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Proper Repair/Rewind Practices Maintain Efficiency/Reliability of Premium Efficiency/IE3 Motors  DOWNLOAD THE EXECUTIVE SUMMARY

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Principles of Medium & Large AC Motors, 1st Edition - IEC

  • February 2020
  • Number of views: 1782
  • Article rating: 5.0

This manual covers horizontal and vertical squirrel-cage induction motors in the 300 to 5,000 horsepower range, low- and medium-voltage. Most of the principles covered apply to other sizes as well. This manual focuses primarily on IEC motors and standards.

V-belt drives: Common problems and their solutions

  • June 2015
  • Number of views: 1372
  • Article rating: 4.6

Two common scenarios that service centers deal with regarding belt drive applications are failure of a motor drive end ball bearing or breakage of the shaft at the drive end bearing shoulder. The cause of these failures often is over-tensioning of the v-belts. However, there are many other faults or undesirable practices that can lead to premature bearing failure, belt wear and sheave wear.  Due to practical space limitations, this article isn't exhaustive in its coverage but deals with common scenarios other than motor bearing failure and shaft breakage.

Vibration of Belt Driven Machines

  • June 2013
  • Number of views: 517
  • Article rating: No rating
Webinar recording

This presentation focuses on:

  • Identifying belt vibrartion
  • Identifying pulley pitch line run-out vibration
  • Other vibration sources
  • ODS analysis

V-belt drives: Proper installation and tensioning

  • September 2005
  • Number of views: 379
  • Article rating: No rating

Over-tensioning of belts can lead to shortened life for not only the belts, but also the sheaves and bearings of the motor and driven equipment. In some cases excess belt tension can result in motor shaft breakage. This technical article examines the proper installation and tensioning of V-belts.

Getting The Most From Your Electric Motors

Getting The Most From Your Electric Motors - coverThis 40-page booklet provides great advice for obtaining the longest, most efficient and cost-effective operation from general and definite purpose electric motors.

This booklet covers topics such as:

  • Installation, startup and baseline information
  • Operational monitoring and maintenance
  • Motor and baseline installation data
  • How to read a motor nameplate
  • Motor storage recommendations



EASA Technical Manual

EASA Technical Manual cover

The EASA Technical Manual is the association's definitive and most complete publication. It's available FREE to members in an online format. Members can also download PDFs of the entire manual or individual sections.


ANSI/EASA AR100-2020

ANSI/EASA AR100-2015 cover

Recommended Practice for the Repair of Rotating Electrical Apparatus
This is a must-have guide to the repair of rotating electrical machines. Its purpose is to establish recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.



EASA AR200: Guide for the Repair of Power and Distribution Transformers cover

Guide for the Repair of Power and Distribution Transformers
This document establishes guidelines for each step of the repair of power transformers, describing record keeping, tests, analysis, and general guidelines for the repair of power transformers.