December 2017

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December 2017 (Complete Issue PDF)

Feature Articles

CNC System Upgrades
Automated production of large objects such as auto body prototypes, boat hulls and surfboards traditionally requires computerized numerical control (CNC) systems costing nearly a million dollars. Thomson Cuts Costs and Production Time for Autoscale Inc.

Force Control Assists in Helicopter Transmission Overhaul
Oil shear brake technology is the key to quick and reliable test stand development.

Gear Expo 2017 Follow-Up
The following recap looks at some of the exhibitors from Gear Expo that manufacture mechanical power transmission components or provide resources for these components.

2017 PTE Buyers Guide
The 2017 Power Transmission Engineering Buyers Guide was compiled to provide you with a handy resource containing the contact information for significant suppliers of power transmission and related components.

Technical Articles

Progress in Rolling Bearing Technology for Refrigerant Compressors
Various surface treatment and bearing technology solutions are explored to solve challenging lubrication regimes.

Baldor Motor Basics - Part 9
Amps, Watts, Power Factor and Efficiency; Approximate Load Data from Amperage Readings; Power Factor Correction on Single-Induction Motors.

Vibration and Operational Characteristics of a Composite-Steel (Hybrid) Gear
Free vibration and dynamic operation testing of hybrid gears at NASA Glenn Spur Gear Fatigue Test Facility; hybrid gears are compared to their steel counterparts.


10 Years and Counting (Publishers Page)
Just over 10 years ago, we started publishing Power Transmission Engineering, and I'm proud to say we're still going strong.

Gear Design (Ask the Expert)
Our expert explores standard vs. optimized gears, as well as high contact ratio gearing.

Product News (Product News)
The complete Product News section from the December 2017 issue of Power Transmission Engineering, featuring the latest from SKF, R+W, Brecoflex, Nexen, Güdel, Renold Gears, Hansford Sensors, Ogura Industrial, Igus, Destaco, Röhm and Iwis.

Calendar (Events)
The complete Technical Calendar from the December 2017 issue of Power Transmission Engineering.

Industry News (Industry News)
The complete Industry News section from the December 2017 issue of Power Transmission Engineering.

History of a Forgotten Engine (Power Play)
In 2017, there's more variety to be found under the hood of a car than ever. Electric, hybrid and internal combustion engines all sit next to a range of transmission types, creating an ever-increasingly complex evolutionary web of technology choices for what we put into our automobiles. But every evolutionary tree has a few dead end branches that ended up never going anywhere.