How to install and adjust low noise bearings:
1. The installation and adjustment of the low-noise bearing can also imitate the grouping method of the long-life bearing, so that the matching interference is relatively uniform, the bearing clearance is also consistent, and it is hoped that the interference can take a smaller value within the possible range. In order to ensure that the deformation of the bearing race is small, the noise caused by the passage of the rolling elements becomes small.
2. The clearance has a great relationship with noise. The ideal state is that when the bearing is in the highest temperature state of operation, the clearance value is just zero. The method for judging the excessive clearance is that the static state causes the shaft to be axially displaced, and the reciprocating amplitude thereof is large, and large and heavy turbid noise is emitted during operation.
3. If annoying and screaming sounds are issued during operation, the pre-tightening of the bearing is too large, and the bearing has a large pre-interference, and the pre-tightening degree should be slightly relaxed. If the clearance is too large, the two bearing rings can be slightly offset in the axial direction: the clearance is reduced, the axial rigidity is increased, and the bearing noise can be reduced.
4. When the rolling element enters the no-load area, it will slip or make left and right sway, which will increase the noise and cause wear, while the small clearance and large axial stiffness can eliminate this phenomenon. However, the play should not be too small to avoid excessive temperature and shortened life.
5, sometimes due to the large operating temperature range of the mainframe, or the size of the shaft and the seat hole is very discrete, can not be adjusted to obtain a more appropriate clearance, in this case, the outer ring of the bearing can be elastic Pressure preloading method.