Articles About DOE
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According to the Department of Energy (DOE), more than half of all electrical energy consumed in the U.S. is used by electric motors. To address this, several years ago, the DOE conducted a technical study as to what could be done to raise the efficiency levels of âœsmallâ motors. After years of study and litigation, the Small Motor Rule (SMR) was passed that covers two-digit NEMA frame single- and three-phase ¼ through 3 horsepower motors in open enclosures.
Energyâ™s endless energy efficiency game of whack-a-mole, motors have historically always been one of the go-to moles. Theyâ™ve been in the spotlight since 1992. Over the past few decades, repeated efficiency laws have seen motor efficiency get whacked into tighter and tighter shape.
University lab's motor eliminates pricey rare-earth magnets.
This issue, we're pleased to present our annual Buyers Guide. It's our comprehensive directory of suppliers of mechanical components, including gears, bearings, motors, couplings, clutches, brakes, gear drives and more. This directory represents our best effort to give you updated information about the companies who can provide you with the components you need to design, build and maintain better machinery.
If youâ™re an electrical engineer you know how an electric motor works; if you arenâ™t, it can be extremely confusing. Therefore, hereâ™s the simplified explanation (or the âœhow an electric motor works for dummiesâ version) of how a four-pole, three-phase AC induction motor works in a car.
Our politicians in Washington continue dithering over the Obama administration energy bill aimed at developing alternative, green sources of energy production. As a result, when this country will have a viable energy program in place is anyoneâ™s guess, given the usual D.C. gridlock. And yet, Americans can take more than cold comfort in the fact that at least some government agenciesâ”U.S. Department of Energy (DOE)â”and the private sectorâ”some major manufacturersâ”are doing more than their share of work in trying to harness our existing, fossil-based energy sources in such a way that they are used to their best efficiencies.
Experienced operators can often tell if a machine is not working properly, on the basis that it does not â˜sound right.â™ The same principle can be applied â” using modern electronics â” to identify the exact cause of the problem. Sensitive accelerometers can detect and analyze the vibrations from industrial equipment, highlighting problems such as misalignment or bearing imbalance. The technique is known as vibration analysis. It can identify bearing failure in the very early stages, when there is a microscopic defect on the raceway, for example. The problem is that the identifying signal is usually drowned out in all the other noise emanating from the machine.
There are few things in this world that elicit such a gleeful, childlike sense of wonder as does the word âœhoverboardâ.
Th e ISO defi nition of a full- complement bearing states that the bearing does not have a cage. When that defi nition was written, it was not technically possible to have a full-complement bearing with a cage. But SKFâ™s new high-capacity cylindrical roller bearing combines the load-carrying capacity of a fullcomplement bearing with the benefi ts of a bearing with a cage (Fig.1).
You may have noticed a lot of merger and acquisition activity lately in the power transmission industry. What does it mean?
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?
Japan's Electric Aspark Owl Does 0-to-60 MPH in 1.9 Seconds!
Does the definition of specific sliding mean the same between ISO 21771:2007 and AGMA 917-B97? In ISO, specific sliding is the ratio of the sliding speed to the speed of a transverse profile in the direction of the tangent to the profile. In AGMA, specific sliding is ratio of gear tooth sliding velocity to its rolling velocity.
Seems simple enough doesn't it? It is most decidedly not. Indeed, one can make the case that--aside from uppermost management (or ownership)-- no one else in a heavy/high-tech manufacturing concern has more ownership of the company's everyday needs and necessities than the purchasing department.
Remember Paul Winchell? Sure you do - if you are a child of the â™50s. Who of that period does not recall ventriloquist dummies Jerry Mahoney and Knucklehead Smiff?
Does the U.S. renewable energy solution lie offshore? An update on the status of offshore wind projects.
Grease lubrication has clear advantages over oil lubrication: Grease does not leak easily; it has sealing properties; and it protects bearing surfaces from corrosion. Its disadvantages are grease-life limitations and a limited cooling ability. Moreover, in some applications there is a risk of grease starvation, which leads to reduced lubricating films. However, if the right grease, sealing system and/or lubrication system are chosen, then grease lubrication offers clear benefits. This article summarizes aspects of grease lubrication mechanisms in rolling bearings.
How does one draw and mesh involute gear teeth in AutoCAD?
Letâ™s be clear about something up front here: Delta Gear does not make parts for lawnmowers. This is a fairly flippant point that falls under the timeless, clichéd designation of âœgoes without saying.â Yet, not all that long ago,Tony Werschky had to say it.
Regarding 3-D printing of gears and machine tools, etc. â” does plastic gearing have a future in 3-D printing/additive manufacturing?
News Items About DOE
1 Regal Announces DOE Grant for Marathon Motors Division (November 6, 2017)
Regal Beloit Corporation has announced that its Marathon Motors division has been awarded a U.S. Department of Energy (DOE) grant for res...
2 Hydraulic Institute Offers Free Webinar on DOE Rulemaking (April 20, 2016)
The Hydraulic Institute will be offering a complimentary webinar on the Overview of the U.S. DOE Energy Conservation Standard and Test Pr...
3 Giant Leap Technologies Receives Cooperative Award from DOE (August 5, 2016)
Giant Leap Technologies (GLT) has received a two-year, $2.2 million cooperative award from the U.S. Department of Energy SunShot Initiati...
4 Sunvapor Receives Cooperative Award from DOE (August 3, 2016)
Sunvapor recently announced that it is the recipient of a $2.2 million total cooperative award from the U. S. Department of Energy SunSho...