What is the main cause of noise in bearings?

      Bearing noise: The new bearing has a slight running sound when it is running. This sound is expressed in decibels. The causes of rolling bearing noise are more complicated.
      The main reasons are:
        (1) The surface of the inner and outer rings of the bearing is uneven. Produces bearing noise.
(2) Bearing noise is generated due to improper installation and uneven force.
(3) Bearing noise is generated due to uneven ball diameter and friction with the inner and outer rings.

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Imported bearing running track method

When the inlet bearing rotates, the raceway surface of the inner ring and the outer ring of the imported bearing is in rolling contact with the rolling element, so the running track is a dark surface, and the running track attached to the raceway surface is not an abnormality, and thus can be changed. Know the load conditions, so when disassembling the imported bearings, please pay close attention to and observe the running track of the raceway surface.

If you carefully observe the trajectory, you will know that you only bear radial loads, withstand large axial loads, withstand moment loads, or have extreme rigidity in the bearing housing. It is possible to check whether the bearing has an unexpected load and the installation error is a national or not, and it is a clue to investigate the bearing damage.

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