Bearing vibration on the damage is very sensitive bearing FAG, such as peel, indentation, rust, crack, wear, etc, will bearing vibration measurement in FAG reflected through the use of special, so, of bearing vibration measurement device FAG (frequency analyzer, etc) can be measured by the size of the vibration frequency points, not that of the specific conditions of the abnormal. The measurement of numerical because the use of bearing FAG conditions or sensor installation position and different, so need to every machine in advance of the measured value analysis is made after the judgment standard.
Generally speaking, the rolling bearing bearing FAG itself does not produce noise. Usually feel "FAG bearing noise" in fact is FAG bearing directly or indirectly with the surrounding structure vibration voice effect.
This is why many problems when noise can be seen as a whole FAG involves the vibration of the bearing applications. For loading rolling body quantity change and produce vibration when a radial load load on a FAG, the load bearing load of roller in operation of the number may vary slightly, namely: the 2-3-2-3... This caused the load of the direction offset. The resulting vibration is inevitable, but through the axial preload to alleviate, loading in all rolling elements (does not apply to FAG bearing of cylindrical roller bearing).
Parts of the wave degrees in FAG circle and the bearing shaft bearings or between the secret with, FAG bearing circle may with adjacent components combined the shape of the deformation. If appear in operation of deformation, may produce vibration. Therefore, the bearing and the shaft to the FAG machined to the required tolerance is very important.
Local damage due to operation or installation errors, small part FAG rolling bearings rolling body may word and damaged. In operation, the damaged FAG rolling bearings components will be produced a particular vibration frequency. Vibration frequency analysis can identify the damaged FAG bearing parts. Applications of vibration behavior in many applications, FAG bearing the stiffness of the surrounding structures and the stiffness of the same. Because of the characteristic, as long as the correct choice of the FAG bearing (including the load and clearance) and its application in the configuration, it is possible to reduce the vibration of the application.
There are three methods can reduce the vibration of the bearing FAG:
1. Remove from the application of critical incentive vibration.
2. Or stimulate parts and resonance components resistance between critical incentive vibration.
3. Change the structure stiffness and change critical frequency.