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April 2013

PT Issue

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Publisher's Page

Chasing the Dream

Over the past several weeks, I've had quite an interesting back-and-forth e-mail conversation with John Pellegrino, an engineer, inventor and dreamer whose letter appears on page 8.

Voices

Am I Wasting My Time

Reader John Pellegrino looks for advice on his pursuit of a positively engaged continuously variable transmission.

Technical Articles

Rolling Bearing Steels - A Technical and Historical Perspective, Part 2

This paper is part 2 of 2 in a series that summarizes the chemical, metallurgical and physical aspects of bearing steels and their effect on rolling bearing life and reliability.

Trends in Industrial Gear Oils

With today's smaller, hotter - and overloaded - machinery, specifying the correct lubricant is vital.

Electrical and Mechanical Torque Limiting

Q&A: My company manufactures high-speed metal forming machines. We have one application on a feed axis where we are encountering problems with the coupling...

Feature Articles

New Motor Technology

Novatorque energy efficient motors, Portescap smaller-size brushless DC motors, Pittman customized motors, Kollmorgen stainless steel motors, Crouzet expanded motor series, and a report from IHS on rare earth mineral supply.

Up in the Air - Aerospace Gears

Volatile aerospace market keeps gear manufacturers guessing.

Power Play

John Oldham: The Coupling Personified

A biographical sketch of John Oldham, inventor of the Oldham coupling.

Product News

Product News

SKF energy-efficient bearings, Bishop Wisecarver guided motion system, Weiss torque rotary table, Mico wireless braking system, Nord worm gear series, and SKF expanded range of couplings.

Industry News

Industry News

News from Timken, Klueber, Sumitomo, NFPA, and more from the April 2013 issue of Power Transmission Engineering

Events

Motion Drive and Automation at Hannover 2013

Power Transmission and control companies will be on hand during Hannover Messe 2013 to display the latest technology offerings in key product categories including roller bearings, gear wheels, pumps, motors, transmissions, drive system components, clutches and braking systems.

Calendar

The complete technical calendar from the April 2013 issue of Power Transmission Engineering.

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Power Transmission Engineering magazinePower Transmission Engineering is THE magazine of mechanical components. PTE is written for engineers and maintenance pros who specify, purchase and use gears, gear drives, bearings, motors, couplings, clutches, lubrication, seals and all other types of mechanical power transmission and motion control components.

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