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Power Transmission Engineering

June 2015

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Intelligent Integration

June 1, 2015
In this issue’s cover story, Stefan Hantke describes an evolving marketplace that requires smarter components and more integrated solutions. In fact, Hantke, who was recently named head of global industrial sales for the Schaeffler Group, goes so far as to predict that within a few short years, every bearing will have a wire coming out of it.
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Feature Articles

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The True Cost of Bearing Lubrication

June 1, 2015
Machine and equipment manufacturers today are feeling more pressure than ever to reduce costs without sacrificing machine performance — a balancing act difficult to achieve. OEMs often overlook a simple solution that can have a positive, long-term impact on profitability for themselves and their customers, i.e. — the elimination of bearing lubricant.
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Dont Tap the Glass

June 1, 2015
Behind a thick sheet of unblemished glass that stretches from wall-to-wall, ceilingto- floor at Delta Gear, just south of a shop lined with ultramodern grinding machines whirring away, is Scott Sakuta’s aquarium.
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The Path to Smarter Bearings

June 1, 2015
At Hannover Messe, Power Transmission Engineering had the opportunity to sit down with Stefan Hantke, president of the Industrial North America division of Schaeffler USA, to discuss the current stateof- the-art in bearings manufacturing, the trends in industrial bearings and the current state of U.S. manufacturing. (In the meantime Stefan Hantke has taken over responsibility for the global sales activities of Schaeffler Industrial)
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Transmissions in Transition

June 1, 2015
Experts gathered at the 9th CTI Symposium to discuss the challenges of reducing noise, improving energy efficiency and meeting the changing demands of the marketplace
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Tales from the Bearings Blog

June 1, 2015
The following short articles first appeared on www.powertransmission.com. They are part of the ongoing series of hints, technical tidbits and inside knowledge presented by our resident blogger, Norm Parker. If you like what you see here and are interested in learning more, visit www.powertransmission.com/blog.
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Stepper Motor Actuators

June 1, 2015
How would you compare the efficiency and capabilities of hybrid stepper motor actuators vs. can stack stepper motor actuators?
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Technical Articles

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Calculation of the Efficiency of Worm Gear Drives

June 1, 2015
This paper presents a physically grounded calculation method to determine the efficiency of worm gear drives. This computation is based on the Institute of Machine Elements, Gears, and Transmissions (MEGT) tribological simulation, which can determine the local tooth friction coefficients (Ref. 1). With this knowledge other power losses such as the bearings, oil churnings and seals power losses can also be calculated.
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Theoretical and Experimental Study of the Frictional Losses of Radial Shaft Seals for Industrial Gearbox

June 1, 2015
The improvement of the energy efficiency of industrial gear motors and gearboxes is a common problem for many gear unit manufacturers and end-users. As is typical of other mechanical components, the radial lip seals used in such units generate friction and heat, thus contributing to energy losses of mechanical systems. There exist today simulation tools that are already helping improve the efficiency of mechanical systems — but accurate models for seal frictional losses need to be developed. In this paper SKF presents an engineering model for radial lip seal friction based on a physical approach.
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Product News

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Industry News

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Market Update

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Global Industrial Outlook: Slow Growth Ahead; Farm Belt No Help

June 1, 2015
First quarter results confirmed our view. Capital expenditures are being slashed in the oil sector, the stronger U.S. dollar is enabling Japanese machinery competitors to gain share in the Middle East and Latin America, and lower soft commodity prices translate into a continuing North American decline in demand for farm equipment.
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Events

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Calendar

June 1, 2015
Calendar of Events in the industry that are coming in the future.
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Power Play

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Surviving the Robot Revolution

June 1, 2015
It had no arms or legs to speak of; no fleshy, meaty exterior or squishy insides; no heart, no brain, no soul. It was just a protracted steel body, long and spindly, a rectangular “head” at the end, and one glowing sensor. It wasn’t alive. It wasn’t sentient. It was a robot.
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