Chuck Yung

Chuck Yung is a senior technical support specialist at EASA, St. Louis, MO; EASA is an international trade association of more than 1800 electromechanical sales, service and repair firms in nearly 80 countries.


Motors & Drives October 7, 2019

How to deal with wet or flooded motors

Saltwater becomes a major problem.

By Chuck Yung
Plant Automation June 24, 2016

Sleeve bearing clearance depends on many factors

They can’t all be right, yet many of us may have used one of these rules (probably not the same one, either) with great success. Which one, if any, is correct? The answer depends on the application.

By Chuck Yung
Mechanical & Electrical February 3, 2016

Cool facts about cooling electric motors

Whether it's an old or new design, the process of lowering motor temperatures is based on same principles.

By Chuck Yung
Mechanical & Electrical April 13, 2015

Relationship of torque and shaft size

A rudimentary understanding of how shaft sizes are determined can be helpful to anyone who works with pumps, fans, elevators or any other motor-driven equipment. Engineers often design using an ample safety factor, but consider modifying a shaft only with good engineering support. The greater the consequence of failure, the more generous the safety factor should be.

By Chuck Yung
Motors & Drives October 20, 2014

Keeping it simple: Steps to determine motor’s actual load

Oversized motors cost more to operate—sometimes a lot more. Fortunately, there’s a simple procedure for determining the actual hp required by a load, without expensive equipment or engineering.

By Chuck Yung
Predictive and Preventive Maintenance September 3, 2013

Disaster recovery plans, procedures

In the wake of the natural disasters, maintenance professionals and motor repairers need creative solutions to speed the removal of moisture and contamination from thousands of swamped motors.

By Chuck Yung
Predictive and Preventive Maintenance September 3, 2013

Common misconceptions about how to dry wet motors

Two mistaken ideas about how to dry wet windings have persisted for years. One is that heating the windings with a welding machine is good way to dry out an electric motor. The other is that windings should not be dried at oven temperatures above 180 F.

By Chuck Yung
All Articles