Articles About power density
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Power density is a key factor in gear design. Increasing the power density enables engineers to use smaller gears for their applications which lead to smaller and lighter gear boxes. The benefit for example for the automotive industry is less moving load in the vehicles and therefor a reduction of fuel consumption and subsequently a reduction of CO2 emission. The limiting factor for the increase in power density of gears is the material strength in regard to the critical failure mode.
The development of a new, gas-carburized gear steel, necessitated by a customer-driven specification, has not only increased the power density in an existing gearbox design, but has done so without requiring any significant change to production processes or heat treatment equipment.
On the tradeoffs between power density, efficiency and cost for high-performance, electric motors in choosing the most applicable technology for a specific application.
Increasing power density and improving cylinder lifespan are key issues.
Engineers are often challenged with the seemingly impossible task of doing more with less. Customers want more power transmitted in a smaller space, they want more efficient designs, and, of course, they want to spend less money. So engineers are always looking for ways to squeeze the most out of their mechanical systems. Theyâ™re constantly working to maximize power density, increase energy efficiency and reduce costs to meet their customersâ™ needs.
The world of high horsepower drives often calls for mechanical design to be approached from different perspectives. As motors, gearboxes and machines increase in size, power density can become disproportionate from one driveline component to the next, emphasizing the need for more rugged, robust and compact equipment.
In planetary gear systems of high power density and high gear ratio, helical gears create undesirable tilting moments on the planet gears; therefore, spur gears are still preferred for planetary gears -- a special challenge with respect to noise. Specifically, the different behavior of planetary gears with sequential and symmetric gear mesh is explained in this paper.
If torque conversion with high gear ratio, compact installation space and 90-degree axis-crossing angle is needed, often worm gears are used. Due to their high power density and sliding speeds within the tooth contact, frictional heat and thermal stresses are higher compared to helical, bevel and hypoid gears, and thus the thermal load capacity of worm gears is lower.
Key technical drivers which can be addressed by advanced PM manufacturing technologies are, for example, the need for system downsizing in transmissions and differentials, the need for developing systems with higher power density and the strong NVH (Noise Vibration Harshness) requirements - especially for electrified transmissions or e-axle solutions.
In the 1984 film Ghostbusters, Bill Murray and company were asked by Gozer the Gozerian to "choose the form" of their destructor. It was a no-win scenario for the heroes, because no matter what they chose, they were still going to face death
Gear drives focus on longevity, quality and customization.
The American Gear Manufacturers Association has evolved its trade show. What was formerly Gear Expo is now the Motion + Power Technology Expo (MPT Expo), an event intended to represent the entire motion and power transmission supply chain. As part of the expansion of the showâ™s scope, AGMA has partnered with the NFPA (National Fluid Power Association) to include a fluid power pavilion and additional educational sessions.
Coming off of a stellar 2017 for the wind power industry, Wind Power 2018 is all about carrying that momentum forward.
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.
The complete Industry News section from the October 2018 issue of Power Transmission Engineering.
The complete Industry News section from the October 2017 issue of Power Transmission Engineering.
With Thanksgiving right around the corner, it's hard not to think of the smorgasbord most of us experience on America's most food-centric holiday. If your family celebrates like mine, then there's always plenty of food—and more importantly—plenty of choices.
Highlights from some of the gear, gear drive, power transmission component, software, materials and related exhibitors at Gear Expo 2017.
A look at recent installations, plus interviews with some wind industry insiders.
Heavy industry. The phrase conjures images of mines and steel mills, of huge caverns underground, of cavern-like factories, of oldline companies operating heavy-duty machines for hightorque work. That's the image of heavy industry. Today, though, there's also another image. It's of an operator walking a steel mill's floor, looking at his smartphone or his tablet.
Amps, Watts, Power Factor and Efficiency; Approximate Load Data from Amperage Readings; Power Factor Correction on Single-Induction Motors.
Just over 10 years ago, we started publishing Power Transmission Engineering, and I'm proud to say we're still going strong.
Latest Sealing Technologies Offer Optimum Wear and Frictional Characteristics.
Navigating Clutch/Brake Operation in Harsh Environmental Conditions: Chemicals, saltwater, food particles, heat, dust, and electrical corrosion are just a few of the many issues that can cause clutches and brakes to fail prematurely.
Valves help control temperature, pressure and viscosity for alcohol fermentation.
Zach Rountree's life would be a lot easier if his job site was closer to town. As the owner and president of Rountree Construction, he oversees an operation that pulls 200 tons of material an hour out of a remote lake in Stockton, Georgia. Big equipment demands three-phase power, but out in the remote timberlands of rural Georgia, only single-phase power was available.
About once per year, we make a concerted effort to get you, our readers, to renew your subscriptions to Power Transmission Engineering. Well, it's that time again.
I went to pick up a pizza the other day and had a hard time finding a spot in the restaurant's lot. I was a little surprised by this, because I personally haven't eaten in a restaurant in about a year. But there were lots of people inside, eating at tables - acting almost as if life were normal.
In May, Gov. Mike Parson of Missouri sat down and recorded a video on behalf of AGMA's upcoming Motion+Power Technology Expo
The complete Product News section from the April 2021 issue of Power Transmission Engineering.
The International Fluid Power Exposition (IFPE) is a one-stop exhibition where you'll find just about everything to help maintain your company's leading edge in the ever-expanding fluid power industry.
Trade Show Season Kicks Off in March with Focus on Fluid Power and Power Transmission
The following special product news section examines the latest products and technologies in motion control.
Escape Rooms have been popular in recent years for their challenging game play, group participation and unique time constraints. Teams have X amount of time (typically 60 minutes) to solve puzzles, ponder riddles and dissect clues in order to escape a variety of themed games. Here's an escape room with a fluid power twist.
"For your safety, please keep your hands, arms and legs inside the vehicle at all times."
If you are involved in the acquisition of technology (whether your direct role is machine design, maintenance, purchasing or management), trade shows still provide one of the best ways to evaluate options, learn about the latest technology and find solutions to problems.
One show we might not talk about enough is Power-Gen International, one of the biggest U.S. trade shows in the energy industry you can attend that will be going on November 19-21 in New Orleans.
In this paper, the models for different power loss sources in transmissions from literature are applied and compared, which form the two methods - ISO 14179-2 and the joint model to estimate the power losses in a transmission. A 2-speed transmission in an electric vehicle is used as a case study to compare the two methods and validate them with experimental data.
The complete Industry News section from the February 2019 issue of Power Transmission Engineering.
In the process of applying industrial drive products, we occasionally are misled into believing that we are applying horsepower. The real driving force is not horsepower - it is torque. This paper is developed to impart a deeper understanding of torque, its relationship to horsepower, and the types of loads we most frequently encounter.
The complete Product News section from the February 2013 issue of Power Transmission Engineering.
Smart actuators bring big benefits to utility and other off-highway vehicles
Managing Editor Randy Stott explains the recent updates and improvements to the website.
Hydrostatic drive concept gives LinsiTrak flexibility and versatility.
The mechanical components of your drive system play a major role in overall system efficiency. Don't cut corners.
We're pleased to present the first-ever March issue of Power Transmission Engineering.
IFPE offers the right balance of technology and education.
A core part of what we do here is making sure that our readers â“ the people who design, buy and use mechanical power transmission products â“ know where to find the suppliers of technology they need.
You may have noticed that the magazine looks different this issue. The new look is part of an overall effort to refine our focus. We wanted to make clear to potential subscribers and advertisers how this magazine is different, why its content is important and where it fits in the marketplace.
Seal design engineers and end users are continually seeking improved sealing systems and materials. This paper describes the potential of a new thermoplastic polyurethane (TPU) material to deliver improvements in pressure, speed and temperature capability, which are presented as comparisons to proven industry standard materials. Performance is demonstrated by virtue of test bench results of seals made from MDI-, PPDI- and NDI-based materials.
The first trade show dedicated specifically to small and community wind took place in Detroit, Michigan November 3â“5. Denise Bode, American Wind Energy Association (AWEA) CEO, was pleased with the turnout for the event and the increasing potential for this segment of the wind energy market.
Wind is the talk of the town. It has become especially relevant to the power transmission community where bearings, gears, couplings, motors and gearboxes are providing the equipment for this thriving alternative energy industry. It comes as no surprise that the Windpower 2009 Conference and Exhibition, arriving in Chicago from May 4â“7, will be the largest gathering of wind energy professionals and technologies to date.
This paper is intended to enlarge the application range of radial cylindrical roller bearings by means of a more precise determination of thrust load capacity and more cost-effective design.
In looking for potential opportunities to reduce energy consumption via the drive system, a number of areas should be considered.
In the publishing business we thrive on new ideas. We employ creative people who are constantly coming up with new and better ways to serve our readers and website visitors.
Regardless of where you do business, when discussing, analyzing or worrying about âœThe Economyâ these days, youâ™re not thinking Main Street - youâ™re thinking global. With that stipulation, it is also accepted wisdom that quality products and sharp pencils are not enough to be and remain competitive. Accordingly, everyone is looking for an edge, an advantage, in order to beat back - or at least keep up with - the competition.
The complete Product News section from the June 2012 issue of Power Transmission Engineering.
Heaven help Mr. Deane were he around today. In our non-stop world of transportation & transport technology, for at least the past decade it is without question the electric car that has drawn most of the attention
He was out. Nine years ago, Ross Rivard left the coupling industry for the shimmering new world of luxury automotive components at Lacks Enterprises, where he was immediately enveloped by platinum trim systems and chrome composite wheels. It was glitz and glam and as sparkly clean as the fresh-fromthe-dealership cars his products were embellished onto.
One of the best things about being a journalist â” whether for example it be reporting on manufacturing, politics, show business, or anything else â” is being paid to âœgo to schoolâ and learning about any number of things that you were perhaps ignorant of at the outset.
End users and OEMs frequently specify "lubed-for-life" mounted bearings, thinking the lubed-for-life bearings will deliver the same life â” without lubrication â” as bearings that currently require periodic lubrication. The truth is it depends on many factors, and only a detailed review of the application and testing will provide a more accurate answer.
Latest news on products.
When trying to find a new bonding material dispense system, one manufacturer tested a series of pumps â” all of which leaked due to the abrasiveness of the bonding material. The manufacturer also had been attempting to manage shot size manually with their previous system, and was not able to keep dispense consistent. The company searched for a system that could accurately dispense programmed shot sizes while also eliminating the leaking issues they had experienced with previous pumps. Graco provided a Check-Mate pump with SmartWare software, and the manufacturer is now able to automatically dispense shots of bonding material as small as one ounce without leaks.
Action Challenge Introduces Students to Fluid Power Industry in the latest STEM educational effort from the National Fluid Power Association.
After getting positive feedback on changes made to the show last year, AWEA Wind Power is doubling down and taking their ongoing transformation even further.
Fluid Power, Motion Control and Power Transmission Industries Come Together in Las Vegas to Promote New Solutions.
The world is full-on automated. From our factories to our vehicles to our leisurely activities, the future is now and itâ™s nothing but algorithms, robotics and hands-free operation. It comes as no surprise that a 2016 Google search brings a fair amount of technology gone awry. The following examples donâ™t scare us (theyâ™re actually quite fascinating) but they probably should worry us a little bitâ¦
Latest news about upcoming products.
In recent years the estimation of gearbox power loss is attracting more interest â” especially in the wind turbine and automotive gearbox industry â” 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.
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 Asiaâ” particularly China, which now leads the world with 114 GW of installed capacityâ”the USA, Europe, and the rest of the world expect steady growth for the next couple of years as well (Fig. 1).
A wide variety of companies displayed mechanical power transmission and motion control technologies at Pack Expo, held in November in Chicago. The event, which is the largest packaging and processing trade show in North America, attracted more than 48,000 attendees, according to show owner and producer PMMI. The four-day event included 2,352 exhibiting companies, an increase of more than 19 percent from the previous show in 2012.
Weâ™ve recently completed a major redesign of the powertransmission. com website. I know what youâ™re thinking. Big deal, right? Websites are redesigned every day. Itâ™s not really news. Youâ™re right, of course. Weâ™re in the news business, and when companies send us press releases about their newly redesigned websites, our first instinct as editors is to respond the same way. So what. Big deal. Moving on.
A thermo-mechanical model of a splash lubricated one-stage gear unit is presented. This system corresponds to a first step towards the design of a hybrid vehicle gearbox that can operate up to 40,000 rpm on its primary shaft. The numerical model is based on the thermal network method and takes into account power losses due to teeth friction, rolling-elements bearings and oil churning. Some calculations underline that oil churning causes a high amount of power loss. A simple method to reduce this source of power losses is presented, and its influence on the gear unit efficiency and its thermal capacity is computed.
Latest information about upcoming products.
News about latest products
Fans, blowers and other funny loads are addressend, along with RMS Horsepower loading.
News Items About power density
1 40 mm Maxon Motor Offers High-Power Density (May 19, 2011)
Maxon’s new EC 40 is characterized by high quality materials and high performing specifications. The m...
2 Pittman 8540 Series Improves Power Density (January 18, 2012)
Pittman 8540 Series brush-commutated DC motors are designed using the latest advancements in materials and manufacturing technology. This...
3 Siemens Sinamics Drives Offer High Power Density in Smaller Footprint (February 3, 2016)
Siemens recently announced the availability of its Sinamics G120C drive in AA size, which replaces the previous G120C frame size A in pow...
4 Zero-Max CD Couplings Offer High Power Density (September 6, 2016)
The quest for smaller machine footprints continues as designers seek new ways to reduce machine size while increasing output. The Zero-Ma...