How is the bearing vibration? - bearing knowledge

In general, does not produce noise of rolling bearings SKF bearing itself. Often feel 'bearing noise' is in fact the SKF bearing, directly or indirectly, with the surrounding structure vibration sound effects. This is why many times the noise can be seen as involving the whole bearing vibration problem of application. Due to loading quantity change of vibration roller when a load on a bearing radial load, the number of rolling element bearing load will be a slight change in the operation, i. e. , 2 - 3 - 2 - 3. 。 。 。 This caused the load in the direction of migration. The resulting vibration is inevitable, but can be by axial preload to ease, loading in all rolling body ( Does not apply to SKF bearing of cylindrical roller bearing) 。 The waviness on bearing ring of the self-contained parts or close coordination between the shaft and bearing ring with adjacent components are likely to match the shape and deformation. If there is a deformation, can produce vibration in the operation. Therefore, the bearing and the shaft are machined to the required tolerance is very important. Local damage due to the operation or installation errors, a small number of bearing raceway and rolling element may be damaged. In the running, rolled the damaged bearing parts will produce a certain vibration frequency. Vibration frequency analysis can identify the damaged bearing parts. The vibration behavior of applications in many applications, the bearing stiffness with the surrounding the stiffness of the same structure. Due to this feature, as long as the correct choice bearing ( Including the preload and clearance) And its application in the configuration, it is possible to reduce the application of vibration. There are three methods can reduce the SKF bearing vibration: 1. Get rid of critical excitation vibration from the application. 2. Antimicrobial resistance stimulate critical excitation vibration between components and the resonance components. 3. Change the stiffness of structure, so as to change the critical frequency.