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FAG bearing objects mechanical vibration energy of formation elastic wave propagation through media such as air, was felt by the human auditory system, known as the voice. On the frequency and acoustic intensity of human hearing, adverse psychological or physiological effect that part of the sound, commonly referred to as noise. Operation of rolling bearing noise is a comprehensive quality parameters, is under conditions of functioning of the bearing inner ring, still on the outer surface of the outer ring, in accordance with the relevant technical requirements, measured by a certain orientation of FAG bearings directly out of the microphone incident acoustic sound pressure level.
FAG bearings axial load from the same circle of three equal distribution of flexible added to FAG who owes nothing pads evenly on the bearing outer ring, load to line with the axis of spindle concentricity and perpendicularity should not exceed 0.20 mm and 0.05 mm, respectively. Flexible load cushion stiffness in addition to transfer of axial load and restrictions tested outside the bearing outer ring rotation, should not impede the vibration of FAG bearings, loading device consisting of the resonant frequency of the system and it should be in addition to the vibration frequency of bearing.
FAG bearing vibration and noise are closely related and differentiated. User requirements often vary based on the vibration and noise of objects vary, used for cars, aircraft and motor bearings, often require low noise, and FAG bearings for precision machine tools, such as the, requiring little vibration. In most cases more important measurement of noise, easily measured due to vibration than noise, noise measurement equipment or environmental noise is absent under intensive conditions, a common method of measuring vibration instead of measuring noise, confirmed in the medium frequency range there is a fairly good correspondence between such alternatives is accurate enough on the practical.
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