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August 2017

PT Issue

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Harvesting Knowledge

The season of harvest is upon us. And I don't mean crops, although here in the U.S. Midwest, there's plenty of that going on, too. No, what I mean is knowledge, because in addition to being the end of the growing season, the transition between summer and fall also marks the busiest time of year when it comes to trade shows, conferences and industry gatherings.

Technical Articles

Baldor Motor Basics: Factors that Determine Industrial Electric Bills

A good deal of confusion exists regarding the factors that determine an industrial electric bill. The following information is presented to help sort out the various items on which billing is based, and to offer suggestions on measures to help control and reduce electric utility bills.

Rolling Bearing Service Life Based on Probable Cause for Removal - A Tutorial

A bearing service life prediction methodology and tutorial indexed to eight probable causes for bearing failure and removal are presented - including fatigue. Bearing life is probabilistic and not deterministic. Bearing manufacturers' catalogue (L10) bearing life is based on rolling-element fatigue failure, at which time 90% of a population of bearings can be reasonably expected to survive, and 10% to fail by fatigue. However, approximately 95% of all bearings are removed for cause before reaching their L10 life. A bearing failure can be defined as when the bearing is no longer fit for its intended purpose. For a single bearing, you can only predict the probability of a failure occurring at a designated time - but not the actual time to failure.

Feature Articles

Six Key Elements of Gearmotor Optimization

How to Ensure Reliable Performance, Increased Efficiency and Lowest Total Cost of Ownership.

Tailor-Made

The Role of Coupling Technology in Current Developments in Industry

Coupling Connection

Couplings and harsh environment use

Getting to Know Your Bearing

Software Design, Analysis and Calculation Tools Help Solve Today's Engineering Challenges

Software Bits

The latest updates in software for bearing design.

Ask the Expert

Gear Span Measurements

A reader is looking for the best reference materials with formulas for gear measurements over pins.

Product News

Product News

The latest tools and techologies in power transmission, motion control and related components.

Industry News

Industry News

Schaeffler invests in North America, plus other news from around the industry.

Events

Pack Expo: The Push to Automation

With Pack Expo Las Vegas around the corner, we took a look at the state of the packaging industry today to see what you can expect at the show. The answer is more automation.

Calendar

The complete technical calendar from the August 2017 issue of Power Transmission Engineering.