How to install and adjust low noise bearings

2022-09-21
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How to install and adjust low noise bearings

installation and adjustment methods of low-noise bearings:

1. The installation and adjustment of low-noise bearings can also follow the grouping method of long-life bearings, so that the matching interference size is relatively consistent, and the bearing clearance is also relatively consistent. It is hoped that the matching interference will take a smaller value within the possible range, so as to ensure that the deformation of the bearing raceway is small, so that the noise caused by the passage of the rolling element will be reduced

2. The clearance has a great relationship with the noise. The adjustment of the ideal impact magnitude G is mainly to adjust the lifting angle of the pendulum. When the bearing is in the highest temperature state of operation, the clearance value is just zero. Another way to judge whether the clearance is too large is to make the shaft move axially in a static state, with a large reciprocating amplitude and a large and turbid noise during operation

3. If there is an annoying scream during operation, it indicates that the preload of the bearing is too large, and the bearing has too large pre interference, so the preload should be slightly relaxed. If the clearance is too large, the two bearing rings can be slightly offset along the axial direction: it not only reduces the clearance, but also increases. 2. The use of the pressure shear experimental machine increases the axial rigidity, which can reduce the bearing noise

4. When entering the no-load area, the rolling element will slip or move left and right, which will not only increase the noise, but also cause wear, and small clearance and large axial stiffness can eliminate this phenomenon. However, the clearance should not be too small, so as not to cause excessive temperature and shorten service life

5. Sometimes, due to the large working temperature range of the host, or the discrete size of the shaft and seat hole, ⑦ the use of comprehensive technology is large, and it is impossible to obtain a more appropriate clearance at one time. In this case, the elastic constant pressure preloading method can be used for the outer ring of the bearing

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