How to solve the electric erosion of TIMKEN bearings

The so-called electric erosion refers to the fact that the current retracts the spark through a thin smooth oil film when the contact portion of the bearing roller and the rolling element are moved, and the ground melting and unevenness of the appearance portion.

The ground potential difference between the outer ring and the inner ring. When setting the circuit, the current does not flow through the bearing portion. Insulate the bearing.

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Factors affecting the vibration of NSK bearings

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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