| Power Transmission Engineering Magazine

Girls Love Science

April 1, 2015

Hi. My name is Renee. I’m 12. You might remember me from about a year ago, when my dad wrote about me and the home-made motor project we did together (“Make the Connection,” February 2014).

There Is a Great Future in Plastics

April 1, 2015

The first thing you see when you walk into Winzeler Gear is a pretty face. No, scratch that — the face is beautiful. Streamlined with chiseled cheek bones, delicate yet bold and strong, a half dozen photos of the feminine face line the building’s entranceway, enclosed tastefully in simple black picture frames, beckoning you to come further in with its pleasant warmth, repelling you to turn and leave with its foreign presence in such a location.

Plastic Bearings Have Staying Power

April 1, 2015

During the past three decades there has been an evolution in the advancement and use of highly engineered plastics in bearing applications.

Wind Pushing Future of Mechanical Components

April 1, 2015

After a sluggish 2013, annual installations of new wind turbines grew by 44% in 2014, according to the Global Wind Energy Council. And while much of that growth has been in Asia— particularly China, which now leads the world with 114 GW of installed capacity—the USA, Europe, and the rest of the world expect steady growth for the next couple of years as well (Fig. 1).

Servo Motor Performance at Stepper Motor Prices

April 1, 2015

Enhancing production with — and for — less is the standing order in today’s manufacturing world. Speeding up production while at the same time looking for ways, to cut, for example, energy costs, is a tricky equation with no single answer; where and how management goes about achieving that can take several paths.

Diametral Pitch Calculation

April 1, 2015

Circular pitch gives me the size of the teeth in my mind, but diametral pitch does not. What is the purpose of the diametral pitch concept? Does it merely avoid pi in calculation?

Mathematical Modeling for the Design of Spiroid, Helical, Spiral Bevel and Worm Gears

April 1, 2015

Spiroid and worm gears have superior advantages for hightorque and miniaturization applications. And for this reason they are particularly preferred in aerospace, robotic and medical applications. They are typically manufactured by hobbing technology, a process with a typical overall lead time of 4 to 14 weeks.

How to Get the Most Realistic Efficiency Calculation for Gearboxes

April 1, 2015

In recent years the estimation of gearbox power loss is attracting more interest — especially in the wind turbine and automotive gearbox industry — but also in industrial gearboxes where heat dissipation is a consideration as well. As new transmissions concepts are being researched to meet both ecological and commercial demands, a quick and reliable estimation of overall efficiency becomes inevitable in designing the optimal gearbox.

High Contact Ratio Gearing: A Technology Ready for Implementation

April 1, 2015

Today’s competitive industrial gear marketplace demands products with excellent reliability, high capacity and low noise. Surface-hardened, ground tooth gearing predominates, but the legacy tooth forms handicap further improvements in capacity and noise generation. Vehicle and aircraft equipment use tooth forms not found in the standard tables to achieve better performance — with little or no increase in cost. This paper will propose adopting these high-contact ratio forms to industrial use.

Product News

April 1, 2015

Industry news

April 1, 2015

News From Around the Industry

Global Industrial Outlook: Oil Slick, Currency Headwinds Worsen

April 1, 2015

End market conditions for the power transmission industry continue to worsen. With the Euro down 13% year to date and U.S. oil production surging we are seeing increasing headwinds, if not storm clouds, for the sector.