April 29, 2021
You’re trying to select a vendor to perform some repairs (and possibly a rebuild) on one of the critical yet problematic motors in your facility. You’ve received some good bids and are reviewing the vendors under consideration when you notice that one says they have a good relationship with the vendor of the motor you …
May 28, 2020
If you have a specific NEMA-T frame motor, you can be assured that, regardless of the manufacturer, that specific T frame (for example, a 324T) will have the same shaft length, shaft diameter, and bolt hole mounting dimensions. However, what many people don’t realize is that the physical size of specific T frame motors can …
April 18, 2020
Bearings account for about 51% of all electric motor failures and the most common sources of failure involve normal wear and tear, lubrication issues, contamination, or electrical damage that affects the bearing surfaces. While rolling element bearings are the most common type of bearing, sleeve bearings are found most often in larger motors that require a …
July 2, 2019
An informative video about AC Synchronous Motors Below is a 5 minute video from an hour long presentation given by Todd Hatfield, Senior Electrical Engineer at HECO – All Systems Go, during the 2018 Reliability, Process, and Maintenance (RPM) Symposium. This clip covers the basis of synchronous motors and how they differ from induction motors. …
June 12, 2018
In today’s day and age you can put any motor part or catalog number into an internet search engine and come back with numerous places to purchase the unit. Being that the maintenance world tends to be on the reactive side of purchasing this makes it easy to get your hand on a product right …
August 21, 2017
Everyone who deals with vendors has a choice to make. Should you beat them up and show them “who’s boss” or should you partner with them in the spirit of cooperation? Which one do you choose? Can you do both? There are a lot of articles on managing vendor relationships, many people much smarter than …
December 1, 2016
Todd A. Hatfield – Vice President of Engineering & Repair, HECO This is the second article (video) in a series of articles on The Basics of AC Induction Motors. The first video explored the basic principles of AC Induction motors focusing on magnetism, electromagnetic induction, AC current, and rotating magnetic fields. This segment discusses the …
November 14, 2016
Todd A. Hatfield – Vice President of Engineering & Repair, HECO This is the first article (video) in a series of articles on The Basics of AC Induction Motors. This video explores the basic principles of AC Induction motors. This segment discusses magnetism basics, the law of electromagnetic induction, AC current, and the explanation of …
May 2, 2016
What’s up with motors? Motors are reliable as can be when managed and maintained properly. To a point. Then they still fail. It’s up to you to then make decisions quickly and get production running again Here’s the rub. You need to realize that the decisions made during these times can significantly impact future reliability …
April 6, 2016
Large electric motors, those of 400HP or more, are typically referred to as Above-NEMA or A-NEMA electric motors. When it comes time to purchase one (either new or previously owned), it’s vitally important that when bidding manufacturer to manufacturer, they are all given the same parameters. There is tremendous value in saying “This is what …
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