1) NSK bearing design parameters: including the number of NSK bearing rolling elements, ferrule wall thickness and clearance.
2) Manufacturing error of NSK bearing parts: including NSK bearing raceway and rolling element surface roughness, ridge degree and roundness difference. A large number of experimental studies have shown that the influence of waviness on bearing vibration is dominant, while the influence of surface roughness and roundness is relatively small.
3) NSK bearing working conditions: NSK bearing has the greatest influence on bearing vibration during the operation, load, speed and lubrication conditions.
4) NSK bearing installation parameters: NSK bearing and shaft and bearing housing coordination, installation bias and other factors also affect the bearing vibration.
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