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1 General Modeling Method of Power Losses in Transmission with Parameter Identification (October 2019)

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.

2 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.

3 MPT Expo 2019 Booth Previews (September 2019)

MPT Expo takes place October 15-17 at TCF CENTER (formerly the Cobo Center) in Detroit. Here are booth previews of some of the exhibitors most relevant to buyers of mechanical power transmission components.

4 Using Couplings to Reduce Downtime (August 2019)

Downtime, downtime, downtime. When it's planned, it's bearable. When it's not, it's not. To maintain machinery, planned downtime is necessary. To fix broken equipment, unplanned downtime is excruciating, especially when your factory is running closer and closer to full capacity.

5 All the Small Things (August 2019)

Packaging and material handling applications are reaping the benefits of smaller, smarter and more efficient components.

6 Industry News (August 2019)

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

7 Engineering Showcase - Couplings (August 2019)

Special advertising section focused on couplings.

8 Industry News (June 2019)

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

9 Industry News (April 2019)

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

10 Product News (April 2019)

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

11 A New Test Rig to Study Rolling Element Bearing Thermomechanical Behavior (April 2019)

Rolling element bearings are widely used in mechanical transmission to reduce friction between two rotating parts. With the further development of the electrical motor in mechanical industry, REBs operate more and more at high rotational speed. For these applications, REBs power losses can be predominant in mechanical transmissions.

12 Engineering Showcase - April 2019 (April 2019)

Special advertising section with a focus on bearings.

13 Industry News (March 2019)

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

14 Optimization of Power Density by Local Gear Failure Modeling (March 2019)

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.

15 Systematic Improvement (March 2019)

With AGVs, a primary bottleneck on productivity is battery life. But when looking at an AGV as a full system, there are plenty of ways this bottleneck can be widened.

16 Efficient Layout Process of Cylindrical Gears with Manufacturing Constraints (March 2019)

Cylindrical gear design can be divided into three steps. In the first step, rough gear pair dimensions such as center distance and face width are being estimated. Center distance and face width are directly linked to the available space (housing dimensions) and influence the overall size, weight and cost of the gears.

17 Product News (February 2019)

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

18 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.

19 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.

20 Introducing the Ball Screw (December 2018)

The Swiss Army Knife of PT Components.

21 Thermal Analysis and Optimization of Gearboxes by Simulation (December 2018)

With the increasing mechanical power capacity of gearboxes, the thermal power limit tends to become the limiting factor. To achieve a balanced system, the gear unit needs extra cooling. Using a fan that is mounted to a fast rotating shaft is a common solution. For this solution an optimal design is investigated.

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

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

23 Thermal Growth Issues and Solutions for Shaft Couplings (August 2018)

Many refineries and chemical plants are built with large pieces of rotating equipment in an outdoor setting exposed to the elements. The author has been researching thermal growth issues for decades across North America.

24 Couplings: Designed to Carry the Pay(load) (August 2018)

Couplings. There certainly is no shortage of couplings - or things to couple them with. There also seems to be no lack of applications for them. You say you need to reduce the transmission of shock loads from one shaft to another? That's a classic application for shaft couplings; but really, couplings are application-intensive. They're everywhere.

25 Engineering Showcase - Couplings (August 2018)

This issue Engineering Showcase features some of the leading suppliers of couplings.

26 Choose the Form (June 2018)

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

27 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.

28 Bogus Bearings Still on a Roll (April 2018)

Counterfeits continue to vex big-name suppliers

29 Smarter Machines Need Smarter Components (March 2018)

The future of motion control is connectivity. Read this issue to learn why.

30 Engineering Showcase 2018 (March 2018)

We are pleased to present our fourth annual Engineering Showcase, a celebration of some of the leading products and companies in mechanical power transmission. In the pages that follow, you'll find examples of engineering excellence and technological know-how in the field of gears, drives, couplings, machine parts and other mechanical components.

31 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.

32 Flexibility in Fluid Power (February 2018)

Latest Sealing Technologies Offer Optimum Wear and Frictional Characteristics.

33 Gear Expo 2017 Follow-Up (December 2017)

The following recap looks at some of the exhibitors from Gear Expo that manufacture mechanical power transmission components or provide resources for these components.

34 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.

35 10 Years and Counting (December 2017)

Just over 10 years ago, we started publishing Power Transmission Engineering, and I'm proud to say we're still going strong.

36 Whats on Your Menu (October 2017)

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.

37 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.

38 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.

39 Eats, Drinks and Treats (September 2017)

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

40 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.

41 Product News (September 2017)

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

42 Tailor-Made (August 2017)

The Role of Coupling Technology in Current Developments in Industry

43 Coupling Connection (August 2017)

Couplings and harsh environment use

44 Product News (August 2017)

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

45 Performance Testing of Composite Bearing Materials for Large Hydraulic Cylinders (April 2017)

Large hydraulic cylinders (LHCs) are integral components in the functioning of large machines in mechanically demanding, corrosive and abrasive environments, such as offshore drilling rigs. The materials utilized in these largescale hydraulic systems must deliver reliable performance throughout their expected lifecycle.

46 Product News (March 2017)

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

47 Engineering Showcase 2017 (March 2017)

One of our goals at Power Transmission Engineering is to help you understand, identify and select the best technology for your mechanical power transmission or motion control applications. With every project, you have to decide which components to use, and which suppliers, based on functionality, quality and price. We aim to help you make those decisions informed by providing the latest information on current technology, especially when it comes to mechanical components.

48 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.

49 The Big Picture (February 2017)

When you work day-in and day-out with components like gears, bearings or electric motors, for example, it's easy to forget that those components are always part of a much bigger system.

50 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?

51 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.

52 A Model for Rolling Bearing Life with Surface and Subsurface Survival - Tribological Effects (September 2016)

Until now the estimation of rolling bearing life has been based on engineering models that consider an equivalent stress, originated beneath the contact surface, that is applied to the stressed volume of the rolling contact. Through the years, fatigue surface–originated failures, resulting from reduced lubrication or contamination, have been incorporated into the estimation of the bearing life by applying a penalty to the overall equivalent stress of the rolling contact. Due to this simplification, the accounting of some specific failure modes originated directly at the surface of the rolling contact can be challenging. In the present article, this issue is addressed by developing a general approach for rolling contact life in which the surfaceoriginated damage is explicitly formulated into the basic fatigue equations of the rolling contact. This is achieved by introducing a function to describe surface-originated failures and coupling it with the traditional, subsurface-originated fatigue risk of the rolling contact. The article presents the fundamental theory of the new model and its general behavior. The ability of the present general method to provide an account for the surface–subsurface competing fatigue mechanisms taking place in rolling bearings is discussed with reference to endurance testing data.

53 The Brave New World of Industrial Automation (September 2016)

One of the best things about being a journalist — whether for example it be reporting on manufacturing, politics, show business, or anything else — is being paid to “go to school” and learning about any number of things that you were perhaps ignorant of at the outset.

54 Proper Handling of Bearings (September 2016)

Rolling-element bearings are high-precision components that need to be stored and handled carefully to perform as designed. Proper storage and handling of a bearing before, during and after installation is important because once debris enters a bearing, it reduces the life.

55 Product News (August 2016)

News about industry products.

56 Case Study: JBJ Techniques and the BLOODHOUND SSC Project (April 2016)

Specialist power transmission supplier JBJ Techniques Limited, of Redhill, Surrey, England were recently contacted by the staff of Bloodhound SSC R&D engineering team to solve a problem on the fuel pump test rig. JBJ Techniques had worked with various team members in the past and this previous experience made JBJ an easy choice to assist with this project. The scope of supply was to produce a suitable drive coupling with a maximum diameter of 160 mm, capable of transmitting 550 Nm @ 10,000 rpm, with as short an assembly as possible, and at the same time be able to accept misalignment within the drivetrain.

57 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.

58 PRODUCT NEWS (October 2015)

All about new Products

59 Belts Vs. Couplings (August 2015)

rotary-type blowers? Examples: for motor KW; RPM; temperature; pressure production; lifetime; etc. In other words, how do I choose between belts or couplings?

60 Product News (April 2015)

Latest Products

61 Engineering Showcase 2015 (March 2015)

One of our goals at Power Transmission Engineering is to help you understand, identify and select the best technology for your mechanical power transmission or motion control applications. With every project, you have to decide which components to use, and which suppliers, based on functionality, quality and price. We aim to help you make those decisions informed by providing the latest information on current technology, especially when it comes to mechanical components.

62 Precision Bellows Couplings (March 2015)

Bellows couplings first began to be widely used by machine tool builders in the mid-to-late 20th century. With the advent of CNC technology, machine engineers started looking to improve upon some of the negative influences traditional power transmission couplings can have on a precision rotary / linear motion system.

63 The Modified Life Rating of Rolling Bearings: A Criterion for Gearbox Design and Reliability Optimization (March 2015)

Engineers typically learn that the bearing L10 life can be estimated using the so called “C/P method” — or the “basic rating life” of the bearing, a method rooted in the 1940s. Major developments have since led to the “modified rating life,” released in ISO 281:2007, which includes the aiso life modification factor. In this paper a succession of equations used for bearing life ratings are reviewed, and current bearing life rating practices are discussed in detail. It is shown that — despite the introduction more than 30 years ago of the adjustment factor of the basic rating life, and the standardization in 2007 of the aiso modification factor — use of these improved calculation methods are not practiced by all engineers. Indeed — many continue referring to the old model as a way of seeking compliance with existing, established practices.

64 INDUSTRY NEWS (March 2015)

News From the Industry

65 Maximizing Your Power Transmission (Engineering) (February 2015)

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. They’re constantly working to maximize power density, increase energy efficiency and reduce costs to meet their customers’ needs.

66 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?

67 Product News (December 2014)

News from the industry about new products.

68 Getting a Piece of that Sweet Coupling Pie (December 2014)

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.

69 Industry News (December 2014)

News from around the industry.

70 Product News (October 2014)

News about new Products in the industry.

71 Industry News (October 2014)

PERSONNEL CHANGES AND EXPANSION HIGHLIGHT CICERO, ILLINOIS GEAR MANUFACTURER

72 Servo Technology - Centralized or Decentralized (October 2014)

Which architecture type delivers the best technical and commercial advantages ?

73 Product News (June 2014)

The complete Product News section from the June 2014 issue of Power Transmission Engineering.

74 Product News (April 2014)

The complete Product News section from the April 2014 issue of Power Transmission Engineering.

75 Forward March! (March 2014)

We're pleased to present the first-ever March issue of Power Transmission Engineering.

76 Product News (March 2014)

The complete Product News section from the March 2014 issue of Power Transmission Engineering.

77 Engineering Showcase 2014 (March 2014)

We are pleased to present our first annual Engineering Showcase, a celebration of some of the leading products and companies in mechanical power transmission. In the pages that follow, you’ll find examples of engineering excellence and technological know-how in the field of gears, drives, couplings, machine parts and other mechanical components.

78 Influence of Gear Loads on Spline Couplings (February 2014)

Involute splines are commonly used in gearboxes to connect gears and shafts, especially when high torque is transmitted through the coupling. The load is shared among multiple teeth around the coupling circumference, resulting in higher load capacity than a conventional single key. However, the total load is not equally shared among all spline teeth, mainly because of pitch deviations resulting from the manufacturing process. The load distribution along the spline engagement length is also nonuniform because of tooth misalignments and shaft torsional effects. This paper presents an investigation of the influence of spur gear loads on the load distribution of spline teeth.

79 Napoleon Engineering Services: Rigged for Success (December 2013)

For design engineers and purchasing agents alike, bearings can sometimes be like family. Oh, you know - can't live with 'em, can’t live without 'em.

80 PTE on a Growth Path (December 2013)

A core part of what we do here is making sure that our readers – the people who design, buy and use mechanical power transmission products – know where to find the suppliers of technology they need.

81 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.

82 The Efficient Drive System (December 2013)

It's a fact that drive systems wouldn't function properly or efficiently without couplings. They quietly go about their business of transferring motion from one drive element to the next. In the PT market today, couplings have the unique challenge of satisfying a variety of customer needs including tighter tolerances, higher speeds and a more versatile selection process.

83 A Mechanical Melange of Art, Movement and Memory (December 2013)

A brief history of automata, featuring Henri Maillardet's automaton at the Franklin Institute.

84 Industry News (August 2013)

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

85 Power Loss and Axial Load Carrying Capacity of Radial Cylindrical Roller Bearings (June 2013)

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.

86 John Oldham: The Coupling Personified (April 2013)

A biographical sketch of John Oldham, inventor of the Oldham coupling.

87 Electrical and Mechanical Torque Limiting (April 2013)

Q&A: My company manufactures high-speed metal forming machines. We have one application on a feed axis where we are encountering problems with the coupling...

88 Rolling Bearing Steels - A Technical and Historical Perspective - Part 1 (February 2013)

This paper summarizes the chemical, metallurgical and physical aspects of bearing steels and their effect on rolling bearing life and reliability.

89 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.

90 Smart Actuators for Off-Highway (February 2013)

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

91 Considering the Mechanical Aspects of ATEX (December 2012)

For the past 30 years or more, designers have paid due diligence to the electrical aspect of hazardous atmosphere equipment design, but have often ignored the mechanical side. In recent years, the mechanical aspects of ATEX design have increasingly come to light. Not only do electrical power transmission products, but also mechanical power transmission products need to comply with the ATEX directive.

92 The Things that Move Us (October 2012)

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.

93 Getting Creative (October 2012)

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

94 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...

95 Sorting Out Flexible Couplings (August 2012)

In most cases, industrial power transmission calls for flexible rather than rigid couplings in order to forgive minor shaft misalignment. For that reason, this article will focus solely on the selection of flexible couplings.

96 Industry News (August 2012)

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

97 Rolling Bearings in High-Speed Passenger Traffic (June 2012)

Passenger transport today moves significantly faster than ever before, often operating on separate tracks especially designed for high-speed trains. Accordingly, high-speed rolling bearings are very important components in the bogies of trains today. Maximum train speeds currently reach 380 km/h (236 mph) in the latest high-speed applications - 80% higher than in the earlier days of high-speed traffic. This paper presents two application examples of modern, high-speed traffic, together with some typical bearing arrangements and housings. It provides insight regarding measures taken in the bearing industry to meet the requirements of contemporary, high-speed traffic, and it cites important standards and regulations applicable for - but not restricted to - European applications. To be precise, the focus here is on journal bearings; information on traction motor bearings, transmission bearings and housings is included, but described in less detail.

98 The Best New Ideas (June 2012)

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.

99 Product News (June 2012)

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

100 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.

101 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.

102 (Material) Moving into the Future (June 2011)

a custom hydraulic brake system from Mico Inc. aid in the development of specialized material handling equipment.

103 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.

104 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.

105 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.

106 Product News (October 2010)

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

107 Safety Elements for Mechanical Torque Limiters (June 2010)

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.

108 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.

109 Oscillation Welding Protects Pipelines (April 2010)

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

110 Product News (February 2010)

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

111 Product News (October 2009)

The complete Product News section from the October 2009 issue of Power Transmission Engineering.

112 Product News (August 2009)

The complete Product News section from the August 2009 issue of Power Transmission Engineering.

113 Packaging Stimulus (April 2009)

Few industries are experiencing change quite as fast as the packaging arena. Lighter-weight containers are being introduced to reduce costs and energy use, packaging is being redesigned to attract consumer attention and manufacturers are using fewer materials in an effort to address environmental concerns.

114 Bellows Couplings: Proper Selection for Optimal Performance (February 2009)

For many years bellows couplings have been near the top of the list of flexible coupling choices for high-performance motion systems. Their high torsional stiffness, low moment of inertia and minimal restoring forces under misalignment make them a preferred choice for maintaining tight control over the load.

115 Going Green 101 (February 2009)

Perhaps you don’t need convincing that sustainability is the wave of the future. But where to start? Resources of all types—from websites to trade shows to white papers—are waiting to help green your operation. Most areas are home to regional business alliances devoted to helping local manufacturing outlets contribute in an environmentally sound manner. Here are a few go-to resources for going green.

116 Product News (December 2008)

The complete product news section from the December 2008 issue of Power Transmission Engineering.

117 Selection and Performance Criteria for Power Transmission Couplings, Part II (December 2008)

Part I of this article appeared in the October 2008 issue. It provided an overview and general classifi cations of power transmission couplings, along with selection and performance criteria for rigid couplings and misalignment-compensating couplings. Part II continues the discussion with selection and performance criteria for torsionally flexible and combination-purpose couplings.

118 Product News (October 2008)

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

119 Selection and Performance Criteria for Power Transmission Couplings (October 2008)

Power transmission couplings are widely used for modifi cation of stiff ness and damping in power transmission systems, both in torsion and in other directions (misalignment compensation).

120 Meet Harry - The Kinematic Kegler (August 2008)

Seven-Foot-Tall bowler throws strikes for scientific research.

121 Motion System Management (August 2008)

Companies focus on customization and quality in linear motion

122 Mold Machining Center Maintains Accuracy (June 2008)

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

123 Industry News (February 2008)

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

124 Bearing Lubrication Under Extreme Conditions, Part II (February 2008)

Rolling element or sleeve bearings often are required to operate under extreme conditions. In these instances, it is more important than ever to follow proper lubrication selection and maintenance procedures to maximize effective life and efficient performance.

125 Plastic Replacing Metal in Coupling Applications (Spring 2007)

When it comes to selecting a connecting element between a drive motor and a pump unit, engineers most often choose an elastomeric coupling because of its failure protection and its vibration damping capabilities. Elastomeric couplings, traditionally manufactured with metallic hubs, feature a rugged and robust design noted for its simplicity.

News Items About Lin Engineering

1 Lin Engineering Introduces New Drivers (August 9, 2007)
Lin Engineering introduced a RoHS compliant version of its R701 and R710 drivers.   These bipolar step motor drivers operate fr...

2 Lin Engineering Releases Step Motor, Driver, Controller and Encoder in One Unit (March 8, 2007)
Lin Engineering released the SilverPak 23CE, an integrated NEMA 23 high torque step motor, microstepping driver, intelligent controller,...

3 Lin Engineering Introduces New Damper (January 15, 2006)
Lin Engineering  introduced its new line of NEMA 17 dampers.  These dampers can easily be mounted ...

4 Lin Engineering Introduces New Motors (April 13, 2005)
Lin Engineering Inc. has introduced a new line of IP65-rated motors. These motors are available in size 17 and 23 and offer protection a...