Latest Motors Articles

A variable frequency drive’s effect on system efficiency and motor life
End users must include bearing clearance as an integral part of designing or building a pump.
Learn how to avoid misinterpretations.

Last year, a Pumps & Systems reader asked about matching variable frequency drives (VFDs) and motors.

Equipment and technology improvements can be sound investments.
In the food industry, stainless steel performs more productively and efficiently.
A simple mathematical model can be used to estimate vibration at the top of the motor in a vertical pump-motor structure.
Understanding resonance is essential for solving problems of increased vibration.
The biggest decision is determining which tolerances to align.
Cost-effective solutions reduce harmonics and improve system reliability, efficiency.
The benefits of these motors provide the flexibility needed for challenging pump applications.
Electric motors have had a huge impact on the pump industry.
Improved motor starters help Fabri-Kal achieve its green vision.

I received many comments on my four-part series on AC Power, and most of them were very positive.

As a follow up on my AC Motors series, I thought it would be a good idea to provide a short overview of work, power and torque as it applies to the AC motor.

The industrial motor world has a new specification available for defining the requirements of general purpose, severe duty motors in the 250- to 3,000-hp range.

Last September, we spoke about the importance of pipe-to-piping alignment, evaluating actual numbers, and tabulating stress values as they approach yield stress of pipe at various values of misalignment. This time, we will discuss the effects of pump-to-motor misalignment, beyond hype or generalities, by numerically quantifying the conclusions.

This month we will quickly look at the load types that comprise a typical AC circuit.

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