The use of sounder on the operation of the rolling bearing sound size and sound quality to check, even if the bearing has a slight stripping damage, but also issued an abnormal sound and irregular sound, with the sounder to distinguish. It is a very common way to use auditory to identify irregularities. For example: With the electronic stethoscope to detect a part of the normal noise is experienced operators to use the method. If the bearing in a good state of rotation will be issued a low whining sound. If you issue sharp hissing, squeak and other irregular sounds, often that the bearing in a bad condition. Sharp creak noise may be caused by improper lubrication. Inappropriate bearing clearance can also cause metal sound. The dents of the concave track on the bearing outer ring track can cause vibration and cause smooth and crisp sound. If due to the installation caused by percussion scars will produce noise, this noise will be as high and low bearing speed varies. If there is intermittent noise, it means that the rolling parts may be damaged. This sound is caused when the damaged surface is rolled over, the bearing if the pollutants often cause hissing sound. Serious bearing damage can produce irregular and great noise.
Bearing damage can be detected by hearing, but usually the bearings must be replaced at this time. Therefore, a preferred method is, for example, an electronic condition monitoring such as a skf electronic condition monitoring apparatus. Compared to the old method using a stick or screwdriver arrived in the bearing box, the other end of the ear, the new invention to ensure a more secure, more accurate estimate of bearing conditions.http://www.bhsbearings.com/