Reliability Tip: OTR Inspections- Gear Coupling

Subjective OTR inspections on gear couplings should include Noise, Visual, Temperature, grease leaking, guards and keyway.  Noise could be caused by:


  • Misalignment
  • Imbalance
  • Loose Bolts
  • Lack of Lubricant
  • Chipped Teeth


Listen for abnormal noise.  Wearing/broken coupling may have a high-pitched squeak or rattle.

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Torbjörn Idhammar

President & CEO, IDCON Inc. Reliability and Maintenance Consultant

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