Types of Noise related Irregularities, Possible Causes & Measures

1.    Loud Metallic sound

Possible Cause :

  • Abnormal load
  • Incorrect mounting
  • Insufficient or improper lubricant
  • Contact of rotating parts

Measures :

  • Improve the fit, internal clearances, preload, position of housing shoulder etc.
  • Improve the machining accuracy and alignment of shaft and housing accuracy of mounting method
  • Replenish the lubricant or select another lubricant
  • Modify the seal etc.

2.    Louder Regular Sound  

Possible Cause :

  • Flaws, corrosions, or scratches on raceways
  • Brinelling
  • Flaking on raceway

Measures :

  • Replace or clean the bearing, improve seals and use clean lubricant
  • Replace the bearing and use care handling bearings
  • Replace the bearing

3.    Irregular sound

Possible Cause :

  • Excessive clearances
  • Penetration of foreign particles
  • Flaws or flaking on balls
  • Improve the fit, clearance and preload

Measures :

  • Replace or clean the bearing, improve the seal and use clean lubricant
  • Replace bearing

 
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White Paper – Types of Noise related Irregularities, Possible Causes & Measures

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