Introduction to proper installation and adjustment of low noise deep groove ball bearing

Bearing due to the design, manufacturing, management and other reasons, will inevitably produce vibration and sound when the bearing is working. Bearing noise will not only affect the quality of use, but also bring a lot of trouble to mechanical equipment. Bearing noise is inevitable, so many people choose the use of low noise deep groove ball bearings when checking bearings. Is the installation and adjustment of low noise deep groove ball bearings the same as that of bearings?
1. The installation and adjustment of low noise deep groove ball bearings can also imitate the grouping method of long life deep groove ball bearings, so that the fit interference size is consistent and the clearance of deep groove ball bearings is also consistent. It is hoped that the fit interference value is taken within the possible range to ensure that the raceway deformation of deep groove ball bearings is small, so as to reduce the noise caused by rolling body passing through.
2. Clearance has a great relationship with noise. The ideal state is that when the deep groove ball inlet bearing is in the operating temperature state, the clearance value is just zero. The method to judge the clearance is too large: the static state makes the axial displacement, the reciprocating amplitude is larger, and the noise is large and heavy when running.
3, if the operation of a nasty squeal, it indicates that the deep groove ball bearing preload is too large, deep groove ball bearing has a large preinterference, should slightly relax the degree of preload. If the clearance is too large, the two deep groove ball bearing rings can be slightly offset along the axial direction: it not only reduces the clearance, but also increases the axial rigidity, which can reduce the noise of deep groove ball bearing.
4. When the rolling body enters the no-load zone, it will slip or move from side to side, which will increase noise and cause wear, and small clearance and large axial stiffness can eliminate this phenomenon. But the clearance should not be too small, so as not to cause high temperature and shorten the service life.
5. Sometimes, because the working temperature range of the host is large, or the size dispersion of the shaft and seat hole is very large, the more appropriate clearance can not be obtained at one setting. In this case, the elastic constant pressure preloading method can be used for the outer ring of the deep groove ball bearing.
The application of low noise deep groove ball bearing is more and more extensive, and the requirements for it are also more and more harsh. Domestically, the emphasis used to be mainly on vibration levels, with the addition of peak control. For bearings with low noise requirements, the internal structure design of bearings should be improved appropriately. But no matter what kind of structure is chosen, the vibration and sound caused by the rotation of the bearing itself is unavoidable. A reasonable structure can only reduce the vibration and sound caused by the inherent frequency of the thin-wall bearing to a certain extent.