The vibration of NSK rolling bearings will produce noise and vibration, and the mechanism of their generation can be carried out from the following aspects**.
First of all, from the perspective of rolling elements, the rolling elements of NSK rolling bearings will have an interaction force with the inner and outer rings during movement, and this force will cause vibrations of the rolling elements. At the same time, the interaction force between the rolling elements and the cage also causes the cage to vibrate. These vibrations are transmitted to the rest of the machine through the housing, resulting in noise and vibration.
Secondly, from the perspective of the inner and outer rings, there may be certain errors in the processing process of the inner and outer rings of NSK rolling bearings, such as the roundness error of the inner and outer rings, the parallelism error of the inner and outer rings, etc. These errors cause the rolling elements to be subjected to uneven stresses during movement, which can cause vibrations of the rolling elements. In addition, factors such as the coefficient of thermal expansion of the inner and outer rings, the hardness of the material, etc., may also have an impact on the vibration of the bearing.
Thirdly, from the perspective of the cage, the cage of the NSK rolling bearing will be subjected to the force of the rolling elements during the movement, and this force will cause the vibration of the cage. At the same time, factors such as the material and structure of the cage may also have an impact on the vibration of the bearing.
Fourth, from a lubrication point of view, poor lubrication of NSK rolling bearings can also lead to vibration of the bearings. Poor lubrication can lead to increased friction between the rolling elements and the inner and outer rings, which can cause vibrations of the rolling elements. In addition, factors such as the viscosity and temperature of the lubricant may also have an impact on the vibration of the bearing.
In summary, the vibration generation mechanism of NSK rolling bearings involves many aspects, including rolling elements, inner and outer rings, cages and lubrication. In order to reduce the vibration and noise of bearings, it is necessary to start from many aspects, such as improving machining accuracy, optimizing structural design, and selecting appropriate lubricants.