First, scar sound and its control method
Rolling bearings of rolling surface, indentation, or if there is a crack corrosion, will appear like rivet rivet regularity of vibration and noise, the cycle time may be fixed but most, the corresponding relationship between rotating speed into the corresponding scars on the channel will continue to appear, scars on the ball, and the noise with the installation and lubrication standard and have corresponding changes. The control measures of this kind of noise are: the installation can not knock the bearing, the bearing and the shaft are installed and then installed into the bearing seat to avoid the bearing loaded oblique; Inventory to avoid bearing corrosion and transportation to avoid impact vibration; Use grease with high viscosity.
2. Dust sound and its control methods
The rolling surface
Rolling bearings have dust and other impurities, there will be non-periodic vibration and the so-called dust sound, the size of the vibration and noise is uncertain, and there is or is not.
Dust sound control measures are: improve the cleaning method of bearings, bearings, shafts, seat holes and their matching parts are strictly clean before installation; Clear the impurities in lubricants, improve the sealing of bearings, and prevent the application of plastic cages with impure materials or embedded impurities.
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