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Electric motor bearing lubrication frequency and quantity

  • January 2019
  • Number of views: 12399
  • Article rating: 5.0

By Tom Bishop, P.E.
EASA Senior Technical Support Specialist

Considerations for lubrication frequency and quantity for electric motors (and generators) include the following:

  • Is the lubricant grease or oil?
  • Is the bearing type sleeve, ball or roller?
  • If it is a ball bearing, is the enclosure open, shielded or sealed?

In this article we will address the above by breaking them down into the following categories:

  • Grease lubrication frequency and quantity for ball and roller (rolling element) bearings.
  • Oil lubrication frequency and level (relates to quantity) for ball and roller bearings.
  • Oil lubrication frequency and level (relates to quantity) for sleeve bearings.

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AVAILABLE IN SPANISH

ANSI/EASA AR100

More information on this topic can be found in ANSI/EASA AR100
  • Section 2: Mechanical repair

EASA Technical Manual

More information on this topic can be found in EASA's Technical Manual
  • Section 9: Lubrication

Related Reference and Training Materials

Principles of Medium & Large AC Motors (NEMA Standards)
  • Section 10: Bearings & Lubrication

Principles of Medium & Large AC Motors (IEC Standards)
  • Section 10: Bearings & Lubrication

Root Cause Failure Analysis
  • Section 2: Bearing Failures

Fundamentals of DC Motors & Operation Tips
  • Section 11: Failure Analysis

Mechanical Repair Fundamentals of Electric Motors
  • Section 3: Testing & Inspection Procedures
  • Section 5: Bearings

Fundamentals of Pump Repair
  • Section 2: General Pump Repair Procedures

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Categories: Bearings, Lubrication
Tags: Bearings Lubrication
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