other irregular sounds, often said that bearing in bad situation even turn.
Sharp squeaking noise may be caused due to improper lubrication. Improper bearing clearance can also cause a metallic sound. Dent of the concave bearing outer track track may cause vibration, resulting in a smooth and crisp sound. As the installation percussion scars will produce noise, this noise will vary with the level of bearing speed.
If intermittent noise, said rolling elements may be damaged. This sound occurs when damage to the surface is rolling out of date, and bearing if pollutants are often caused by a hissing sound. Serious with the Order of damage to the irregular and huge noise.
Bearing damage of course, by listening to perceptible, but generally to the bearings must be replaced immediately to non-Therefore, a better way such as the use of condition monitoring, such as electronic instruments. More accurate estimate than the old method using a stick bearing status.
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