gear drive

Articles About gear drive


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Articles are sorted by RELEVANCE. Sort by Date.

1 A New Geometrically Adaptive Approach for Tooth Contact Analysis of Gear Drives (August 2015)

Tooth contact analysis (TCA) is an important tool directed to the determination of contact patterns, contact paths, and transmission errors in gear drives. In this work, a new general approach that is applicable to any kind of gear geometry is proposed.

2 Calculation of the Efficiency of Worm Gear Drives (June 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.

3 When a Good Gear Drive System Goes Bad (October 2012)

Even when the critical components of industrial power transmission gear drive systems are properly designed, specified and manufactured consistent with application requirements, performance problems can develop over time and failure may follow.

4 Product Focus: Gears and Gear Drives (February 2011)

In this special news section, the editors of Power Transmission Engineering have gathered the latest product news and information from the gears and gear drives sector.

5 Gears and Gear Drives Product Focus (February 2013)

Our product focus includes the latest technology in gears and gear drives from the leading manufacturers.

6 Gear Drive Selection Process for the Parcel Handling Industry (August 2011)

This article is designed to help describe the selection process of a reducer to be used in the parcel handling industry. It will go over the different applications for which gearboxes are used throughout parcel handling facilities such as UPS, FedEx and DHL.

7 The Fundamentals of Specifying and Selecting Gear Drives (December 2012)

Gear drives deliver power to industrial equipment such as bulk material conveyors, mixers, pumps and paper mills. The reliability that translates into greater uptime and profitability begins by specifying and selecting the proper drives for these critical applications.

8 Gear Drives Used in Centrifuge Applications (August 2010)

In order to make better purchasing decisions about centrifuge applications, one must understand the concept of centrifuges and the drives that operate this equipment.

9 Engineering Showcase - Gears and Gear Drives (September 2018)

Machinists Inc. is integrating the machinery, equipment and know-how of The Gear Works-Seattle Inc.

10 Driving Gears 2019 (September 2019)

Efficiency, power-loss reduction and enhanced performance are just a few examples of what the PT community wants from their gears and gear drives in 2019. Some companies are doubling down on service and assembly capabilities while other others are integrating components in an effort to increase flexibility and control.

11 Gear Expo is for Gear Buyers (September 2017)

Most of you who read this magazine have a close relationship with gears and gear drives. According to our surveys, 75% of you recommend, specify or buy them. It's a shame, then, that the majority of you will miss Gear Expo (Oct. 24-26 in Columbus, OH) this year.

12 An Open-And-Shut Case: Greases for Gear Applications (September 2016)

For the lubrication of open gear drives used in different industrial applications such as cement and coal mills, rotary furnaces, or where the sealing conditions are difficult, semi-fluid greases are often used in preference to fluid oils. For girth gear applications the greases are used with a splash or spray lubrication system. The selection of such greases influences pitting lifetime and the load-carrying capacity of the gears, as well as wear behavior

13 Rain or Shine (April 2008)

Brevini Power Transmission helps spectators enjoy stadium sights and sounds.

14 NORD Gear Offers Drive Solutions for Intelligent Brewing (September 2019)

Worm, bevel, and parallel shaft gear units were installed at two breweries to provide the necessary process control.

15 The Consistency Game (October 2018)

A Look at Gear & Gear Drive Lubrication Performance Improvements

16 Gearbox Innovation Evolves in Step with Expanding Servo Market (September 2018)

Approximately one quarter of all servo motors around the world require some type of gear reduction in their applications. From large satellite dishes to precision medical devices, gearboxes boost torque and reduce speed for servos in order for them to be sized more efficiently. While gearbox fundamentals haven't changed much over the past 20 years, their effectiveness has improved significantly, driven mostly by the need to accommodate advancements in servo technology.

17 Considering Energy-Efficient Motors: Don't Forget the Gearbox (February 2013)

The mechanical components of your drive system play a major role in overall system efficiency. Don't cut corners.

18 Gearbox Development for the Food and Beverage Processing Industry (September 2019)

How one gearbox manufacturer took an existing design and transformed it to meet the needs of this demanding environment.

19 Creature Comfort (February 2020)

Intelligent drive technology in the cowshed

20 Dynamic Behavior of Planetary Gears (June 2020)

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.

21 Six Keys to Sustainable Manufacturing (February 2009)

The federal government estimates that manufacturing uses about one third of the energy consumed in the U.S., so manufacturing companies can play an important role in building a sustainable future.

22 A Little Peace of Mind (June 2020)

Condition Monitoring Technology Evolves for Gear Drives, Gearmotors and Gearboxes. Here's a look at what some leading manufacturers are offering.

23 Romax Improves Reckon Drive Product Reliability with Drivetrain Structural Simulation Software (April 2020)

Durability requirements must be balanced with the need for lightweight and low-cost solutions which meet noise and vibration targets whilst also exhibiting excellent efficiency.

24 Dynamic Performance (April 2020)

PTE Examines Gearmotor and Gear Drive Technology

25 Stable and Streamlined (September 2018)

Gear drives focus on longevity, quality and customization.

26 Power Transmission vs. Wild (October 2009)

Typically, zoo safari rides consist of cramped trams that take guests five miles-per-hour past various exhibits. You might catch a bear sleeping, hear scripted, narrated fun facts or be somewhat entertained by eccentric tour guides, but there’s never much to look at except concession stands or souvenir shops.

27 AGMA in Full Support of Energy Initiative (February 2010)

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 anyone’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 agencies—U.S. Department of Energy (DOE)—and the private sector—some major manufacturers—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.

28 Pushing Forward with Belts and Chains (June 2018)

The technology continues to evolve in chain- and belt-driven systems

29 Theoretical and Experimental Study of the Frictional Losses of Radial Shaft Seals for Industrial Gearbox (June 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.

30 Airport Baggage Handling: Queue Conveyor Design from a Gearmotor Perspective (February 2011)

The primary driver of an airport baggage handling queue conveyor must be able to operate under increasingly demanding operating conditions, including frequent starting and stopping. The selection of the primary driver of the queue conveyor is dependent on multiple criteria, including dimensional requirements and durability characteristics.

31 How to Get the Most Realistic Efficiency Calculation for Gearboxes (April 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.

32 Effect of Assembly Errors in Back-to-Back Gear Efficiency Testing (December 2015)

As gear efficiency is improved in small steps, it is important to be able to distinguish actual improvements from scatter that can occur while testing. An FZG back-to-back gear test rig was used to investigate how the assembly and re-assembly of the same test setup affects the measurements. A spread in torque loss between one assembly and another of the same test setup were observed. Rig conditions also affected the spread in input torque. With knowledge of how the spread in torque loss varies due to assembly, test results could be distinguished between changes due to assembly and actual differences between tests.

33 Is Splash Lubrication Compatible with Efficient Gear Units for High-Speed Applications (October 2015)

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.

34 Two-stage Helical Bevel Gearing (February 2016)

Gearing is an essential component in conveyors. The material handling industry appears divided between those who favor high-end three-stage helical bevel gearboxes and those who rely on less expensive worm gearing. But there’s an often over-looked alternative, the two-stage helical bevel gearbox.

35 Total System Efficiency (February 2010)

Much of the industrial energy being consumed by systems is wasted through inefficiency. For this article, a system will be defined as the following components working together: electrical input power, variable frequency drives, induction motors, gearboxes and transmission elements (chains, belts, etc.).

36 Lightweight, Highly Efficient Drive System (February 2017)

This paper presents a joint project conducted by Ashwoods Electric Motors and Oerlikon Fairfield that uses planetary drives with an integrated electric motor. Current solutions used in production of off-highway vehicles rely upon large, heavy and inefficient brushed DC or induction motors, coupled to a planetary gearbox. This presents a number of challenges to the vehicle designers such as: limited vehicle range, limited space around the motor/drivetrain, and motor durability. The proposed integrated system utilizes an Oerlikon Fairfield Torque Hub, widely used in off-highway vehicles, and the Ashwoods first-to-market, interior permanent magnet motor. How these products are integrated, i.e. incorporating a brake solution, represents a market-changing product. Using interior permanent magnet (IPM) technology in the motor design means the motor can be up to 70% lighter, 70% smaller and 20% more efficient than traditional motors used in off-highway traction applications.

37 Determination of Load Distributions on Double Helical-Geared Planetary Gearboxes (June 2017)

Standardized calculation methods such as ISO 6336 and DIN 3990 already exist to determine the load distributions on gears inside a planetary gearbox, but by their very universal nature, these methods offer varying results depending on the gearbox design. Double helical gears, in particular, can benefit from more specific, complex algorithms to reach a maximum level of efficiency. Double helical gears interact with the rest of the gearbox differently than helical or spur gears, and thus benefit from different analytical models outside the standardized methods. The present research project describes the algorithm to determine the load distribution of planetary gearboxes with double helical gears.

38 Gear Design Effects on Performance of High-Speed Helical Geartrains as Used in Aerospace Drive Systems (March 2016)

The performance of high-speed helical geartrains is of particular importance for tiltrotor aircraft drive systems. These drive systems are used to provide speed reduction/torque multiplication from the gas turbine output shaft and provide the necessary offset between these parallel shafts in the aircraft. Four different design configurations have been tested in the NASA Glenn Research Center, High-Speed Helical Geartrain Test Facility. The design configurations included the current aircraft design, current design with isotropic superfinished gear surfaces, double-helical design (inward and outward pumping), increased pitch (finer teeth), and an increased helix angle. All designs were tested at multiple input shaft speeds (up to 15,000 rpm) and applied power (up to 5,000 hp). Also two lubrication, system-related, variables were tested: oil inlet temperature (160–250° F) and lubricating jet pressure (60–80 psig). Experimental data recorded from these tests included power loss of the helical system under study, the temperature increase of the lubricant from inlet to outlet of the drive system and fling-off temperatures (radially and axially). Also, all gear systems were tested with and without shrouds around the gears.

39 Engineering Showcase - Gear Drives (April 2020)

Our special advertising section takes a look at leading suppliers in the gear drives space.

40 Engineering Showcase - Gears and Gear Drives (September 2019)

See our special advertising section focused on gears and gear drives from the September 2019 issue of Power Transmission Engineering.

41 A New Standardizable Calculation Method to Predict the Efficiency of Worm Gear Drives (March 2018)

In this work a physically based method for the tribological investigation of worm gears is presented.

42 Gear, Gear Drive and Power Transmission Component Suppliers at Gear Expo 2013 (August 2013)

Map and listings of the exhibitors providing power transmission components.

43 Gear, Gear Drive and Power Transmission Component Suppliers at Gear Expo 2015 (September 2015)

Gear, Gear Drive and Power Transmission Component Suppliers at Gear Expo 2015

44 Gear, Gear Drive and Power Transmission Component Suppliers at Gear Expo 2017 (September 2017)

Our listings of the booths at Gear Expo 2017 that are most relevant to PTE readers.

45 Documentation of Gearbox Reliability - An Upcoming Demand (June 2019)

The proof of the reliability of a gear drive is now an additional requirement. In Europe, the acceptance authorities for wind turbines are requesting a system reliability proof from gearbox manufacturers. The AGMA committee reviewing the AGMA 6006 standard for wind turbines is considering adding a chapter about design for reliability. However, reliability considerations are not new; NASA, for example, was in the 1980s using reliability concepts for gear drives.

46 Direct Drive Technology and its Impact on the Gearmotor Business (December 2009)

An exploration of direct drive motor trends and examples of design uses for direct drives as replacements for gear drives or belt drives.

47 Gear Expo 2017 Booth Previews (September 2017)

Highlights from some of the gear, gear drive, power transmission component, software, materials and related exhibitors at Gear Expo 2017.

48 Your Search Starts Here (December 2018)

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.

49 Product News (June 2018)

Elastic housing deformation by MESYS, plus new motors, actuators, gear drives and more.

50 Seeking Suppliers (October 2013)

Last month's Gear Expo in Indianapolis provided a great opportunity to meet potential suppliers of mechanical power transmission components -- mostly gears and gear drives, of course, but also a smattering of suppliers of bearings and motors as well.

51 It Doesn't End Here (December 2016)

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.

52 Chasing Ubiquity (June 2013)

Power Transmission Engineering is the magazine of mechanical components. When you think of gear drives, bearings, motors, couplings, clutches, brakes and similar products, we want you to think of us. But achieving such front-of-mind presence is one of the most difficult goals in publishing...

53 Engineering Smart (February 2016)

Our theme for 2016 is “Engineering Smart.” Our goal as a publication is to help you engineer better systems, taking advantage of the latest in technology to create mechanical systems that last longer, save energy, cost less and increase performance. The way we do that is by bringing you the best information possible on the design and engineering of gears, gear drives, bearings, motors, couplings and related power transmission components and systems.

54 Core Subjects (October 2019)

magazine. Instead of focusing on a specific industry, we focus on specific subject: namely, the mechanical power transmission components that drive many different types of machinery. So we find ourselves continuously writing about the same things: gears, bearings, motors, gear drives and so on. But this is a good thing.

55 Efficiency of Design (February 2018)

Energy efficiency is for more than just motors. Here are some mechatronics companies making sure you get more bang for your buck when it comes to your power bill.

56 Mechanical Motion in Tight Spaces (March 2018)

Framo Morat and Dunkermotoren Produce Drive Systems for Automatic Guided Vehicles.

57 The Development of Worm Drives (February 2018)

A worm drive is a geared power transmission device in which a worm meshes with a worm gear to transmit power between two non-intersecting shafts that are oriented at a right angle. The worm drive has been an active and challenging topic of technological study since Leonardo da Vinci (1452-1519).

58 Custom Machine and Tool Bolsters Accuracy and Efficiency for Vande Berg Scales (June 2018)

If you can find that magic bullet that will reduce the machining process, you can achieve meaningful efficiency gains. It is imperative that check-weighers or in-motion weighing systems remain both accurate and efficient while attaining a consistently smooth operation because they dynamically weigh products as they move across the belt.

59 Industry News (June 2018)

The complete Industry News section from the June 2018 issue of Power Transmission Engineering.

60 Product News (February 2018)

The latest mechanical power transmission products from Nord Drivesystems, Gearing Solutions, Ogura Industrial, Stafford Manufacturing, Rexnord, Portescap, Steinmeyer, Intellidrives, J.W. Winco and Zero-Max.

61 Baldor Motor Basics Part 11 (March 2018)

Explosion-Proof Motors in Division 2 Areas and DC Drive Fundamentals

62 Fluid Couplings vs VFDs for High Inertia Rotating Driven Loads (September 2017)

As the old adage goes, "There is more than one way to skin a cat." In the early stages of any project, system designers are faced with choices; whether they are designing a new application or retrofitting an old one, they need to determine what is the most efficient, economical and practical way of completing the task at hand. Though there are usually at least two viable means to accomplish the task, the first step is always to review and weigh the merits of each option.

63 Industry News (June 2017)

The complete Industry News section from the June 2017 issue of Power Transmission Engineering.

64 Baldor Basics: Understanding Torque (April 2017)

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.

65 Why Direct Drive (March 2017)

In today's highly competitive world, the better someone understands the advantages and benefits of direct drive technology, then the more they will have an advantage in machine building, giving them an edge over their competition.

66 How to Prevent Pulley Slippage (February 2017)

I'm not able to get a good connection between the pulley and shaft in my drive assembly. Could you explain the various ways of connecting a pulley to a shaft to prevent the pulley from slipping?

67 Product News (August 2017)

The latest tools and techologies in power transmission, motion control and related components.

68 Purchasing Efficiency (September 2018)

You may have noticed a lot of merger and acquisition activity lately in the power transmission industry. What does it mean?

69 Product News (October 2017)

New HMI from Siemens, ITAMCO ramps up additive manufacturing, LM76 introduces new linear bearings, plus other new products from around the industry.

70 Industry News (September 2017)

The complete Industry News section from the September 2017 issue of Power Transmission Engineering.

71 Eats, Drinks and Treats (September 2017)

Process Expo and Pack Expo Highlight the Latest Technology for Food & Beverage Applications.

72 Familiar Goals, New Solutions (October 2017)

Gearmotor manufacturers find new ways to push the envelope. (With Sidebar on new alternative to planetary gearboxes)

73 Hannover Messe USA - What we Learned (October 2018)

IMTS 2018 had its fair share of machine tools, 3D printers and advanced robotics. Meanwhile, the East Hall — home to Hannover Messe USA — took a more systematic approach, highlighting the smart components and techniques that will be integral in developing the digital factory of the future.

74 Saving Money with High-Efficiency Gearmotors (October 2019)

Standing in a factory or a warehouse, you're bound to notice machinery, whether it's a conveyor system that winds across the floor or large fans that hang from the ceiling. You may even notice automated guided vehicles or autonomous mobile robots carrying parts, driving themselves from one section of the building to another. These machines are good candidates for using high-efficiency gearmotors, especially if they're expected to run for long stretches at a time. If they aren't using high-efficiency gearmotors, then they may be costing more money than they should.

75 Industry News (August 2019)

The complete Industry News section from the August 2019 issue of Power Transmission Engineering.

76 Product News (August 2019)

The complete Product News section from the August 2019 issue of Power Transmission Engineering.

77 Industry News (June 2019)

The complete Industry News section from the June 2019 issue of Power Transmission Engineering.

78 Validation Approach of PM Gears for e-Drive Applications (October 2019)

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.

79 In the News: Linear Motion (December 2019)

The following article is a round-up of the latest linear motion product and industry news items featured at www.powertransmission.com and on social media.

80 Better Energy-Efficient Flow Rate Regulation (December 2016)

Implementing a power-on-demand concept based on variable speed drives allows for energy saving in any application that involves pumps or hydraulic systems. And when used in combination with an intelligent wiring and communication system, relevant machine data can also be easily recorded - the basis for comprehensive power management.

81 Centralized vs. Decentralized: Choosing the Right Type of Motor Control System (August 2020)

Are you looking for one simple formula to help you choose between centralized and decentralized motor control? Unfortunately, such a formula does not exist. However, evaluating the overall size of the system, comparing labor and material costs, and maintaining flexibility can help guide engineers in the right direction.

82 A Mechatronic State of Mind (February 2020)

Welcome to the Age of Information, where flexible, intelligent drive systems separate the haves from the have nots

83 Advanced Belt Drive Systems (June 2019)

Enhancing Safety, Quality, Delivery and Cost.

84 Chain & Sprocket Systems and Maintenance (June 2019)

Chain and sprocket drives of one form or another have been driving machines and conveying materials for over a thousand years. The chain manufacturing industry has developed numerous types and sizes of drive chains. Although it is a mature form of power transmission, there are still many industrial applications for which drive chain is suited. It is economical, resistant to shock loads, easy to install, has the ability to transmit high torque, operates in hostile environments, and is efficient. Chain and sprocket drives are highly engineered and manufactured within close tolerances.

85 Smashing the Efficiency Barrier (October 2018)

A Practical Comparison of Planetary and Orbitless Gear-Heads.

86 Industry News (September 2018)

The complete Industry News section from the September 2018 issue of Power Transmission Engineering.

87 Monitoring the Health of Plant Machinery (September 2018)

Health monitoring or condition monitoring has been used for many years on machines and in plants where the cost of an outage is high. It allows failures to be anticipated and maintenance or repairs to be scheduled for the least loss of production, as well as avoiding unnecessary periodic maintenance.

88 The Future of E-Mobility (October 2018)

Schaeffler Touts System Solutions and Electrification Advancements at Detroit Symposium

89 Product News (February 2019)

The complete Product News section from the February 2019 issue of Power Transmission Engineering.

90 Industry News (April 2019)

The complete Industry News section from the April 2019 issue of Power Transmission Engineering.

91 In Motion (March 2019)

The following special product news section examines the latest products and technologies in motion control.

92 Product News (March 2019)

The complete Product News section from the March 2019 issue of Power Transmission Engineering.

93 Product News (September 2018)

The complete Product News section from the September 2018 issue of Power Transmission Engineering.

94 Product News (December 2013)

The complete Product News section from the December 2013 issue of Power Transmission Engineering.

95 Product News (December 2011)

The complete Product News section from the December 2011 issue of Power Transmission Engineering.

96 Electric Automation Trends Discovered at SPS-IPC Drives 2011 (December 2011)

SPS-IPC Drives 2011, which took place in Nuremburg, Germany in November, covered all components down to complete systems and integrated solutions in the electric automation industry.

97 Motoring Ahead (August 2011)

Synchronous motors controlled by variable speed drives are bringing higher efficiencies to industrial applications.

98 Soft Starters vs. Variable Speed - Or Both (June 2011)

Given that many different hydraulic systems recommend the use of either frequency converters or cyclic control (soft starter technologies), the question must be asked - Which one of these solutions is the most cost-effective in reducing energy consumption and providing the most satisfactory payback time?

99 The Green Spin: Baldor Redefines Cooling Tower Performance (February 2011)

The Baldor Reliance RPM AC Cooling Tower Direct Drive Motor is designed exclusively for the cooling tower industry. This motor combines the technologies of the power-dense, laminated frame RPM AC motor with high performance, permanent magnet salient pole rotor designs.

100 Product News (February 2012)

The complete Product News section from the February 2012 issue of Power Transmission Engineering.

101 Compact Loaders for Compact Spaces (February 2012)

Compact loaders are employed where large machines have no access or are over dimensioned. New hydrostatic drives from ZF meet the demanding needs of this market.

102 Nervy Enterprise and Edgy Engineering: A Cant-Miss Mix (June 2012)

Fairchild International, a U.S.-based manufacturer of underground mining equipment, has produced battery-powered DC scoops since the early 1980s. With 17 different models available, Fairchild offers a size to fit any coal mining operation, making it the leader in the industry.

103 Bearing Protection Needed if Inverter-Duty Motors Are to Live up to their Name (August 2012)

All major manufacturers of 3-phase AC induction motors offer "inverter-duty" or "inverter-ready” models, but while these motors have inverter-rated insulation to protect the windings, the bearings--their most vulnerable parts--are too often ignored.

104 Product News (June 2012)

The complete Product News section from the June 2012 issue of Power Transmission Engineering.

105 University Improves Sustainability of HVAC Motors in Platinum LEED Building (April 2012)

A new preventive maintenance program at a leading New England Ivy League university demonstrates how the push for more sustainable "green" building management has led to a growing awareness of a chronic, widespread problem with HVAC motors—electrical bearing damage and failure.

106 Optimizing Drive Systems for Energy Savings (February 2012)

In looking for potential opportunities to reduce energy consumption via the drive system, a number of areas should be considered.

107 Drive-Based Integrated Safety (February 2011)

While safety functions have been integrated into drives packages for some years now, the current trends are very exciting, from many angles. Today, a full complement of safety functions can be implemented at the front-end of a system design on all types of production machines, including printing, packaging, converting, materials handling and other equipment used throughout American industry.

108 A Present State and Future Vision of Motor Drive Technology (December 2010)

One of the driving forces behind the industrial revolution was the invention—more than a century ago—of the electric motor. Its widespread use for all kinds of mechanical motion has made life simpler and has ultimately aided the advancement of humankind. And the advent of the inverter that facilitated speed and torque control of AC motors has propelled the use of electric motors to new realms that were inconceivable just a mere 30 years ago. Advances in power semiconductors—along with digital controls—have enabled realization of motor drives that are robust and can control position and speed to a high degree of precision. The use of AC motor drives has also resulted in energy savings and improved system efficiency. This paper reviews the development and application of inverter technology to AC motor drives and presents a vision for motor drive technology.

109 Power With Precision (February 2009)

Can direct drive technology improve your bottom line? Manufacturers relying upon drive systems in their production process have long sought ways to improve gearbox efficiency. While a gearbox-driven system has been the mainstay for manufacturers, it has also been, among other things, the source of frequent breakdowns, expensive line stoppages and increasingly costly maintenance.

110 Facing the Challenges of the Current Hybrid Electric Drivetrain (April 2009)

Presented is a high-phase, order-induction motor drive for use in a series hybrid architecture. This solution overcomes numerous compromises in current hybrid powertrain designs. Notably, it allows for a vehicle that is competitive in terms of performance and cost.

111 Product News (October 2008)

The complete product news section from the October 2008 issue of Power Transmission Engineering (PTE).

112 Mold Machining Center Maintains Accuracy (June 2008)

Entrust enlists Advanced Machine & Engineering for 7-axis, 2-spindle performance.

113 Industry News (February 2008)

The complete Industry News section from the February 2008 issue of Power Transmission Engineering

114 Historic Danish Theatre Gets a Facelift (April 2009)

The Royal Danish Theatre has occupied the heart of Copenhagen for centuries and recently upgraded to a new control system featuring Sprint Electric DC drives to extend the lives of the existing motors, keeping replacement costs down. The Swedish stage design and technology company Visual Act retained most of the original motors and mechanics while providing a much-needed facelift to the stage.

115 Product News (June 2009)

The complete product news section from the June 2009 issue of Power Transmission Engineering.

116 Soft Drink Solutions (December 2009)

Servo system from Bosch-Rexroth helps create more efficient beverage palletizer.

117 Honing a Competitive Advantage (December 2009)

Sunnen grows product portfolio with motion control solution from Siemens.

118 Analyzing Synchronous Belt Failure (October 2009)

If you’re replacing your belts more than once per year, it’s time to analyze your drive. From belt crimping damage to high belt installation tension to sprocket misalignment and adverse environmental conditions, this guide walks you through how to identify the reasons behind premature failure and makes recommendations on corrective and preventive measures.

119 Belt Drive Offers High-Precision Alternative (August 2009)

Bosch Rexroth assists Bell-Everman with linear actuator development.

120 Industry News (August 2012)

The complete Industry News section from the August 2012 issue of Power Transmission Engineering.

121 Getting Creative (October 2012)

Beverage industry conveyor pours on advantages in distribution center. Case study describes the new conveying systems at Motion Industries Canada.

122 Product News (June 2015)

News about latest Products in the Industry

123 Transmissions in Transition (June 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

124 Product News (March 2015)

New products within the Industry

125 Variable Speed Pump Drives For Industrial Machinery - System Considerations (February 2015)

The changing landscape of hydraulic drives is leading many fluid power specialists to quickly adapt to using variable speed pump drives. Optimum utilization of these drives requires, in many cases, additional system design considerations.

126 The Applications of Bevel Gears (December 2014)

EDITORS’ NOTE: “The Applications of Bevel Gears” is the excerpted third chapter of Dr. Hermann Stadtfeld’s latest book — Gleason Bevel Gear Technology (The Gleason Works, Rochester, New York, USA; All rights reserved. 2014; ISBN 978-0-615-96492-8.), which appears here unabridged through the kind graces of Dr. Stadtfeld and Gleason Corp. Future installments will appear exclusively in Power Transmission Engineering and Gear Technology magazine over the next 12 to 18 months.

127 When it Comes to Mining, Bigger is Best (June 2015)

One of the key challenges in the mining industry today is maintaining throughput in the face of ore grade quality that has declined by 40 percent in the last decade.

128 Pushing the Envelope(s) (September 2015)

With advances in modern technology reducing demand for envelopes, manufacturers are finding it increasingly hard to justify investment.

129 Product News (June 2016)

Latest news on products.

130 High Gear Ratio Epicyclic Drives (June 2016)

Referencing a June 2014 Article, “High Gear Ratio Epicyclic Drives Analysis,” by Dr. Alex Kapelevich: I have designed a small compound epicyclic gearbox with common planets. Sun = 10 teeth Planet = 14 teeth Ring Gear stationary = 38 teeth Ring gear output = 41 teeth profile shifted onto a 38 tooth pitch diameter. Carriers are simply cages for the planet alignment and location. According to your article, and according to my calculations and the prototype I have built, my inputto- output ratio is a reduction of 65.6:1. I am using a ~ VG1 viscosity grease and Nylatron materials for the gears and carriers.

131 Stop the Presses! (Spring 2007)

Today’s newspaper advertisers demand vibrant, attractive color printing, and newspaper printers are constantly looking for methods to improve printing processes to meet these demands. When it comes to improving the printing process, the key component is to choose the right printing press.

132 Product News (February 2016)

Latest information about upcoming products.

133 Chains and Belts Play to Their Strengths (December 2015)

As with just about everything else in the manufacturing world — and all which that universe entails — it depends. After all, that’s why the art of manufacturing is a process — not a one-system-fits-all discipline. Yes, once that process has been properly designed and correctly implemented for a given manufacturing production need, it may well run like the astest, smoothest cookie-cutter-type operation ever devised.

134 Pre-Tension Thrust Bearings (December 2014)

What is the recommended method of gripping a spinning shaft (with up to 130 hp of rotational energy) to install pre-tension thrust bearings and conventional thrust bearings (load = hundreds of pounds) when the shaft cannot have any high points because it must pass through an area of tight clearances to assemble? Will snap rings still withstand the harsh vibration of this environment?

135 Product News (October 2014)

News about new Products in the industry.

136 Motion, Drive and Automation at Hannover Messe 2013 (February 2013)

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

137 Industry News (August 2013)

The complete Industry News section from the August 2013 issue of Power Transmission Engineering.

138 Traversing Steep Slopes (February 2013)

Hydrostatic drive concept gives LinsiTrak flexibility and versatility.

139 Designing Drive Systems for Low-Web-Speed Applications (December 2012)

This paper will look at the solutions that current drive and motor technology can offer in not only improving tension control but also solving several other issues that are inherent to systems with high ratio gearing.

140 High-Frequency, GaN Diode-Free Motor Drive Inverter with Pure Sine Wave Output (October 2012)

This article presents the first kW-Class, 3-phase GaN-based inverter. Hard-switched at 100-kHz PWM, its heart is a 6-in-1 power module with 600-V GaN power HEMTs, achieving a new efficiency of 98.5%, a more than 2% improvement.

141 Musical Gearboxes (October 2013)

Dave Soma, the mechanical supervisor at Leland Olds Station, a coal-fired power plant near Stanton, North Dakota, says he and his maintenance team care deeply about keeping the plant running and providing people electricity, especially in the dead of winter.

142 Drive and Motor Basics (October 2013)

A discussion of the basics in DC drives, DC motors, AC drives, AC motors and synchronous motors.

143 The Automated Parking Garage (September 2014)

ContiTech and Wöhr Team up for Unique Residential Solution.

144 Bosch Rexroth Powers Coal-Handling Equipment with Hydraulic Direct Drive (March 2014)

EECV in Rotterdam, the Netherlands, keeps on expanding and improving. In 2013 their transhipment of coal increased and they installed a new bucket wheel reclaimer with a capacity of 3,500 tons per hour. They chose a direct-drive system from Bosch Rexroth for this big bucket wheel. The drive system consists of a Hägglunds MB 1600 motor and a DUe drive unit.

145 How to Spec a Mill Gear (February 2014)

This paper outlines the design considerations that go into construction of a drive system in order to explain the importance of specific data, why it is required, and where design freedom is necessary. Apart from loads and speeds, interface dimensions and site specific conditions are also needed. Deciding up front which gear rating practice to select can affect the torque capacity of the drive train by ~15%.

146 The Workhorse of Industry: The Induction Motor (December 2013)

A brief overview of the induction motor, including the basics of construction, performance and variable speed drives.

147 Timing Belts and Pulleys - Operations (December 2016)

Synchronous drives are especially well-suited for low-speed, high-torque applications. Their positive driving nature prevents potential slippage associated with V-belt drives, and even allows significantly greater torque carrying capability. Small pitch synchronous drives operating at speeds of 50 ft/min (0.25 m/s) or less are considered to be low-speed. Care should be taken in the drive selection process as stall and peak torques can sometimes be very high. While intermittent peak torques can often be carried by synchronous drives without special considerations, high cyclic peak torque loading should be carefully reviewed.

News Items About gear drive

1 Zero-Max Gear Drives Provide Directional Motion Change (December 14, 2011)
Motion system designers looking for a smooth operating, quiet right angle gear drive might consider Zero-Max Crown gear drives. They feat...

2 Rexnord Offers New Options for Falk Gear Drives (March 8, 2012)
Rexnord Corporation announces it is now offering an inching drive option for the Falk V-Class gear drive...

3 SDP Helical Gear Drives Offer Feature Base or Panel Mount Design (August 19, 2011)
A new series of right angle helical gear drives from Stock Drive Products (SDP), an ISO 9001:2000 registered manufacturer, feature b...

4 Gear Drive Suitable for Printing, Packaging and Textile Machinery (April 20, 2011)
A new series of hollow-shaft right angle helical gear drives from Sterling Instrument, an ISO 9001:2000+AS9100B registered manufacturer, ...

5 Crown Gear Drives Designed for Full Range of Applications (March 12, 2010)
Zero-Max Crown Gear drives provide directional motion change in all types of power transmission systems. They are right angle gear drives...

6 Timken Opens State-of-the-Art Gear Drive Manufacturing Facility in Houston (April 24, 2015)
The Timken Company recently announced the opening of a new, 27,000-square-foot  gear drive manufacturing facility in Houston, TX. An...

7 Boston Gear Expands Stainless Steel Gear Drives (October 7, 2013)
A new line of Boston Gear stainless steel, right angle helical bevel gear drives is now available with output torque up to 7.700 lb.in. (...

8 AGMA Releases Publication on Lubrication of Industrial Gear Drives (January 20, 2020)
The AGMA Technical Division recently announced the release of AGMA ISO 18792-A19, Lubrication of industrial gear drives. Gear lubric...

9 Nord Gear Assembles Industrial Gear Drives in Wisconsin (August 16, 2016)
Nord Gear Corporation is now assembling its line of Maxxdrive large industrial gear drives at the Waunakee, Wisconsin plant. With a build...

10 Zero-Max Right Angle Gear Drives Ensure Lifetime Lubrication (May 2, 2017)
Lifetime lubrication in Zero-Max “Crown” gear drives assures motion system designers of a smooth operating, quiet right angle...

11 Martin Sprocket & Gear Compiles Gear Drive Troubleshooting Tips (April 11, 2016)
Martin Sprocket & Gear, Inc. has compiled some quick troubleshooting tips with some common causes and solutions for gear drive probl...

12 alpha gear drives Introduces New Gearhead (August 7, 2007)
The in line basic precision alphira product from alpha gear is packaged in a lightweight aluminum case and offers power-dense and mainten...

13 New Gear Drive System from ASI Technologies (April 12, 2005)
The MK400 Series transaxle from ASI Technologies combines the precision of a single piece casting, which can improve the accuracy of gear...

14 IMS Unveils Low Noise Planetary Gear Drives (February 13, 2008)
New Product Release IMS GEAR Planetary Gears Inc has recently completed the development and introduction of a new line of low noise ge...

15 Bonfiglioli and Schaeffler Collaborate on Wind Turbine Gear Drives (July 30, 2019)
A compact Industry 4.0 solution package for wind turbine azimuth drives is the result of a long-term development partnership between Bo...

16 Mitrpak Gear Drives Meet Indexing Requirements (November 9, 2011)
A full line of right angle gearboxes that are designed for conveying, manufacturing, packaging, and process applications that require pre...

17 Zero-Max Offers Right Angle Gear Drives (August 14, 2014)
Lubricated for life with Beacon 325 premium grade grease, Zero-Max Crown drives feature heat treated AGMA Class 10 spiral bevel gears. Th...

18 Zero-Max Offers IP65 Rated Crown Right Angle Gear Drives (June 26, 2020)
Tested and certified by an independent laboratory, the IP65 Rated models feature a nickel plated housing for corrosion protection and are...