fag bearing, the vibration of the general, the rolling bearing itself does not produce noise. Usually feel "bearing noise" is in fact bearing directly or indirectly with the surrounding structures to produce the vibration of sound effects. This is why many times the noise problem can be regarded as related to the vibration of the bearing application.
(1) the number of load rolling element changes excitation: When a radial load to load when a fag bearing, load bearing rolling element number in the operation of a slight change, which caused the load direction of the partial shift. The resulting vibration is inevitable, and mitigation, but can be pre-loaded by axial load for cylindrical roller bearings in all the rolling element (not applicable).
(2) local damage: Due to the operation or installation errors, the small part of the fag bearing raceways and rolling elements may be damaged. Running, rolling across the damaged bearing components will have the specific vibration frequency. Frequency analysis to identify the damaged bearing components. This principle has been applied in the condition monitoring equipment used to detect bearing damage situation. To calculate the bearing frequency, see the calculation procedures of the bearing frequency.
(3) the accuracy of the relevant parts: In the case of secret cooperation between the fag bearing ring and the bearing or drive shaft, the bearing ring may be compatible with the adjacent parts of the shape and deformation. If the deformation, in operation it may lead to vibration.
(4) pollutants: If you run in a polluted environment, impurities may enter the bearing and rolling element rolling. Generated vibration depends on the number, size and composition of the laminated impurity particles will not produce the typical form of frequency, but you can hear a disturbing noise.
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