Variable Pitch Linear Drives

Articles About Variable Pitch Linear Drives


Articles are sorted by RELEVANCE. Sort by Date.

1 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.

2 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.

3 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.

4 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.

5 Product News (June 2012)

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

6 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.

7 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.

8 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.

9 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?

10 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.

11 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.

12 Motoring Ahead (August 2011)

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

13 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.

14 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.

15 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

16 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.

17 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.

18 Product News (June 2016)

Latest news on products.

19 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.

20 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.

21 Product News (February 2016)

Latest information about upcoming products.

22 Eats, Drinks and Treats (September 2017)

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

23 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.

24 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.

25 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.

26 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?

27 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.

28 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.

29 Product News (June 2015)

News about latest Products in the Industry

30 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.

31 The Automated Parking Garage (September 2014)

ContiTech and Wöhr Team up for Unique Residential Solution.

32 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%.

33 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.

34 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.

35 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.

36 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.

37 Pushing the Envelope(s) (September 2015)

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

38 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.

39 Familiar Goals, New Solutions (October 2017)

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

40 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.

41 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.

42 Industry News (August 2019)

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

43 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.

44 Industry News (June 2019)

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

45 Advanced Belt Drive Systems (June 2019)

Enhancing Safety, Quality, Delivery and Cost.

46 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.

47 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.

48 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.

49 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.

50 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.

51 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.

52 Dynamic Performance (April 2020)

PTE Examines Gearmotor and Gear Drive Technology

53 Creature Comfort (February 2020)

Intelligent drive technology in the cowshed

54 In Motion (March 2019)

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

55 Product News (March 2019)

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

56 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.

57 Pushing Forward with Belts and Chains (June 2018)

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

58 Baldor Motor Basics Part 11 (March 2018)

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

59 Mechanical Motion in Tight Spaces (March 2018)

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

60 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).

61 Product News (December 2013)

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

62 Product News (September 2018)

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

63 Smashing the Efficiency Barrier (October 2018)

A Practical Comparison of Planetary and Orbitless Gear-Heads.

64 Product News (February 2019)

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

65 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.

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

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

67 Stable and Streamlined (September 2018)

Gear drives focus on longevity, quality and customization.

68 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.

69 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.

70 Product News (April 2015)

Latest Products

71 Linear Motors (October 2016)

When the need arises for linear motion or positioning, there are many choices. One can use an Acme screw, ball screw, rack & pinion, or belts. The cost of a linear motor solution is generally greater than a mechanical linear product, but when one needs highly accurate, repeatable, high-speed motion, then the answer may be a linear motor.

72 INDUSTRY NEWS (March 2015)

News From the Industry

73 Industry News (December 2014)

News from around the industry.

74 Product News (December 2014)

News from the industry about new products.

75 Product News (March 2017)

The complete Product News section from the March 2017 issue of Power Transmission Engineering.

76 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.

77 The ABCs of Linear Motion Rolling Guides (December 2018)

Improving System Performance One Application at a Time. PTE recently caught up with IKO, Rollon and THK to breakdown the basics in linear motion rolling guides.

78 Introducing the Ball Screw (December 2018)

The Swiss Army Knife of PT Components.

79 Linear Bearing CAD Models and More On the Fly (April 2018)

Here's what one supplier is doing to take advantage of the mobile phone in your pocket.

80 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.

81 CNC System Upgrades (December 2017)

Automated production of large objects such as auto body prototypes, boat hulls and surfboards traditionally requires computerized numerical control (CNC) systems costing nearly a million dollars. Thomson Cuts Costs and Production Time for Autoscale Inc.

82 Inexpensive Methods to Measure the Performance Characteristics of a Linear Motion Device (December 2013)

This article describes a series of tests that can be performed by the average user, with little experience, and without sophisticated measuring instruments, to quickly determine the most important performance characteristics of linear motion systems.

83 Ball Screws Revisited - Ask the Expert (February 2013)

A reader asks for clarification on last issue's Ask the Expert column about ball screw sizing.

84 Diametral Pitch Calculation (April 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?

85 Determining Diametral Pitch, Center Distance (October 2016)

I need help determining the diametral pitch needed to achieve the closest center-to-center distance for 2 spur gears. The 1st gear is a 34-tooth and the 2nd gear is a 28-tooth. The center-to-center distance between the gears needs to be as close to 2 1/8" as possible.

86 Cost-Effective, High-Performing Motors without Neodymium Magnets - Part II (December 2019)

In Part I we explored various motor technologies used today for industrial and traction motor design. Here in Part II we will explore another motor option: reluctance motors.

87 Chasing the Dream (April 2013)

Over the past several weeks, I've had quite an interesting back-and-forth e-mail conversation with John Pellegrino, an engineer, inventor and dreamer whose letter appears on page 8.

88 Am I Wasting My Time (April 2013)

Reader John Pellegrino looks for advice on his pursuit of a positively engaged continuously variable transmission.

89 Motion System Management (August 2008)

Companies focus on customization and quality in linear motion

90 Oscillation Welding Protects Pipelines (April 2010)

Ball screw assemblies are key to this patent-pending oilfield corrosion prevention solution.

91 Selecting and Sizing Ball Screw Drives (October 2012)

The ball screw drive is an assembly that converts rotary motion to linear motion and vice versa. The ball screw drive consists of a ball screw and a ball nut with recirculating ball bearings...

92 Smart Actuators for Off-Highway (February 2013)

Smart actuators bring big benefits to utility and other off-highway vehicles

93 Best Practices for Selecting and Sizing Guide Wheels (October 2011)

How to select a guide wheel with the properties best-suited for a given application to create a system that reduces design costs and engineering changes, and lowers warranty, assembly, installation and mounting costs.

94 Product News (October 2010)

The complete Product News section from the October 2010 issue of Power Transmission Engineering.

95 Linear Motion Q&A: Customized Machinery Built with Off-the-Shelf Components (April 2010)

This Q&A session with various experts at Thomson Linear Systems covers linear slides & stages, clutches & brakes, bearings and actuators.

96 Realizing the High Precision Load Handling Benefits of Rodless Electromechanical Actuators (February 2019)

Electromechanical rodless linear actuators can offer better load handling in smaller spaces than rod-style actuators, but realizing those benefits requires careful attention at the specification level. Whether you are replacing a failed actuator, looking for better performance or building a new application from the ground up, success depends on how precisely you specify application requirements.

97 Reduce Your Linear Motion Assemblies to a Single Component with Motorized Lead Screw Actuators (December 2019)

When it comes to specifying linear motion within a machine, system designers have many options from which to choose. Making the right choice can impact the ease of installation, footprint and cost of operation.

98 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.

99 Getting Creative (October 2012)

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

100 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.

101 Product News (December 2011)

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

102 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.

103 The Ikona Clutch and Differential (October 2008)

This paper describes two devices—a clutch and a differential— which are based on the Ikona continuously variable transmission (CVT).

104 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.

105 Industry News (August 2013)

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

106 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.

107 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.

108 Traversing Steep Slopes (February 2013)

Hydrostatic drive concept gives LinsiTrak flexibility and versatility.

109 Gears and Gear Drives Product Focus (February 2013)

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

110 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.

111 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.

112 Mold Machining Center Maintains Accuracy (June 2008)

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

113 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.

114 Industry News (February 2008)

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

115 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.

116 Precision Manufacturing and the Digitalization of Linear Motion Technology (June 2020)

Digitalization is increasingly transforming mechanical engineering and manufacturing technologies, bringing with it not only unparalleled control and flexibility over production systems but so much more.

117 Product News (June 2009)

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

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 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.

120 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.

121 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.).

122 Soft Drink Solutions (December 2009)

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

123 Honing a Competitive Advantage (December 2009)

Sunnen grows product portfolio with motion control solution from Siemens.

124 Drive and Motor Basics (October 2013)

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