NTN thin wall bearing vibration on the service life of impact analysis

In general, NTN bearing of rolling bearing itself does not produce noise. Often feel 'thin wall bearing noise' is actually a 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 roller vibration when a load on a thin wall bearing radial load, the number of rolling element bearing load will be a slight change in the running, the resulting vibration is inevitable, but can be by axial preload to ease, loading in all rolling body. Parts of the wave degrees between the bearing ring and bearing or the shaft under the condition of reamer, NTN 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 thin wall bearing raceway and rolling element may be damaged. In the running, rolled NTN bearing damaged 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. NTN bearing is whether can can be judged according to various needs to consider the extent of the damage, and in this respect main consideration is the effect of damage, the mechanical performance, with the importance of the conditions of the installation is need to consider, to the next overhaul period and the effect of the decision, but in the case of defects is not in use, must be replaced new thin wall bearing, for the inner ring and outer ring, rolling element and cage has a crack on any gap is to note that this is keep a effect in this respect. So sense is skilled, the following is from 8 to introduce rules. NTN bearing load, in the rolling element and raceway contact produce plastic deformation. When the load is overweight, can in the pits of raceway surface plastic deformation, and make the bearing summer fierce vibration and noise in operation. Due to the relative motion of the rolling element and raceway and the invasion of the dirt, dust, the rolling element and raceway surface wear. Wear is larger, the shaft NTN bearing clearance increases, noise, vibration, reduce the operating precision of the thin wall bearing, thus directly affects the accuracy of some hosts. So for some precision machinery bearings, wear is available to define the service life of bearing.