bearings

Articles About bearings


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1 Not All Thin-Section Bearings Are Created Equal (February 2011)

American Bearing Manufacturers Association (ABMA) Standard 9 and ISO 281 give equations for calculating the basic dynamic radial load rating for ball bearings. These equations are based on a number of assumptions, many of which are not valid for thin-section bearings. (Thin-section bearings are described in ABMA standard 26.2.) Nevertheless, many thin-section bearing catalogs report load ratings based on these equations. Kaydon has developed a new method for calculating the dynamic radial load rating for thin-section ball bearings. The new method uses the contact stress and the number of stress-cycles-per-revolution to calculate the capacity. The new numbers are based on five years of actual test results. These equations can also be used to calculate the dynamic radial load rating for four-point contact ball bearings, which are not covered in ABMA standard 9 or ISO 281.

2 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.

3 Meet Norm Parker - Bearings Blogger (April 2017)

In case you missed them, following are three recent blog postings by our popular PTE bearings blogger - Norm Parker. We also felt that, should you not be a blog follower, this would be a good way to introduce you to Norm’s bearings wisdom. Parker is currently the global senior specialist/roller bearings at Fiat Chrysler Automobiles (FCA).

4 Non-Metallic Bearings - An Alternative Worth Considering (June 2011)

This article takes a look at alternative-material, non-metal bearings, and it turns out the first bearings of that type - wood, in this case, were the norm - not an alternative.

5 Sleeve Bearings or Tilting Pad Bearings - Ask the Expert (August 2012)

A reader asks whether sleeve bearings can take the place of more expensive tilting pad bearings in a high-speed compressor application.

6 Setting Techniques for Tapered Roller Bearings (September 2015)

Tapered roller bearings can be set at initial machine assembly to any desired axial or radial clearance. This unique feature enables a designer to control bearings to meet anticipated application operating conditions, and thereby provide optimum bearing and system performance.

7 Defining and Predicting Housing Strength for Mounted Bearings (February 2017)

Design engineers across industries rely on pillow block bearings for a variety of tough and unconventional applications. Having access to data that backs housing strength performance claims is an integral part of choosing the right bearing to keep operations running optimally. What design considerations must be made when the application demands a pillow block installation on a non-horizontal orientation? What happens when bearing load is not applied through the base of the unit? Timken answers these questions with physical testing, advanced modeling and real-world experience to facilitate the selection of pillow block bearings for specific applications.

8 Eight Reasons to Use Air Bearings Over Mechanical Bearings (December 2016)

Mechanical guiding systems, such as crossedroller bearings, work well for most motion control applications; however, when precision, angular repeatability, and geometric performance (runout, straightness…) are critical or where submicron bearing rumble is problematic, air bearings are recommended. An air-bearing stage is a rotary or linear positioner that floats on a cushion of air, using one of several preload mechanisms, nearly eliminating mechanical contact and thus wear, friction, and hysteresis effects. Here are eight reasons why an air-bearing stage might be the right choice for your application:

9 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?

10 The Path to Smarter Bearings (June 2015)

At Hannover Messe, Power Transmission Engineering had the opportunity to sit down with Stefan Hantke, president of the Industrial North America division of Schaeffler USA, to discuss the current stateof- the-art in bearings manufacturing, the trends in industrial bearings and the current state of U.S. manufacturing. (In the meantime Stefan Hantke has taken over responsibility for the global sales activities of Schaeffler Industrial)

11 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.

12 Application of Ceramics to NU-Type Cylindrical Roller Bearings for Machine Tool Main Spindles (December 2011)

Bearings used to support main spindles on machine tools must be capable of higher speed and greater rigidity. This is true in that any main spindle that turns together with a tool or work piece mounted onto it is one of the critical machine tool components that directly affects machining efficiency and accuracy of the machine tool; and, the bearings that support the main spindle are the most critical machine elements on the machine tool.

13 Minimum Design Speed Considerations for Sleevoil Bearings for Industrial Fan Applications (September 2016)

Slow speed operation of fan systems within the air handling industry is generally performed due to two reasons: a coast down operation is required for hot (induced draft) fans to cool down before shutdown (often by using a turning gear), and operational efficiency improvements can be achieved during non-peak periods by slow speed operation using a VFD. In either case, when these fans are supported by hydrodynamic bearings, it is the oil film thickness developed from the bearing-shaft interaction that limits the minimum speed that can be maintained without causing premature wear and bearing failure. This paper will present a brief overview of lubrication theory and critical design parameters to achieve slow speed operation.

14 Adjusting Tapered Roller Bearings (June 2014)

What are the best methods to adjust tapered roller bearings?

15 Wear-Resistant Bearings (August 2012)

More than a decade of intensive research and development has resulted in two new technologies that, when used in combination, expand the performance of rolling element bearings well beyond previous limits.

16 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.

17 Beyond Bearings Basics (October 2015)

There are thousands of sizes and types of standard bearings. In many applications, specifying a standard bearing yields an effective result.

18 Bearings for High Temperatures (Fall 2007)

When rolling element or sleeve bearings operate under extreme conditions, it’s more important than ever to follow proper lubrication selection and maintenance procedures to maximize eff ective life and effi cient performance.

19 Premature Bearing Failures in Wind Gearboxes and White Etching Cracks (October 2014)

Wind turbine gearboxes are subjected to a wide variety of operating conditions, some of which may push the bearings beyond their limits. Damage may be done to the bearings, resulting in a specific premature failure mode known as white etching cracks (WEC), sometimes called brittle, short-life, early, abnormal or white structured flaking (WSF). Measures to make the bearings more robust in these operating conditions are discussed in this article.

20 Radial Play (Internal Clearance in Ball Bearings) (August 2011)

At first glance, ball bearings are relatively simple mechanisms. However, an analysis of their internal geometries reveals that they are quite complex. For example, the ball to raceway conformity, the radial play, and the number of balls all impact the ability of a ball bearing to support loads under a variety of conditions.

21 A Recipe for Quality Big Bearings (June 2010)

Many power transmission components require a certain level of customization for each individual project. The big bearing market is no exception. Construction, mining, steel, marine and wind applications aren’t exactly areas where customers buy bearings in bulk.

22 Bogus Bearings Beat Price and Lead Time, But at What Cost (April 2010)

When your $100 “Rolex” falls apart on your wrist, well, what did you expect? But when bogus bearings find their way into safety-sensitive applications, lives are at stake.

23 High-Capacity Bearings Carry the Load for Chinese Gearbox Manufacturer (December 2008)

Th e signing of a contract for more than 5,000 sets of SKF’s latest high-capacity cylindrical roller bearings (HCCRB) for wind turbines will impart added load-carrying capacity, more reliability and longer life to the Nanjing Gear Company’s (NGC) line of gearboxes for wind generation applications.

24 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.

25 Rolling Bearing Service Life Based on Probable Cause for Removal - A Tutorial (August 2017)

A bearing service life prediction methodology and tutorial indexed to eight probable causes for bearing failure and removal are presented - including fatigue. Bearing life is probabilistic and not deterministic. Bearing manufacturers' catalogue (L10) bearing life is based on rolling-element fatigue failure, at which time 90% of a population of bearings can be reasonably expected to survive, and 10% to fail by fatigue. However, approximately 95% of all bearings are removed for cause before reaching their L10 life. A bearing failure can be defined as when the bearing is no longer fit for its intended purpose. For a single bearing, you can only predict the probability of a failure occurring at a designated time - but not the actual time to failure.

26 Smart Bearings are in Control--But Full Potential Remains Untapped (June 2009)

Bearings with integrated sensors are used in a wide variety of applications, but many potential industrial uses are not yet implemented.

27 Four-Point Bearings Do Triple Duty While Saving Space (March 2015)

A four-point contact ball bearing makes it easy to simplify machine designs that combine radial, thrust and moment loads, because it can handle all three simultaneously. They are primarily used for slow-to-moderate-speed applications, or where oscillatory movement is predominant.

28 How To Use a Hand-Held Micrometer to Measure Miniature and Instrument Ball Bearings (December 2013)

For the most accurate measurements, miniature and instrument ball bearing dimensions should be measured with a calibrated air gauge. A good second option is a calibrated optical comparator. On occasion, it may be necessary to use a calibrated, hand-held micrometer to double-check a measurement or for simple verification while working in the field.

29 Gear Lubrication: Long-Term Protection for Wind Turbines (April 2014)

The chemical and physical properties of gear oils may change, depending - more or less - upon their formulation and the environmental conditions under which they are used. This is why - after three years of use in a wind turbine - a gear oil was examined to determine if indeed changes were evident and if the protection of the gears and rolling bearings still met the same requirements as would be expected of fresh oil. Our findings revealed that the existing gear oil - as well as its ability to protect the gears and rolling bearings - had degraded very little compared to fresh oil.

30 Preventing Downtime for Hanger Bearings (April 2016)

Dale Renner, CBS and sales representative at Bearing Headquarters Co., explains how his bearing expertise helped solve a customer’s problem and saved significant downtime and cost.

31 Tales from the Bearings Blog (June 2015)

The following short articles first appeared on www.powertransmission.com. They are part of the ongoing series of hints, technical tidbits and inside knowledge presented by our resident blogger, Norm Parker. If you like what you see here and are interested in learning more, visit www.powertransmission.com/blog.

32 Bearing Associations Help Demystify Bearings Buys (June 2013)

The ABMA, BSA and PTDA help keep things rolling.

33 Ceramic Bearings for Water Processing, Water Filtration and Liquid Handling Applications (October 2016)

Bearings are an essential component in the majority of mechanical designs and equipment. It is important to consider the most effective materials when designing industrial machinery, especially in applications where water or other liquids are present. Many materials will be unable to overcome the challenges associated with operating in a wet or corrosive environment.

34 Bearing Lubricant Solution (December 2016)

A Chicago-area bakery was replacing the tray support bearings in its ovens on a reactionary basis. Their weekly inspection cycle was resulting in two mechanics spending an average of 20 labor hours per week to replace failed bearings. The premature bearing failures were caused by a combination of the high heat and humidity in the ovens, resulting in lubrication failure and contamination. When BDI was asked to recommend a solution, the bakery was averaging one month of bearing life in this application.

35 Plastic Bearings Have Staying Power (April 2015)

During the past three decades there has been an evolution in the advancement and use of highly engineered plastics in bearing applications.

36 Study of Multiple-Point Oil-Jet Lubrication of High-Speed Ball Bearings (June 2014)

The air-oil, two-phase flow inside the multiple-point, oil-jet lubrication ball bearing was studied based on CFD (computational fluid dynamics) theory and technique, and compared with single-point, oil-jet lubrication. The results indicate that the air-oil distribution inside the bearing with multiple-point, oil-jet lubrication is more uniform than single-point injection.

37 Gearbox Bearing Service Life: A Matter of Mastering Many Design Parameters (April 2012)

The availability of high-strength shaft materials, in combination with bearings with high carrying capacity, allows use of slimmer shafts. However, the modulus of elasticity remains the same, so seat design for bearings and gears must be given close attention.

38 Desktop Engineering - How to Calculate Dynamic and Static Load Ratings (February 2015)

When comparing bearing suppliers, engineers are often left with few options other than to compare dynamic load ratings and corresponding life calculations. Of course, we can look at steel and manufacturing quality; but if we are comparing sources of similar quality, those items may not provide a large contrast. It often surprises people to learn that bearing capacities are calculated values, not tested values. Lately, however, a trend is emerging for bearing suppliers to increase their ratings for higher performance bearings that have premium features such as higher quality steel and specilaized heat treatment. Bearing companies are under intense competitive pressure to make every feature add to the dynamic capacity of their bearings because it is very well understood that an increase in capacity adds to the bottom line.

39 Dude - Where's My Preload (August 2014)

Many of us have been there; the bearings had the correct preload. You know it, you were there, and you personally saw the measurements. Now, the testing is done and the preload is gone. Not a little gone, not sort of gone - gone, gone. Finger pointing ensues. Suppliers are dragged in by their wrinkly Polo collars. You know the drill. Losing preload in a tapered roller bearing (TRB) system over the life of your application can be a troublesome problem, particularly for gear sets that are prone to noise or severe applications that rely on a very rigid and stable system.

40 Grip Tight Done Right (February 2008)

Baldor bearings make the grade with Sapphire Recovery and Twin City Fan.

41 High-Temp Bearing Replacement (August 2016)

Richard (RJ) Seguin, CBS and technical sales representative at AMI Bearings, explains how his bearing expertise tripled the life of a customer’s bearings.

42 A Major Step Forward in Life Modeling (March 2017)

The SKF Generalized Bearing Life Model is (GBLM) an innovative new bearing rating life model that is designed to help engineers calculate bearing rating life in a more realistic manner. The new model is a major step forward for the industry and will play an important role in enabling OEMs and end users to better match bearings and applications, resulting in improved machine life and reduced operating costs.

43 Bearing Good News (April 2017)

This issue's focus on bearings includes a number of important and informative articles about one of the most key components in any machine design.

44 Investigations of Bearing Failures Associated with White Etching Areas (WEAs) in Wind Turbine Gearboxes (March 2014)

A critical problem for wind turbine gearboxes is failure of rolling element bearings where axial cracks form on the inner rings. This article presents field experience from operating wind turbines that compares the performance of through-hardened and carburized materials. It reveals that through-hardened bearings develop WEA/WECs and fail with axial cracks, whereas carburized bearings do not. The field experience further shows that a carburized bearing with a core having low carbon content, high nickel content, greater compressive residual stresses, and a higher amount of retained austenite provides higher fracture resistance and makes carburized bearings more durable than through-hardened bearings in the wind turbine environment.

45 Bearing the Brunt of Earthquakes (December 2016)

America suffers $4.4 billion in losses due to earthquakes every year. While that’s a drop in the bucket for our $16 trillion plus GDP, it's still a substantial amount of money, and some people are working to lessen those losses. One group is Earthquake Protection Systems (EPS), a company that is designing bearings to better protect buildings from earthquake damage.

46 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.

47 Saltwater Solutions from igus (April 2008)

igus bearings solve undersea issues for the marine vehicle industry.

48 He Shoots, He Scores! (April 2016)

There’s nothing quite as satisfying as scoring a goal. Here at Power Transmission Engineering, our goal is to provide you with as much relevant educational and technical material as possible, and every issue we strive to cover the subjects of power transmission and motion control from as many different angles as possible, so that no matter your job title, and no matter your industry, if gears, bearings, motors and related components are important to you, we’ve got you covered.

49 Proper Bearing Installation (June 2016)

Gregory (Keith) Boutwell, CBS and executive account manager at B&D Technologies (a division of B&D Industrial), explains how he used his bearings expertise to save a customer thousands of dollars through correct bearing installation.

50 Motion Drive and Automation at Hannover 2013 (April 2013)

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

51 Preventing Roller Bearing Failure (December 2015)

I’m building a custom gearbox with 7075 T-6 spur gears, and I’m concerned that aluminum flakes will enter the races on the roller bearings (SKF 2307) and cause premature failure. So my question is — should I place an oil seal on the shaft first to protect the bearing — or is this an unfounded concern and I should mount the seal in the typical manner outside the bearing? Or both? Or go with a sealed bearing? I’m confused and could use your expertise, please.

52 Grease Lubrication Mechanisms in Rolling Bearing Systems (October 2013)

Grease lubrication has clear advantages over oil lubrication: Grease does not leak easily; it has sealing properties; and it protects bearing surfaces from corrosion. Its disadvantages are grease-life limitations and a limited cooling ability. Moreover, in some applications there is a risk of grease starvation, which leads to reduced lubricating films. However, if the right grease, sealing system and/or lubrication system are chosen, then grease lubrication offers clear benefits. This article summarizes aspects of grease lubrication mechanisms in rolling bearings.

53 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.

54 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.

55 The Best-Kept Secret in Green Technology (December 2009)

The Bearing Specialists Association explains the role of bearings in ensuring the efficient operation of machinery.

56 Energy Efficiency by Using Innovative Bearing Solutions (August 2010)

Based on simulation methods and calculation tools developed by the Schaeffler Group and presented in the first part of this paper, three approaches regarding increased efficiency based on rolling bearings are presented.

57 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.

58 Should You Pay a Premium for a Mounted Ball Bearing (December 2013)

Mounted ball bearings are everywhere in industrial applications. They serve critical roles in keeping a manufacturing operation running smoothly and in ensuring that equipment functions properly and reliably. So why might it be advisable to spend significantly more for a dimensionally comparable bearing from one supplier versus another?

59 Zero Friction Solution (June 2012)

Air bearings provide a more-precise view of print head variations.

60 Lower Service Life Plus Less Waste Equals Lower Cost (April 2014)

Bearings that show wear may not always need to be replaced. Depending on the degree and type of wear, they may be candidates for reconditioning, a process that restores bearings to like-new specifications and performance - at an average 50 to 60 percent of the cost of replacement.

61 The Quick Fix - Rexnord Solves Bearing Installation and Removal Challenges (June 2012)

At a Midwestern producer of tubular steel products, measures taken to counteract the effects of impact on a quench tank roll made it difficult to remove and replace the conventional pillow block bearings that support the roll’s shaft.

62 Intermetallic Nickel-Titanium Alloys for Oil-Lubricated Bearing Applications (August 2009)

Nitinol 60 (60NiTi), an intermetallic nickel-titanium alloy containing 60 wt % nickel and 40 wt % titanium, is shown to be a promising material for oil-lubricated, rolling and sliding contact applications such as bearings and gears.

63 Tapered Roller Bearing Application Guide (June 2014)

This article summarizes some common hurdles, issues and questions encountered by the newer and casual users of tapered roller bearings.

64 PT Extras (April 2013)

The latest power transmission videos, articles and updates from online.

65 Choosing the Right Grade - Specifying Stainless Bearing Steel (August 2014)

A reader asks: I've determined that a stainless steel bearing is the best option for my application. I'm being asked to specify the grade of stainless steel in my product design. I'm not sure which grade to select and specify. Can you help?

66 Industry News (April 2011)

The complete Industry News section from the April 2011 issue of Power Transmission Engineering.

67 In Transit (December 2016)

The average travel time to work in the United States is 25.4 minutes, according to the U.S. Census Bureau. This number is probably low if you factor in a traffic accident in New York City, light rain in Chicago or it’s simply Tuesday in Los Angeles. It’s safe to say 25.4 turns into 45 minutes in many areas of the country at seven o’clock in the morning.

68 Cutting Downtime in Lumber Application (September 2016)

Ernest Head (Arnie), CBS and technical sales representative at Motion Canada helped save a lumber industry customer time and money by adapting a bearing solution for another client. Here’s how:

69 Improved Fuel and Energy Efficiency Through Optimized Bearing Design and Selection (February 2008)

Today, better fuel economy is a main objective in the automotive development process. It remains top-of-mind with the auto industry and consumers because of costs and environmental impacts. Because the industry’s average fuel-economy standard is required to increase by 40 percent by 2020, manufacturers and engineers are working to develop fuel-efficient, environmentally friendly and reliable designs for vehicles.

70 Special Modifications (October 2016)

Eddy Swiben, branch manager at BDI Canada, explains how to problem solve on an automatic cutter for tissue rolls. “This is a very major paper tissue manufacturer that sells paper tissue rolls all over America.” They roll paper tissue just like newsprint paper mills do. When the product is finally done and dried, they need to roll it on a light carton core 20-ft. long.

71 Selecting the Right Precision Ball Material for Aggressive Environments (February 2010)

This article will examine the major materials used to enhance balls to resist aggressive environments and help in selecting the right one.

72 Getting to Know Your Bearing (August 2017)

Software Design, Analysis and Calculation Tools Help Solve Today's Engineering Challenges

73 Software Bits (August 2017)

The latest updates in software for bearing design.

74 The Long and Short of It (October 2017)

10,000 Year Clock Needs Bearings that Run for 350 Million Cycles.

75 The Green Revolution - A Global Win-Win (February 2009)

Green technology is more than changing a couple of light bulbs or reducing waste. In 2009, the concept is relevant in every facet of manufacturing as companies make a greater push towards energy efficiency and sustainability. In the power transmission and motion control fields, this technology has been integrated into the daily routine, both as an environmentally friendly business venture and a way to offer green products to customers. It’s apparent that the revitalization of manufacturing, both here and abroad, will center on energy technology.

76 The Hidden Cost of Incomplete Hydrodynamic Bearing Maintenance (April 2017)

Reliability and maintenance engineers can improve uptime and save money on both long-term maintenance and downtime costs by properly diagnosing and correcting bearing vibration issues when they exceed their acceptable limits. This requires inspecting the housing as well as the liner for wear, and replacing them as a pair when the housing is worn, so that wear-in between the mating surfaces can occur.

77 Improving Equipment Uptime - Composite Seals Meet the Challenge (October 2009)

In an industrial application, equipment uptime is vital for on-time performance and profitability. The rotating members of industrial machines are subject to the highest degree of wear and are more susceptible to failure than non-moving parts. Bearing surfaces are the most critical and often the most expensive portion of the rotary assembly; it is imperative to protect these components. The primary protector of these components is the industrial seal.

78 Rolling Bearing Steels - A Technical and Historical Perspective, Part 2 (April 2013)

This paper is part 2 of 2 in a series that summarizes the chemical, metallurgical and physical aspects of bearing steels and their effect on rolling bearing life and reliability.

79 Boilermakers Announce Bearing Technology Breakthrough (June 2013)

Student research project at Purdue could revolutionize predictive bearing failure.

80 Opening the Envelope on Bearing Vibration (September 2016)

Experienced operators can often tell if a machine is not working properly, on the basis that it does not ‘sound right.’ The same principle can be applied — using modern electronics — to identify the exact cause of the problem. Sensitive accelerometers can detect and analyze the vibrations from industrial equipment, highlighting problems such as misalignment or bearing imbalance. The technique is known as vibration analysis. It can identify bearing failure in the very early stages, when there is a microscopic defect on the raceway, for example. The problem is that the identifying signal is usually drowned out in all the other noise emanating from the machine.

81 Product News (April 2017)

Clutches and Brakes take center stage in the April 2017 edition of Product News.

82 Industry News (February 2008)

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

83 Industry news (October 2016)

Latest News from around the industry.

84 The True Cost of Bearing Lubrication (June 2015)

Machine and equipment manufacturers today are feeling more pressure than ever to reduce costs without sacrificing machine performance — a balancing act difficult to achieve. OEMs often overlook a simple solution that can have a positive, long-term impact on profitability for themselves and their customers, i.e. — the elimination of bearing lubricant.

85 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.

86 Cruising with Curiosity (December 2012)

Power Transmission Components from Forest City Gear, Kaydon Bearings and Maxon Motors help power NASA's Curiosity Mars Rover.

87 Recalibrated Equations for Determining Effect of Oil Filtration on Rolling Bearing Life (September 2015)

In 1991, Needelman and Zaretsky presented a set of empirically derived equations for bearing fatigue life (adjustment) factors (LFs) as a function of oil filter ratings.

88 Fluid Power Free-for-All (February 2014)

IFPE offers the right balance of technology and education.

89 Best Practices for Bearing Protection (June 2014)

For either brand-new motors or those already in service, "best practices" means that informed technicians can make use of the latest diagnostic techniques (vibration analysis, thermography, shaft-voltage testing, etc.) to prevent electrical bearing damage -- either at the very beginning or very quickly thereafter. If done correctly, the work need only be done once.

90 PT Extras (September 2014)

Videos, tweets, blog posts and other online exclusive from PTE and mechanical power transmission component suppliers.

91 Analyzing Wind Power (August 2016)

Wind is a form of solar energy. Winds are caused by the uneven heating of the atmosphere by the sun, the irregularities of the earth’s surface, and rotation of the earth. Wind Turbines convert the kinetic energy in wind into mechanical power.

92 TLC Still Needed for New Axles (September 2014)

A reader asks: I have heard that new axles no longer need a break-in period. True or false?

93 Bearing Basics (October 2014)

BEARINGS BASICS Q&A: IN CASE YOU DIDN’T KNOW…

94 Calculating Inner Race Diameter (December 2012)

In this Ask the Expert article, Hans Wendeberg from SKF discusses some of the things you need to know when calculating bearing diameters.

95 All for One, One for All (February 2014)

Collaboration moves bearing modeling and simulation software forward

96 Load Ratings & Bearing Life (March 2016)

Power Transmission Engineering is collaborating with the Bearing Specialists Association (BSA) on a special section within the magazine. Bearing Briefs will present updated reports on bearing topics for each issue in 2016. Complimentary access to all BSA Bearing and Industry Briefs is available on the BSA website at www.bsahome.org/tools.

97 Capacity--And the Lack of It--Rules (February 2008)

U.S. wind turbine growth puts a new spin on bearing manufacture.

98 The Skating Life (October 2012)

SMB Bearing Offers Unique Solutions for NorthwoodsFB finger-size skateboards.

99 Analyzing the Poultry Process (June 2016)

Power Transmission Engineering is collaborating with the Bearing Specialists Association (BSA) on a special section within the magazine. Bearing Briefs will present updated reports on bearing topics for each issue in 2016. Complimentary access to all BSA Bearing and Industry Briefs is available on the BSA website at www.bsahome.org/tools.

100 Have a Pump, Motor, Generator, Turbine, Compressor or Gearbox - There is a Bearing for That! (October 2012)

Waukesha Bearings is known internationally for its capabilities, technology, size and application experience in the rotating (turbo) equipment industry. Following is a brief selection guide intended to assist engineers, specifiers, integrators and others in choosing the right bearing—and bearing technology—for the application.

101 Analyzing the Cement Process (April 2016)

The manufacturing process begins in a limestone quarry. Mining methods such as ripping, dozing, drilling and blasting are commonly employed. Limestone provides the first essential component, calcium, for the anufacture of cement. Materials are transported to the crushing plant for further size reduction. Common methods of transport are trucks, loaders and belt conveyors.

102 The SKF High-Capacity Cylindrical Roller Bearing (Spring 2007)

Th e ISO defi nition of a full- complement bearing states that the bearing does not have a cage. When that defi nition was written, it was not technically possible to have a full-complement bearing with a cage. But SKF’s new high-capacity cylindrical roller bearing combines the load-carrying capacity of a fullcomplement bearing with the benefi ts of a bearing with a cage (Fig.1).

103 Counterfeit Consequences (February 2016)

Power Transmission Engineering is collaborating with the Bearing Specialists Association (BSA) on a special section within the magazine. Bearing Briefs will present updated reports on bearing topics for each issue in 2016. Complimentary access to all BSA Bearing and Industry Briefs is available on the BSA website at www.bsahome.org/tools. Additionally, our new Field Notes section on page 34 will feature field reports from BSA’s Certified Bearing Specialists.

104 Identifying Bearing Failure (February 2016)

Guy Gendron, certified bearing specialist and technical sales representative at Timken Canada L.P. explains how he used his bearing expertise to increase a customer’s productivity.

105 Industry News (February 2016)

Latest news from around the Industry

106 Finite Element Evaluation of Bearing Instrumentation Method (December 2014)

This paper presents an evaluation of measurements being taken on a 750 kW wind turbine gearbox being tested by the National Renewable Energy Laboratory (NREL). High-speed stage gears and bearings have been identified as critical components of the gearbox; during gearbox testing, these components were instrumented and tests were developed to evaluate loads on high-speed tapered roller bearings (TRBs). In this paper an advanced finite element-based contact modeling procedure has been applied to model the high-speed stage with the bearings fully modeled in order to evaluate strain levels. A major conclusion is that the strains of the slotted grooves are at such a level that they have acceptable signal-to-noise levels. This was verified by the results of the initial experiments presented here.

107 The Meaning of Life (August 2016)

End users and OEMs frequently specify "lubed-for-life" mounted bearings, thinking the lubed-for-life bearings will deliver the same life — without lubrication — as bearings that currently require periodic lubrication. The truth is it depends on many factors, and only a detailed review of the application and testing will provide a more accurate answer.

108 Clutches: Declassified (March 2016)

In the world of PT components, the clutch gets absolutely no recognition whatsoever. There are entire magazines dedicated to gears, bearings and motors, but clutches get very little press outside of the automotive industry.

109 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.

110 What Lubrication Method Should I Use (April 2016)

in the performance and life of a rolling element bearing. Less than 10 percent of bearings reach their theoretical L10 life, and poor lubrication can be attributed to 80 percent of those that fall short. Ideally, a lubricant forms a film layer between moving components in a bearing, separating moving parts, minimizing friction and preventing wear between balls or rollers, raceways and retainers. Lubricants also protect metal surfaces from corrosion and moisture, dissipate heat and can even prevent the ingress of contaminants.

111 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.

112 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.

113 Mutiple Gearset-Type Calculation Software (September 2015)

Is there a gear software package out there that will calculate the design of spur, helical, worm, and planetary gearsets? Also, we would like a program that calculates stresses and material selection. Finally, we would like to have the program calculate bearings loads, too. Thank you for your help.

114 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.

115 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.

116 2016 PTE Buyers Guide (December 2016)

A comprehensive directory of suppliers of gears, bearings, motors, couplings and other mechanical power transmission and motion control components.

117 MDA, IANA and IMTS 2016 (August 2016)

Where to find the gearboxes, bearings, couplings and other components.

118 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...

119 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.

120 Axis of Rotation Metrology (August 2009)

In the history of machine tools, spindles have been very good relative to other bearings and structures on the machine. So quality professionals have developed a cache of tools—-ball bars, grid encoders displacement lasers, etc.—-to help them characterize and understand the geometry of the structural loop. But as machine tools have improved in their capability and precision, and the demands of part-geometry and surface finish have become more critical, errors in spindles have become a larger percentage of the total error.

121 Run Like the Wind - Windpower Conference Heads to Chicago (April 2009)

Wind is the talk of the town. It has become especially relevant to the power transmission community where bearings, gears, couplings, motors and gearboxes are providing the equipment for this thriving alternative energy industry. It comes as no surprise that the Windpower 2009 Conference and Exhibition, arriving in Chicago from May 4–7, will be the largest gathering of wind energy professionals and technologies to date.

122 Rolling-Element Bearing Analysis (June 2013)

This article describes how more sophisticated modeling techniques allow the latest software to identify design issues with bearings, shafts, gears and complicated multi-body systems.

123 Product News (April 2013)

SKF energy-efficient bearings, Bishop Wisecarver guided motion system, Weiss torque rotary table, Mico wireless braking system, Nord worm gear series, and SKF expanded range of couplings.

124 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...

125 Best Practices for Gearbox Assembly and Disassembly (March 2014)

In most applications, gearbox reliability is critical to the productivity of the overall plant operation. So it follows that when industry is looking at the best ways to increase efficiency, reduce downtime, and increase profitability, gearbox performance and reliability are key factors. Designing for repair, and writing effective repair procedures, can speed the service time, and provide a quality refurbishment. The best practices listed in this article are proven, effective methods used to install and remove bearings, seals, gears, couplings and shafts within a gearbox.

126 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.

127 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.

128 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.

News Items About bearings

1 EDT Introduces Type E Solution Bearings (June 4, 2013)
EDT Corp has added Type E bearings to its Solution line of severe service bearings. Type E Solution bearings have high load capacity and ...

2 Bearings for the Food Processing Industry (April 1, 2011)
Boca Bearings recently introduced their new and expanded line of full ceramic bearings, ceramic hybrid bearings and specialty lubricates ...

3 Boca Ceramic Bearings Offer Flexibility (September 26, 2011)
Boca Bearing Company is introducing a new line of full ceramic bearings, ceramic hybrid bearings and lubricants catered towards the autom...

4 NKE Introduces New Ball Bearings (May 31, 2007)
NKE introduced its new range of single row deep groove ball bearings. The new NKE POP range of single row deep groove ball bearings o...

5 SKF Bearings Offer Less Friction and Consume Less Energy (October 11, 2010)
SKF ball bearings for electric motors have been introduced as alternatives to standard bearings by generating significantly less friction...

6 Revolvo Expands Range of Roller Bearings (December 5, 2007)
Revolvo has expanded its lineup of roller bearings with the introduction of flange, hanger and take-up bearings. According to the company...

7 Bearings Six Times More Wear Resistant (November 16, 2010)
Maintenance-free plastic plain bearings made from iglide T500, one of 12 standard materials from bearings specialist igus, are high-tech ...

8 NKE Introduces Electrically Insulated Roller Bearings (December 6, 2010)
NKE Austria recently introduced electrically insulated rolling bearings. The special bearings SQ77 feature a built-in electrical insulati...

9 New Series of Self-Clinching Press Bearings Feature Acetal or Sintered Bronze Bearings (April 30, 2006)
Two new series of press bearings from SDP/SI feature Teflon-filled acetal or oil-impregnated sintered bronze bearings. Uses include mot...

10 Bearings and Balls for Turbine Flow Meters (December 29, 2010)
The Boca Bearing Company recently announced a new line of ceramic balls, stainless steel bearings, ceramic hybrid bearings and full ceram...

11 SKF INSOCOAT Bearings Deliver Higher Performance Capabilities (May 15, 2017)
SKF’s INSOCOAT bearings range comprises bearings with an electrically insulating coating on the external surfaces of its inner or o...

12 SKF Offers Sour Gas Compressor Bearings (November 13, 2013)
SKF recently announced the inclusion of SKF sour gas compressor bearings into the SKF BeyondZero portfolio. The bearings significantly ex...

13 Revolvo Offers Split Roller Bearings for Harsh Environments (July 18, 2012)
The advantages provided by split roller bearings in delivering greatly reduced downtime compared to solid bearings are well documented: s...

14 Boca Bearing Expands Mounted Unit Bearings and Inserts (August 3, 2017)
The Boca Bearing Company is proud to announce the expansion of their line of mounted unit bearings and inserts. Mounted unit bearings are...

15 igus Offers Sliding Slewing Ring Bearings (December 1, 2010)
Sliding slewing ring bearings from igus are lubrication-free and can replace roller slewing rings in rotating or turntable applications.&...

16 Baldor Releases ER Style Ball Bearings (May 23, 2013)
Baldor Electric Company is pleased to introduce a new and versatile line of Baldor•Dodge ER-Style ball bearings available in two sha...

17 Kilian Offers Quiet-Running Bearings for Conveyor Applications (October 13, 2017)
CB-14 Series conveyor bearings from Kilian Manufacturing are specifically designed to operate quietly and dependably in the most demandin...

18 LM76 Releases Self Lubricating Bearings (November 9, 2010)
Self lubricating, sintered bronze and power metal alloy plain bearings from LM76 feature: high precision, high load capacity, high speed,...

19 Metcar Offers Custom Bearings (February 12, 2013)
Metallized Carbon Corporation announces the availability of custom carbon-graphite bearings, specially designed for running submerged in ...

20 Renishaw Offers Encoders for Wind Turbine Bearings (December 20, 2012)
Blade pitch adjustment is one of the most critical functions of wind turbine operation, and the giant bearings in the adjustment mechanis...

21 New Needle Roller Pressbearings from QBC Are Self-Aligning (May 31, 2012)
A new series of inch and metric needle roller pressbearings from Quality Bearings & Components - QBC are self-clinching and self-alig...

22 Igus Rod End Bearings Offer Versatility (April 3, 2012)
Igus now offers its igubal K-Series rod end bearings in a clip version with different ball materials.  The new clip-in feature makes...

23 QBC Offers Flanged Sleeve Bearings (March 30, 2012)
A new series of 44 Frelon lined flanged sleeve bearings in inch and metric sizes from Quality Bearings and Components (QBC) are desi...

24 Igus DryLin R Bearings Utilized in Post-Plating Machine (April 25, 2011)
A machine used during the post-plating stage of a high-performance metal finishing process uses DryLin R linear plain bearings from igus ...

25 Deep Groove Ball Bearings Operate Smoothly, Quietly (July 23, 2008)
SKF Explorer deep groove ball bearings feature raceways and cage geometry that provide smooth, quiet operation, accuracy, speed, low fri...

26 SKF’s New Cylindrical Roller Bearings Extend Wind Turbine Gearbox Life (April 11, 2006)
New SKF high-capacity cylindrical roller bearings for wind turbine gearboxes have been engineered to promote longer gearbox service life...

27 Steel Bearings from MRC Designed for Harsh Corrosive Environments (April 16, 2006)
MRC’s new HNRC steel bearings are constructed from high nitrogen corrosion resistant steel and offer improved corrosion resistance a...

28 AST Bearings Introduces New Tapered Roller Bearing Line (April 29, 2006)
AST Bearings announces its high carbon chromium steel tapered roller bearings to complement its existing line of quality products. AS...

29 SKF’s New Cylindrical Roller Bearings Extend Gearbox Life (April 9, 2006)
New SKF high-capacity cylindrical roller bearings for wind turbine gearboxes have been engineered to promote longer gearbox service life...

30 SKF’s Toroidal Roller Bearings Accomodate Heavy Loads and Misalignment (March 14, 2006)
The SKF Carb torodial roller bearings serve as non-located bearing in large electric motors (125 Hp and above) with their capability to a...

31 NSK Introduces New Bearings (April 13, 2005)
[photo] NSK's new BGR Series of super precision angular contact bearings combines the benefits of SHX heat and seizure resistant stee...

32 New Support Bearings from Timken (April 20, 2005)
Timken has expanded its offering for machine tool applications to provide a complete line to Fafnir ball screw support bearings. The addi...

33 New Linear Bearings from The Precision Alliance (January 30, 2006)
The MONORACE Series of linear bearings from The Precision Alliance can carry payloads range from 50-5,000 lbs. over distances up to and e...

34 Messinger Bearings Awarded Chicago Gear Contract (January 11, 2007)
Messinger Bearings has been awarded a contract to provide 40 large bearings to Chicago Gear for use in eight Babcock & Wilcox coal pulver...

35 SKF’s Hybrid Bearings Insulate Against Stray Electric Currents (January 30, 2007)
SKF’s hybrid bearings with silicon nitride rolling elements and steel rings provide insulation against stray currents in large varia...

36 SKF Offers Specialty Coating for Bearings (January 21, 2008)
SKF has recently announced a patented NoWear coating application for bearings to promote longer life and increased machinery uptime. Acco...

37 Frelon Lined Linear Bearings from QBC Offer Load and Wear Rate Design Advantages (September 4, 2008)
An expanded line of linear ball bearings from Quality Bearings & Components are stocked in both U.S. and European standard specificat...

38 Emerson’s Bearings Capable of Enduring Harsh Conditions (March 4, 2010)
Sealmaster offers paver bearings designed to withstand abrasive paving conditions and asphalt materials. A four-barrier seal technology p...

39 QC Industries Offers Lube-for-Life Bearings (December 14, 2007)
QC Industries has replaced its standard bearings with lube-for-life versions featuring a permanent, micro-poly lubricant designed to meet...

40 SKF Rolling Bearings Minimize Maintenance Requirements (October 25, 2007)
Offered in a variety of sizes and types, SKF rolling bearings with integral seals provide solutions to protect against contaminants and r...

41 NKE Austria Manufactures 3,000 Types of Roller Bearings in New Assembly Plant (March 1, 2007)
NKE Austria introduced its new series of single row cylindrical roller bearings. According to NSK’s press releae, more than 3,00...

42 The Precision Alliance, PM Bearings Debut New Rotary Bearings (March 8, 2007)
PM Bearings and The Precision Alliance introduce the FMB Series of low profile, high precision rotary bearings, suitable for rotary posit...

43 Zero Maintenance Bearings Available for Schmidt Offset Couplings (October 4, 2010)
Zero maintenance bearings are now available as an option for Schmidt Offset couplings from Zero-Max. This new coupling feature eliminates...

44 Roller Bearings Key to Energy Efficiency (October 25, 2011)
Schaeffler Group Industrial’s efficient rolling bearings with optimized friction from the INA and FAG brands are a key component f...

45 Schaeffler Strengthens Deep Groove Ball Bearings Business (May 17, 2017)
Schaeffler is significantly expanding its standard rolling bearing business with FAG Generation C deep groove ball bearings through subst...

46 NKE Rolling Bearings Keep Motors and Generators Running (June 22, 2017)
Bearing manufacturer NKE Austria GmbH offers a wide range of rolling bearings for electrical machines. Particularly designed for motors a...

47 Drive Lines Combines Bearings and Profiles for Lifting Applications (July 6, 2017)
Combined bearings provide a cost-effective guide solution to lifting systems, platforms and cantilever loads. The system combines a radia...

48 KISSsoft 03/2017 Release Allows Users to Evaluate Reliability of Gear Units, Individual Gears and Rolling Bearings (August 23, 2017)
A function in KISSsoft Release 03/2017 enables you to evaluate the reliability of gear units, individual gears and rolling bearings. ...

49 SKF Destroys 15 Tons of Fake Bearings (February 22, 2017)
SKF has recently completed legal proceedings against a dealer of counterfeit bearings in Greece. Initiated in 2009, a total of 15 tons of...

50 SKF Upgrades Explorer Spherical Roller Bearings for Vibratory Applications (July 18, 2016)
Upgraded SKF Explorer spherical roller bearings for vibratory applications have been newly engineered to provide ideal performance and lo...

51 NKE and Fersa Bearings Form Strategic Alliance (January 26, 2016)
Fersa Bearings based in Zaragoza, Spain has acquired a 49 percent stake in Austrian bearings manufacturer NKE Austria GmbH. Both manufac...

52 Pacamor Kubar Estimates Life of Miniature and Instrument Ball Bearings (February 8, 2016)
Life" is the number of hours that a percentage of similar bearings have survived under an essentially identical set of operating con...

53 NKE Introduces Single Row Cylindrical Roller Bearings (April 29, 2016)
Bearing manufacturer NKE Austria GmbH presents its series of single row cylindrical roller bearings – a bearing type on which many ...

54 Regal Demonstrates Bearings, Gear Reducers and More at AGG1 (April 30, 2015)
Regal Power Transmission Solutions recently demonstrated its aggregate-duty bearings, gear reducers and life-cycle support services at AG...

55 LM76 Introduces Pegasus Series 1 Linear Bearings (September 1, 2017)
LM76 has developed corrosion resistant linear bearings. In space, deep under the sea, or in the harshest environments when there can be n...

56 SKF Explorer Bearings Include High-Performance Seal Option (March 23, 2017)
SKF is making its high performance RSH seal design available on a larger range of SKF Explorer deep groove ball bearings. The tried and t...

57 SKF Black Oxide Bearings Promote Reliability (June 11, 2014)
SKF black oxide bearings add a surface layer of protection to promote higher reliability and performance for wind turbines...

58 NKE Offers Rolling Bearings for Gearboxes (June 10, 2014)
NKE Austria offers rolling bearings for industrial gearboxes that meet the efficiency and reliability requirements of a wide range of sectors, such as general machinery, mining, material handling systems and heavy machinery...

59 C&U Americas Offers Hybrid Ceramic Ball Bearings (July 18, 2014)
C&U Americas, the North American subsidiary of The C&U Group, offers a wide range of hybrid ceramic ball bearings for electrical ...

60 Igus Extends Self-Aligning Bearings Line (January 31, 2014)
Plastic bearing expert Igus will be presenting their line of detectable self-aligning bearings for the food industry. The detectable bear...

61 SKF Introduces Carb Roller Bearings (January 7, 2014)
SKF Carb toroidal roller bearings introduce robust non-locating bearing solutions engineered to withstand the tough operating conditions ...

62 SKF Polymer-Type Bearings Improve Performance (November 16, 2007)
The new SKF polymer cages offer advanced thermal, friction and wear properties compared with conventional steel, polymer or brass counter...

63 PI Releases Magnetic Direct Drives and Air Bearings Catalog (June 9, 2016)
PI (Physik Instrumente) has released a new catalog of its magnetic direct drives and air bearing technology solutions, including actuator...

64 Timken Names Business Leaders for New Power Transmission and Bearings Group (August 28, 2007)
The Timken Company  today announced five leaders of the businesses within its new Bearings and Power Transmission Group. All five wi...

65 KISSsoft and SKF Collaborate on Rolling Bearings Data (May 24, 2016)
The new version of KISSsoft 03/2016 now contains the very latest data from the "Rolling Bearings" catalog. By cooperation betwe...

66 Motion Industries Launches Bearings Knowledge Website (April 5, 2016)
Motion Industries recently announced the launch of its new knowledge website: www.Bearings.com. Designed as an information hub, Bearings....

67 ASTM Publishes Standard for Hybrid Roller Bearings (August 19, 2009)
Increasing use of silicon nitride rollers in recent years has led to the development of ASTM F2094/F2094M, Specification for Silicon Nitr...

68 ISO Quality Certification Awarded to New Way Air Bearings (December 2, 2008)
New Way Air Bearings received an ISO 9001:2000 certification for its commitment to quality service standards. Independent auditing firm U...

69 Regal Power Transmission Offers Pump Drives, Bearings and Gear Reducers at AGG1 (March 21, 2016)
Regal Power Transmission Solutions introduces its new Durst modular hydraulic pump drive in Booth 1230 at AGG1, along with exhibits and d...

70 Pacamor Kubar Bearings Awarded Aircraft Bearings Certification from FAA (July 24, 2007)
Pacamor Kubar Bearings was awarded the Technical Standard  Order TSO-C149 Aircraft Bearings Certification from the Federal...

71 RBC Bearings Consolidates Offices (January 20, 2004)
RBC Bearings has combined all their offices into a single facility, located in Oxford, CT. According to the company's press releas...

72 Pacamor Kubar Bearings Receives Aerospace Certification (June 27, 2007)
Pacamor Kubar Bearings announced that the company was awarded the coveted AS9100:2004 Certification, the highest global standards fo...

73 Vesconite Polymer Bearings Cut Down on Maintenance Costs (June 8, 2017)
Greasing costs add up as the number of greasing points multiplies, the frequency of required greasing increases, and the number of machin...

74 Steinmeyer Introduces New Ball Bearings (January 9, 2007)
Steinmeyer Inc. announced an addition to its standard line of miniature precision screws ? the "world's smallest commercially availab...

75 LM76 Offers Bearings Selection Guide for OEMs and Maintenance Professionals (October 11, 2017)
Food processing and beverage washdown areas are unique environments that undergo harsh treatment from high pressure washers, steam, and a...

76 KISSsoft Calculations Include Splines, Springs and Plain Hydrodynamic Bearings (September 22, 2017)
KISSsoft's spline calculation now also includes a new function for calculating the strength of involute splined joints according to A...

77 PI Releases Tilt Stage for Rotary Air Bearings (July 10, 2017)
PI (Physik Instrumente) introduces the A-60x MTT, stainless steel multi-axis top that combines with its offerings of PIglide rotary air b...

78 2010 Metal Powder Testing and Bearings Standards Released (January 5, 2010)
The 2010 editions of Standard Test Methods for Metal Powders and Powder Metallurgy (PM) Products, and Standard 35, Materials Standards fo...

79 BC Bearings Group Acquires Transmission Supplies Ltd. (January 17, 2007)
BC Bearing Engineers Ltd. and Transmission Supplies (Southern Alberta) Ltd. of Lethbridge, Alberta, announced the signing of an interim a...

80 Pacamor Kubar Bearings Wins Government Supplier Award (July 10, 2007)
Pacamor Kubar Bearings (PKB), was honored by the Defense Supply Center Richmond as one of the government's best suppliers at an Autom...

81 SKF Develops Online Heater Selection Tool for Bearings (June 14, 2016)
The new SKF online heater selection tool introduces an easy, convenient and highly accessible resource to make the right pick among heate...

82 RBC Bearings Buys U.S. Bearing (March 15, 2005)
RBC Bearings Inc. completed an agreeement with Networks Electronics Cor. for the purchase of U.S. Bearings. "This acquisition comes at...

83 Rexnord Launches IIoT Smart Mounted Spherical Roller Bearings (March 7, 2017)
Designed as an off-the-shelf solution for quick turnaround needs, Rexnord recently launched its new Industrial Internet of Things (IIoT) ...

84 Pacamor Kubar Bearings Enhanced for Dental Handpieces (February 20, 2005)
Pacamor Kubar Bearings has introduced new product enhancements that extend bearing life in high and low speed dental and surgical handpie...

85 Papers Invited for Rolling Element Bearings Symposium (May 11, 2010)
The 2011 ASTM International Symposium on Roller Element Bearings is accepting papers. The symposium is sponsored by the ASTM Internationa...

86 Revolvo's Water Wheel Bearings Improve Efficiency and Reliability (December 17, 2014)
For any power generation project, efficiency and reliability are two very important characteristics. So, when a 2-star Michelin restauran...

87 Kilian Bearings Withstand Washdown Environments (October 20, 2011)
Kilian Manufacturing, Syracuse, New York, has developed a line of ball bearing housed units for the tough washdown conditions in food pro...

88 Napoleon Announces Aerospace Bearings Offerings (September 22, 2014)
The ISO9001:2008 and AS9100C certified Napoleon Engineering Services (NES) recently announced the company’s specially tailored bear...

89 SKF DryLube Bearings Designed for Extreme Temperature Environments (August 3, 2011)
SKF DryLube Bearings eliminate any need for grease relubrication and are designed to perform reliably and virtually maintenance-free over...

90 NKE Bearings Offer Versatile Solutions (June 10, 2011)
Bearing manufacturer NKE recently introduced bearing solutions for industrial gearboxes at this year's Motion, Drive and Automation F...

91 NSK Bearings in Electric Motors (January 9, 2015)
As the development of more efficient electric motors continues to keep pace with upcoming regulations, it is important to ensure that all...

92 Thomson Bearings Challenge Food Processing Applications (May 2, 2011)
Thomson recently introduced Food Grade FluoroNyliner Bushing Bearings featuring a non-magnetic 303 Stainless Steel corrosion resistant sl...

93 Baldor Bearings Offer Solutions to Forest Industry (December 12, 2011)
Roseburg Forest Products of Roseburg, Oregon, is one of the largest privately held forest products companies in the United States. Establ...

94 Miller Bearings Joins EPTDA (February 8, 2012)
The European Power Transmission Distributors Association (EPTDA), the leading European organization for the mechanical power transmission...

95 Baldor Introduces Dodge Type EXL Bearings (September 5, 2012)
Baldor Electric Company introduces the new Dodge Type EXL tapered roller bearing that provides both misalignment and expansion capability...

96 Pacamor Kubar Bearings Expands Certifications (November 1, 2012)
Pacamor Kubar Bearings (PKB) recently announced that they have successfully completed recertification to ISO 9001:2008 and AS9100:2009. T...

97 SKF ConCentra SYAF Roller Bearings Offer Unique Mounting System (August 24, 2012)
New SKF ConCentra SYAF roller bearing units introduce ready-to-mount and highly reliable solutions for conveyors exposed to harsh operati...

98 Chris Lake Rejoins Pacamor Kubar Bearings (May 1, 2012)
Pacamor Kubar Bearings (PKB) recently announced that Chris Lake has rejoined the company as quality manager. Lake previously worked ...

99 OE Bearings Partners with Revolvo (February 15, 2012)
OE Bearings has established a successful partnership with major U.K. SRB manufacturer, Revolvo. The success of the partnership is based ...

100 NSK Offers Sleeve Bearings or Bushings (June 26, 2014)
NSK has introduced a range of sleeves, aimed mainly at OEMs and other volume users of sleeves or lubricated bushings used in equipment such as excavator buckets, backhoe linkages and conveyors...

101 Metcar Introduces Self-Lubricating, Carbon-Graphite Bearings For Louver Dampers (January 21, 2015)
Metallized Carbon Corporation, a manufacturer of oil-free, self-lubricating, carbon-graphite materials for severe service applications, r...

102 Hartford Introduces Drawn Cup Needle Bearings (March 16, 2011)
Hartford Technologies, a global manufacturer of engineered bearing products for OEM and other high-volume applications, has introduced a ...

103 ASTM Proposes X-Ray Diffraction for Stress Measurement of Aerospace Bearings (September 2, 2010)
X-ray diffraction has become a popular means of residual stress measurement in the aerospace materials field over the last 50 years. A pr...

104 Timken Launches 6000 Series Ball Bearings in North America (December 18, 2015)
Timken recently launched its 6000 series deep groove ball bearing line in North America, which completes the compan...

105 Boston Gear Mounted Bearings and Universal Joints Added to Stainless Steel Food Processing Line (December 14, 2015)
Boston Gear has added new mounted bearing designs and universal joints to its line of stainless steel shaft accessories designed for supe...

106 Papers Invited for Rolling Element Bearings Symposium (August 6, 2010)
The 2011 ASTM International Symposium on Roller Element Bearings is accepting papers. The symposium is sponsored by the ASTM Internationa...

107 Revolvo Bearings Cut Downtime in Food Processing (November 27, 2013)
With supermarkets continuously driving down prices, despite rising inflation, food production is perhaps one of the most ultra-competitiv...

108 Pacamor Kubar Bearings Welcomes Back Dwight Calkins (March 26, 2010)
Dwight Calkins has returned to Pacamor Kubar Bearings (PKB) engineering department. After holding several positions at PKB, including QC ...

109 Rotary Encoder Measures Speed without Ball Bearings (April 26, 2010)
The MNI40 incremental rotary encoder from Pepperl+Fuchs is a magnetic, non-contact encoder with advanced diagnostics for a range of appli...

110 SKF Showcases Explorer Spherical Roller Bearings and Other Products at PTC Asia 2015 (November 10, 2015)
SKF recently presented a selection of its products and solutions at PTC Asia 2015 in Shanghai, China, from Oct. 27-30.This year, SKF demo...

111 Pacamor Kubar Bearings Purchased by Two Company Executives (August 20, 2015)
Pacamor Kubar Bearings (PKB) was recently been purchased by Edward M. Osta, the company's current executive vice president, and Steph...

112 Misumi Expands Bearings Catalog (February 4, 2011)
Misumi USA, Inc., a provider of fixed and configurable mechanical components for machine building and factory automation systems, recentl...

113 AST Bearings Achieves Partner-Level Status with John Deere (March 15, 2011)
AST Bearings, an international supplier of bearing products and services, has earned recognition as a Partner-level supplier for 2010 and...

114 NSK Low Torque Bearings Improve Energy Efficiency in MRO Sector (February 13, 2015)
NSK is known across the world for its class leading reliability and long bearing life, as well as its economic and environmental credenti...

115 Baldor Introduces Steel-Housed Roller Bearings (December 7, 2010)
Baldor Electric Company recently introduced the Dodge Steel-Housed S-2000 HD spherical roller bearing. The new bearing features an econom...

116 NKE Agri Units Make Agricultural Rolling Bearings Simple (June 12, 2015)
NKE recently introduced all-in-one bearing units designed for use in agricultural machines that require a rotating union between a disc-s...

117 Medical Device OEMs Turn to Plastic Bearings (December 2, 2010)
Bearings have evolved over the last century just as medical device technology has. Sintered bronze bushings first appeared in 1930. These...

118 Miller Bearings Welcomes President, Board Chairman (February 20, 2010)
The Board of Miller Bearings, Inc. elected William "Bill" Bierbach (pictured) as president, and David Morell was elected as Cha...