The sound of the rolling track of a bearing and the way it is operated. The sound of rolling track is caused by the flipping body of the bearing flipping on the rolling track bearing during operation, characterized by continuous sliding. This type of sound is the basic sound that all flipping bearings will cause. The common bearing noise is a mixture of raceway bearing noise and other noises. The rolling track sound can also vary. For example, the rolling track bearing sound of a ball bearing is an irregular rolling track bearing sound, with a frequency above 1000Hz. The difference between its main frequency and other bearings depends on the fact that it does not change with the speed ratio, but its total noise coefficient does increase with the acceleration of the speed ratio.

Some bearings with particularly loud raceway noise have a noise coefficient that is inversely proportional to the viscosity range, meaning that the higher the viscosity, the lower the raceway noise; And for some bearings with low raceway noise, their raceway bearing noise coefficient is directly proportional to viscosity, that is, the higher the viscosity, the greater the noise coefficient.

The variation law of rolling sound is related to the stiffness of the bearing seat. The stiffness of the bearing seat is inversely proportional to the rolling sound noise coefficient, that is, the higher the stiffness of the bearing seat, the lower the total noise coefficient of the rolling sound. Similarly, there is also axial clearance, which is inversely proportional to the noise coefficient and main frequency of the raceway sound. The smaller the axial clearance, the higher the noise coefficient and main frequency. After reading the above, the control measures for raceway noise are actually a bit vague. We can use bearings with low waviness, which will reduce the noise reasonably. We must be cautious when applying standards.

The generation of track noise poses a significant threat to the overall noise of mechanical equipment, and reducing track noise can effectively lower the overall noise of all mechanical equipment.