ANSI/EASA AR100-2020 cover

ANSI/EASA Standard AR100-2020
ANSI/EASA AR100-2020: Recommended Practice for the Repair of Rotating Electrical Apparatus is a must-have guide to the repair of rotating electrical machines. It establishes recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.

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For information about ANSI/EASA AR100 or questions about the work on this standard, contact:

Mike Howell, PE
EASA Technical Support Specialist
+1 314 993 2220
mhowell@easa.com

ANSI Accredited Standards Developer Information

Electric motor bearing lubrication frequency and quantity

January 2019
Number of views: 16134
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

Categories: Bearings, Lubrication

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The Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors
Tests prove Premium Efficiency/IE3 Motors can be rewound without degrading efficiency.

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EASA Good Practice Guide

Good Practice Guide to Maintain Motor Efficiency
Based on the 2019 and 2003 Rewind Studies of premium efficiency, energy efficient, IE2 (formerly EF1) and IE3 motors

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