The noise of bearings not only affects the quality of use, but also brings a lot of trouble to mechanical equipment. In general, bearings will produce some noise during use, and the invasion of foreign substances can directly cause the bearing to produce certain noise during operation, or improper lubrication, improper installation, etc. can cause the bearing to emit various noises. Which bearings have lower noise levels during use?
Compared to the use of bearings, the following analysis of bearing noise is conducted:

1. The noise of ball bearings is lower than that of roller bearings, and the (friction) noise of bearings with less relative sliding is lower than that of bearings with more relative sliding; Those with more balls, thicker outer rings, and less noise;
2. The noise generated by using solid cage bearings is relatively lower than that of bearings using stamped cages;
3. The noise generated by using plastic cage bearings is lower than that of bearings using both types of cages mentioned above;
4. High precision bearings, especially those with higher precision rolling elements, have relatively lower noise levels compared to low precision bearings;
5. The noise of small bearings is relatively smaller than that of large bearings.
   Kind reminder: The damage of vibration bearings can be said to be quite sensitive, such as peeling, indentation, rust, cracks, wear, etc., which will be reflected in bearing vibration measurement. So, by using a special bearing vibration measuring device (such as a frequency analyzer), the magnitude of the vibration can be measured, and the specific situation of the abnormality cannot be inferred through frequency differentiation. The measured values may vary depending on the usage conditions of the bearings or the installation position of the sensors, so it is necessary to analyze and compare the measured values of each machine in advance to determine the judgment criteria.