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Vibration and noise is playing more and more important role of dynamic performance of rolling bearing. To avoid the bearings failed in the early stage, as well as to waste the more energy consumption, the vibration and noise measurement is the essential process to control the good operation bearings.

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There are many factors causing the vibration and noise abnormally. 

> Noise testing

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The noise of bearings by dB is classified as Z1, Z2, Z3 and Z4. It is measured by the instrument of S0910-1.

tolerance in dB

vibration acceleration of single bearing

> Vibration testing

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The vibration and noise of bearings are measured by BVT-1 and classified as V1, V2 ,V3 and V4.

tolerance in μm/s

vibration of single ball bearing

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