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Electric Motor Bearing Lubrication

  • April 2022
  • Number of views: 4639
  • Article rating: No rating
FREE for Members of EASA
Webinar recording

This webinar recording reviews electric motor bearing grease and oil lubrication frequency and quantity, as well as procedures.

Fundamentos de Reparación Mecánica de Motores Eléctricos

  • March 2022
  • Number of views: 10085
  • Article rating: 3.0
Book

En toda reparación mecánica, la capacidad para desmontar, reparar y volver a montar el motor de forma apropiada sin dañar innecesariamente ninguna de sus piezas es fundamental.

Esta obra contiene muchas sugerencias sobre el manejo apropiado de las diferentes partes de un motor para minimizar los daños durante el proceso de reparación. Sin embargo, es imposible desarrollar un listado que las incluya todas.

En cambio, el principio básico de tomarse el tiempo para usar la herramienta adecuada y por lo general el procedimiento apropiado guiará a los técnicos por el camino correcto.

Fallos en los Rodamientos de Elementos Rodantes de un Motor

  • March 2022
  • Number of views: 3487
  • Article rating: No rating
Article
El propósito de este artículo es proporcionar suficientes fundamentos de rodamientos para que aquellos que son responsables de la aplicación, operación, mantenimiento y reparación de motores eléctricos puedan tomar las medidas necesarias para minimizar las fallas prematuras de los rodamientos y mejorar la posibilidad de que los rodamientos duren hasta el " "final de la vida útil", que normalmente se denomina vida útil del rodamiento L10.

Motor Rolling Element Bearing Failures

  • March 2022
  • Number of views: 3665
  • Article rating: No rating
Article

The purpose of this article is to provide enough rolling element bearing fundamentals so those who are responsible for the application, operation, maintenance and repair of electric motors can take the necessary steps to minimize premature bearing failures and enhance the possibility of bearings lasting until the "end of life" predictions, which is normally referred to as L10 bearing life.

Sleeve Bearing to Ball / Roller Bearing Conversion Procedures and Cautions

  • December 2020
  • Number of views: 10266
  • Article rating: 5.0
Article

There are times when an application calls for a motor to carry a radial load for which sleeve bearings are not suitable. In cases such as low rpm, unusual frames, etc., it may be desirable to convert a customer's existing sleeve bearing motor rather than obtaining a ball/roller replacement motor. This article contains suggested procedures as well as cautions about potential problems with such conversions.

Procedimientos y Precauciones al Convertir Cojinetes de Deslizamiento a Rodamientos de Bolas/Rodillos

  • December 2020
  • Number of views: 9193
  • Article rating: No rating
Article

Existen ocasiones en las que una aplicación requiere que un motor soporte una carga radial para la que los cojinetes de deslizamiento no son adecuados. En casos como bajas revoluciones, carcasas inusuales, etc., puede ser conveniente convertir el motor del cliente montado sobre cojinetes de deslizamiento envés de obtener un motor de repuesto con rodamientos de bolas / rodillos. Este artículo contiene procedimientos sugeridos y advertencias sobre problemas potenciales relacionados con dichas conversiones.

Vertical Motor Operation and Repair

  • June 2020
  • Number of views: 14608
  • Article rating: 5.0
FREE for Members of EASA
Convention presentation

Vertical motors differ from horizontal motors in numerous ways, yet some view them as “just a horizontal motor turned on end.” The obvious differences are the (usually) thrust bearings, with arrangements varying from single- to three-thrust bearings with different orientations suited for specific load, rpm and applications. Less obvious differences are in the ventilation arrangements, shaft stiffness, degrees of protection and runout tolerances. This recording will cover those topics.

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

  • February 2020
  • Number of views: 48207
  • Article rating: 5.0
Book

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.

AC Motor Assembly and Testing

  • August 2018
  • Number of views: 8800
  • Article rating: No rating
Webinar recording

This webinar recording focuses on:

  • Motor assembly issues
  • Electrical and mechanical inspection
  • Static and run testing
  • AC motors with ball, roller and sleeve bearings

Synthetic lubricants for use in rolling element bearings

  • November 2017
  • Number of views: 9184
  • Article rating: No rating
Article

My first exposure to synthetic lubricants for rolling element bearings was during repair of high-speed, automotive engine-test dynamometers. For several years, our service center had repaired similar machines with rolling element bearings, but they were all oil lubricated by pump systems with specially-selected fittings near the bearings to deliver only small amounts of oil per minute.

We began to see rolling-element-bearing machines in for repair that were grease lubricated, and these displayed a specific make and type of lubricant on the nameplate. We purchased what was specified on the nameplate and all was well. Over time, we began to see more machines specifying the same make of grease, but a different grade or type. This led me to begin looking into the differences in the products.

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

LEARN MORE AND DOWNLOAD MÁS INFORMACIÓN Y DESCARGAR BUY PRINTED COPIES

READ MORE ABOUT THE FEATURES AND BENEFITS

EASA/AEMT Rewind Study

EASA Rewind Study cover

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

DOWNLOAD THE FULL RESULTS

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.

DOWNLOAD - ENGLISH

DESCARGAR - ESPAÑOL

EASA Technical Manual

EASA Technical Manual cover

Revised September 2022
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.

VIEW & DOWNLOAD