motor
Two Minute Tips
Rotor Evaluation Using MCEMAX® – Fp Frequency
Pole-pass frequency (Fp) sideband evaluation is one of the more established methods of rotor evaluation utilizing the current signature analysis test...
- Noah Bethel
- PdMA Corporation
Two Minute Tips
Rotor Evaluation Using MCEMAX® – The 5th Harmonic
Six independent methods of rotor evaluation can be used from the MCEMAX technology to analyze the condition of a squirrel cage AC induction motor...
- Noah Bethel
- PdMA Corporation
Articles
Large Electric Motor Reliability: What Did the Studies Really Say?
One of the most frequently quoted studies related to electric motor reliability is a 1983 Electric Power Research Institute (EPRI) project performed by General Electric...
- Howard Penrose
- MotorDoc LLC
Two Minute Tips
Performing a Demodulation of the Current Signal – Rotor Evaluation
Previously hidden in the noise platform of the current spectrum, now peaks related to belts, gears, fans and other machine train components can be easily identified and band alarmed...
- Noah Bethel
- PdMA Corporation
Two Minute Tips
Electric Motor Grease Selection
Electric motors require lubricants with specific characteristics; selecting the right grease can make all the difference in the protection and performance of the bearings...
- Patrick Loe
- Lubrication Engineers, Inc.
Articles
When to Use Custom Shims to Correct Soft Foot
One of the most common problems with alignment of machinery is a condition known as soft foot. This is when one or more of the machine feet are not making solid contact with the mounting base...
- Mike Olszewski
- Reliability Concepts
Five Minute Facts
Electric Motor Suffering Points
Motor life depends on bearing life, and bearing life depends on proper lubrication. Approximately 50-75 percent of electric motor failures are bearing related...
- Patrick Loe
- Lubrication Engineers, Inc.
Two Minute Tips
Electric Motor Grease Application
Common problems when greasing electric motors include over greasing, under greasing and not greasing at all – all of which can lead to premature electric motor failures. Additionally, operators often have to manually grease in hard-to-reach or unsafe areas...
- Preston Rubottom
- Lubrication Engineers
White Papers
NFPA 70E 2018 Edition – Changes and Implications for Personnel Performing Condition Based Maintenance Tasks
The 2018 Edition of NFPA 70E Standard for Electrical Safety in the Workplace, was released in late 2017 with little fanfare. However, there are several significant changes in this edition that have potentially wide-ranging implications for maintenance personnel...
- Rudy Wodrich
- IRISS
