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Resource Library

Root Cause Failure Analysis, 2nd Edition

  • September 2019
  • Number of views: 678
  • Article rating: 5.0
Book

This book was developed to help electric motor technicians and engineers prevent repeated failures because the root cause of failure was never determined. By using a proven methodology combined with extensive lists of known causes of failures, one can identify the actual cause of failure without being an “industry expert.” In fact, when properly used, this material will polish one’s diagnostic skills that would qualify one as an industry expert.

Principios de Motores C.A. Medianos y Grandes

  • February 2019
  • Number of views: 195
  • Article rating: No rating
Book

Las versiones impresas, en CD-ROM y en forma de descarga del valioso manual didáctico / recurso de EASA, “Principios de Motores C.A. Medianos y Grandes”, se  ahora disponibles en inglés y en español. El manual incluye gráficos e ilustraciones, fotografías y mucha información técnica sobre máquinas C.A., incluyendo como funcionan, información específica sobre los tipos de encerramientos, fabricación de componentes y aplicaciones.  Muchos de los principios incluidos en el libro aplican a todos los motores C.A., especialmente a aquellos accesorios que fueron asociados en el pasado con las máquinas más grandes (como encoders, RTDs, termostatos, calentadores de espacio, sensores de vibración, etc.).

Vertical Turbine Pump Shaft & Bearing Types, Fits and Clearance

  • November 2018
  • Number of views: 210
  • Article rating: No rating
Webinar recording

This webinar recording covers:

  • Shaft material and specs
  • Shaft coupling types
  • Machining for shafts
  • Bronze, plastic, graphite and cutlass bearing options
  • Bearing clearance concerns and reference data 
  • Bearing housing fits

Converting motors from horizontal to vertical mount

  • September 2018
  • Number of views: 132
  • Article rating: No rating
Article

Occasionally an end user wants to take a motor designed for horizontal mounting and use it in a vertical position. In this article, we will address some of the key mechanical factors that should be considered when applying a horizontal ball bearing motor in a vertical mounting position.

Convirtiendo motores de montaje horizontal a vertical

  • September 2018
  • Number of views: 96
  • Article rating: No rating
Article

De vez en cuando un usuario final quiere utilizar un motor diseñado para montaje horizontal en posición vertical. En este artículo, trataremos algunos factores mecánicos clave que deben ser considerados cuando se utiliza un motor horizontal con rodamientos de bolas en una aplicación en la que trabaja en montaje vertical. La Figura 1 ilustra un motor horizontal en posición vertical con el eje hacia abajo.

Los factores clave incluyen:

  • Capacidad de carga axial del rodamiento que soporta el peso del rotor.
  • Peso del rotor
  • Peso de los elementos acoplados al eje de salida
  • Empuje axial de los equipos de impulsión acoplados directamente
  • Trayectorias de lubricación de los rodamientos
  • Retención del lubricante de los rodamientos
  • Orientación del eje: Hacia abajo o hacia arriba
  • Protección contra ingreso
  • Fijación axial del rodamiento de empuje

ANSI's New Shaft Alignment Standard

  • July 2018
  • Number of views: 157
  • Article rating: No rating
Webinar recording

This webinar introduces you to ANSI's new shaft alignment standard.
Topics covered include:

  • A discussion of alignment Quality grades, AL 1.2, AL 2.2, AL 4.5
  • Shaft alignment tolerances
  • Issues affecting measurements
  • Conditions affecting alignment stability

Two case history examples point to need for caution with metal spray

  • June 2018
  • Number of views: 166
  • Article rating: No rating
Article

Two case histories point out the need for caution when working with metal sprayed shafts:

  • Example 1: When measuring the bearing fit shaft size, the micrometer didn’t feel right; mushy, not solid, although the journal was very close to the specified size. After using two micrometers to experiment with one of these frosted fits, it was discovered that the measurement on one micrometer changed when tightening down the other micrometer and vice versa.
  • Example 2: The bearing journals on a large armature began to fail while the armature was coming up to speed in balance stand.

Dos ejemplos de casos que indican la necesidad de tener cuidado con el metalizado

  • June 2018
  • Number of views: 74
  • Article rating: No rating
Article

En mi centro de servicio hemos visto problemas en ejes previamente reparados que fueron metalizados. En estos casos recibimos motores para revisión. Después de la inspección y de medir los ajustes de los rodamientos en el eje, encontramos algo que simplemente no se “sentía” bien. Podríamos decir por la apariencia que los ejes habían sido reparados antes de la revisión actual.

Vertical Turbine Pump Shaft Journal Bearing Material, Types and Clearances

  • December 2017
  • Number of views: 88
  • Article rating: No rating
Webinar recording
  • The rules of thumb often applied to journal bearings in horizontal machines don’t apply to vertical machines.
  • Vertical turbine pumps are a common example.
  • This webinar explains the characteristics of bearings in these pumps and provide examples of manufacturers specifications.
  • In addition, specialty bearing materials will be discussed in regard to applications, specifications and installation.

EASA Technical Manual

  • August 2016
  • Number of views: 144
  • Article rating: No rating
Book

EASA's most comprehensive technical document is available FREE to EASA members. Download the complete manual or just the sections you're interested in.

Getting The Most From Your Electric Motors

Getting The Most From Your Electric Motors - coverThis 40-page booklet provides a great marketing tool for your service center! Use it to provide end users with information that will help them obtain 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

READ MORE ABOUT THE FEATURES AND BENEFITS

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.

VIEW & DOWNLOAD

ANSI/EASA AR100-2015

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 AR200

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.

LEARN MORE