Common Preventable Electric Motor Failures: Bearings

This video is a 15-minute segment of an hour-long presentation presented by Todd Hatfield of HECO at the 2017 Reliability, Process, and Maintenance Symposium. This presentation discusses common preventable causes of electric motor failures. This section of the presentation discusses bearing related failures as bearings account for about 51% of all electric motor failures.
This presentation discusses bearing failures related to:
Insufficient lubrication
Too much lubrication
Mixing incompatible lubricants
Contamination
Electrical damage or fluting
Besides showing the issues, this presentation discusses what you may be able to do to help prevent these failures from occurring.

[@Orgakoyd]

I was under the impression that most motors in common use have sealed bearings without provision for re-greasing. Certainly every motor I have seen other than old plain bearing motors. I always thought bearings mostly fail from contamination (dirt, water) and improper loading (too much belt pull, high imbalance etc). How common is greasing motor bearings in industry? Does someone know?

[@markgurney8682]

Third option quite alot cheaper is nano crystalline Emf Cores stops the common mode current at the source protecting motor insulation. Grounding rings and insulated bearings don't offer this protection. 3Phi

[@ram31299]

Do you have full training sessions? Wether classroom or online? Can I get the link in case..

[@arielhernandez7970]

Hello. I have just begun to see the video, and I have a question: How you may know if the motor is in the wrong application or sized incorrectly?

[@AdrielSjahfiedin]

Usually you would read the specifications within the nameplate of the motor and if it suits the environment and workload.