Want to Know More?
Tyler Voss Membership & Communications Specialist+1 314 993 2220tvoss@easa.com
SEND ME MORE INFORMATIONJOIN EASA
REGISTER FOR UPCOMING TRAINING
GO TO LEARNING CENTERLEARN MORE FAQsBUY RENEWVIEW/MANAGE ENROLLMENT INFO
Need an Accredited service center?Find a service center that has proven they repair electric motors in accordance with ANSI/EASA's AR100.
VIEW THE LISTLEARN MORE ABOUT THE PROGRAM
DOWNLOAD ACCREDITATION CHECKLISTACCREDITED? VIEW YOUR RECORDS
Want To Revisit The Convention?Recordings and handouts from EASA 2026 events are available to attendees and exhibitors. If you didn't attend, you can still buy access streamed from EASA's website! These recordings provide just over 32 hours of training.
ACCESS NOW LEARN MORE BUY ACCESS
Engage locallyEASA's international membership is divided into 10 Regions that are made up of 32 Chapters.
EXPLORE CHAPTERS & EVENTS NEAR YOUCHAPTER OFFICER RESOURCES
SEARCH THE ONLINE STORE
CUSTOM BRANDED PRODUCTSDOWNLOADS YOU HAVE PURCHASEDVIEW YOUR PURCHASED TRAININGVIEW CONVENTION RECORDINGS
Eugene Vogel EASA Pump & Vibration Specialist
On occasion, service centers are asked to balance fan blades that are designed for an overhung mounting. The fan blade may be received mounted on the shaft, or without any shaft. The decision has to be made about how to mount the rotor in the balancing machine. One solution is to fabricate a mandrel to balance the fan blade between the machine pedestals. The other alternative is to mount the fan blade on the end of the shaft in an overhung configuration, with the fan blade outboard of both balancing machine pedestals. This would be the more expedient method if the fan blade is already mounted on the shaft in the overhung configuration.
As long as the fit of the fan blade to the shaft doesn’t change (when using a mandrel), it can be mounted in either configuration for balancing without affecting the results. If the fan blade is balanced in one configuration, it is balanced for the other.
How the fan blade is mounted doesn’t change the balance, as long as the fit to the shaft doesn’t change. So the question is, “Which is easiest?” Often it is easiest to mount the rotor in the overhung configuration, but balancing in that configuration presents some challenges. Those challenges are addressed here.
LOGIN TO VIEW AND DOWNLOAD THE ARTICLE
