# bearings

Precision Line Shafts

In the simplest definition, a line shaft is the rotating shaft part of a system of mechanical couplings between the power source and the machines that do work. Line shafts, also known as connecting shafts, jack shafts, or link shafts, are used to span long distances between rotating components. Conventional solutions typically involved two standard flexible couplings and solid shafting, requiring intermediate pillow block bearings for support. Newer style precision line shafts can be operated at lengths of up to 6m without any intermediate support required. White Paper Courtesy of DieQua Corporation
www.powertransmission.com/sc/diequa-precision-line-shafts/

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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.

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.

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).

Heat generation in bearings is manifested by the power losses of the transmission. Because of the rise in temperature due to heat generation, the appearance of dilatation adversely affects the bearings' geometrical characteristics.

Thrust cone bearings are an elegant option to handle the axial forces generated by the torque transmission in helical-toothed gear stages. They have proven as an efficient and reliable bearing concept for integrally geared compressors but are nearly unknown in other fields of gearbox engineering. The presented investigations consider three aspects which appear relevant to extend the field of possible applications for thrust cones towards gearboxes constructed with roller bearings.

Oh my. It's been another busy month here at Power Transmission Engineering, and we have another full issue for you. This time around we have a focus on bearings, with plenty of great examples of applications and technology from the world's leading manufacturers. Of course, bearings are essential to power transmission and a core subject we cover every issue. But when it's the focus, we like to attack the subject from multiple different angles.

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

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.

The main function of rolling bearings is to support load and transmit rotational movement with minimum energy loss. In order to achieve this, bearings are manufactured with particularly good quality fatigue resistance materials, proper design and tight manufacturing tolerances. Particular emphasis is put in both the macro, and micro geometry of the working shapes and surfaces of the raceways. Rolling bearings come in many types and sizes as ball and roller bearings for radial and thrust loads.

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.

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?

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.

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:

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)

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.

In this special advertising section, Power Transmission Engineering features several of the world's leading bearings suppliers and their latest technology.

As NVH technology advances, so do the tools that allow engineers to study, test, and manufacture bearings capable of delivering high-performance and quality.

For a maintenance crew, it is important to know which bearings need re-lubrication and make sure they are lubricating those bearings. The bearings can be lubricated manually or by automatic lubrication systems. This article will review each method and discover its pros and cons.

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

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.

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

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.

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.

What are the best methods to adjust tapered roller bearings?

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.

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.

When your \$100 âœRolexâ 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.

Th e signing of a contract for more than 5,000 sets of SKFâ™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 Companyâ™s (NGC) line of gearboxes for wind generation applications.

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.

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 arenâ™t exactly areas where customers buy bearings in bulk.

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.

Special tools and bearing modifications can make removal and installation much safer and easier for plant technicians.

Engineers typically learn that the bearing L10 life can be estimated using the so called âœC/P methodâ â” or the âœbasic rating lifeâ of the bearing, a method rooted in the 1940s. Major developments have since led to the âœmodified rating life,â 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 â” 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 â” use of these improved calculation methods are not practiced by all engineers. Indeed â” many continue referring to the old model as a way of seeking compliance with existing, established practices.

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.

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.

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.

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.

Counterfeits continue to vex big-name suppliers

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

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

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.

Rheology models express the way tribological conditions translate to shear stress of the lubricant and friction force on the interacting surfaces. Due to the complexity of the lubricant rheology, the friction coefficient is usually obtained experimentally either under the same operating conditions or by curve fitting in a properly chosen friction map. The current study aims at determining the rheological parameters of a lubricant based on friction measurements carried out on a commercial, readily available ball-on-disc machine.

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.

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.

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

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.

An explanation of the detailed calculation of rolling bearings in the FVA-Workbench based on consideration of the profiling of roller bearings.

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.

The ABMA, BSA and PTDA help keep things rolling.

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.

Good machinery can last a lifetime. But, replacement parts for older equipment may be near impossible to find. So, what do you do when you're looking to replace hard-to-find bearings and related parts for older machines?

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.

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

Thereâ™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, weâ™ve got you covered.

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

Special advertising section with a focus on bearings.

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.

igus bearings solve undersea issues for the marine vehicle industry.

Radial spherical plain bearings play a key role in off highway equipment and vehicles

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.

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.

Finbin implements sustainable waste containers with igus bearings

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

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 surfaceâ“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 surfaceâ“subsurface competing fatigue mechanisms taking place in rolling bearings is discussed with reference to endurance testing data.

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.

Iâ™m building a custom gearbox with 7075 T-6 spur gears, and Iâ™m concerned that aluminum flakes will enter the races on the roller bearings (SKF 2307) and cause premature failure. So my question is â” should I place an oil seal on the shaft first to protect the bearing â” 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? Iâ™m confused and could use your expertise, please.

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.

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.

The automotive industry is shifting for everyone, bearings manufacturers included. Here's what you need to know to make sure you're shifting with it.

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.

A discussion of the evolution of condition monitoring for bearings and the upcoming introduction of company's next-generation condition monitoring platform.

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

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.

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.

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

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.

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?

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

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

Lubrication plays a vital role in the performance and life of rolling element bearings, yet its significance is often underestimated. The most important task of the lubricant is to separate parts moving relative to one another (balls or rollers and raceways) in order to minimize friction and prevent wear. A lubricant that is designed for specific operating conditions will provide a load bearing wear protective film.

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 rollâ™s shaft.

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.

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

Wind turbines are getting bigger than ever, and the manufacturing infrastructure that facilitates their construction needs to start growing with them.

What is the general consensus on the current quality and viability of global bearing sources for the power transmission industry?

The complete Industry News section from the March 2020 issue of Power Transmission Engineering

Bearings Manufacturers Support Essential Manufacturing by Staying Open through the COVID-19 Pandemic

The latest updates in software for bearing design.

The complete Product News section from the April 2021 issue of Power Transmission Engineering.

One of the largest components manufactured by Schaeffler last year was a double-row tapered roller bearing featuring an outer diameter measuring 3.6 meters and a weight just over nine tons.

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.

The complete Product News section from the September 2020 issue of Power Transmission Engineering.

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

Whether you design, build or maintain industrial equipment, it is likely you have encountered many types of bearing grease over the years. Lubrication plays a crucial role in virtually all operations, and certain key characteristics allow grease to perform its job better in demanding applications.

What trends do you see in bearing materials and coatings that will benefit the power transmission industry?

FVA Software bundles the results and knowledge from hundreds of research projects in one platform.

The complete Industry News section from the September 2021 issue of Power Transmission Engineering

No one likes paying too much for anything. Everyone wants to get a better deal. That's why you shop around before buying a new car. That's why you look at sale advertisements before buying a new refrigerator or big screen tv. The bigger the purchase, the more you want to compare prices.

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

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. Hereâ™s how:

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

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

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 bearingâ”and bearing technologyâ”for the application.

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

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

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.

IFPE offers the right balance of technology and education.

Collaboration moves bearing modeling and simulation software forward

110 PT Extras (April 2013)

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

111 Industry News (April 2011)

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

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

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.

Student research project at Purdue could revolutionize predictive bearing failure.

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.

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

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

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.

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. Itâ™s apparent that the revitalization of manufacturing, both here and abroad, will center on energy technology.

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?

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&#8217;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.

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

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.

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.

Experienced operators can often tell if a machine is not working properly, on the basis that it does not â˜sound right.â™ The same principle can be applied â” using modern electronics â” 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.

Eddy Swiben, branch manager at BDI Canada, explains how to problem solve on an automatic cutter for tissue rolls. âœThis is a very major paper tissue manufacturer that sells paper tissue rolls all over America.â 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.

127 Product News (April 2017)

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

128 PT Extras (September 2014)

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

Latest News from around the industry.

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.

131 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.

Machine and equipment manufacturers today are feeling more pressure than ever to reduce costs without sacrificing machine performance â” 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. â” the elimination of bearing lubricant.

BEARINGS BASICS Q&A: IN CASE YOU DIDNâ™T KNOWâ¦

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

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 SKFâ™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).

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.

Latest news from around the Industry

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 BSAâ™s Certified Bearing Specialists.

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

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.

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

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

143 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.

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.

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

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.

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

Does Moore's Law apply to machine elements such as gears, bearings and mechanical components?

Gears and bearings can only be arranged so many ways, after all. You'd think by now that we'd have discovered every possible way to make mechanical devices as strong and efficient as possible.

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.

Components like motors, bearings and drives are subject to harsh environments on Earth, but they must be at the top of their game to enjoy space travel. Recent applications from Maxon Motors (Return to Mars) and the University of Michigan (Robotic Legs) illustrate the incredible requirements it takes to handle applications in space and how these components can be utilized here on Earth.

Manufacturers are awesome. Over the past month, we've talked to a lot of manufacturers of gears, bearings, motors, gearboxes, couplings and other mechanical power transmission components. Despite the challenges brought about by the COVID-19 pandemic and the current economic crisis, they've been universally positive and remarkably confident about their current operations and ability to continue through the crisis and after.

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.

Most of us want to just instinctively squeeze a belt between a pair of pulleys to test the belt tension. What is not as instinctive is just how much force such a procedure can put on the shaft -- often significantly past the manufacturer's rated limits for small motors. This can cause damage to both the shaft and the bearings.

While metal-to-plastic parts conversion actually began way back in the Fabulous Fifties, think toys, household products, etc., it is only in more recent years that plastic conversion has gained a firm foothold in the more strength- and lifetime-demanding applications such as aerospace, under-the-hood automotive, motors, valves, bearings and, as they say, much more.

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.

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

158 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.

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 toolsâ”-ball bars, grid encoders displacement lasers, etc.â”-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.

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

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

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...

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...

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.

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.

Our theme for 2016 is âœEngineering Smart.â 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.

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.

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.

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.

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.

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 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...

3 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 ...

4 SKF Develops New Range of High Precision Bearings (March 10, 2021)
SKF has created a range of high precision bearings based on proven bearings technology specifically suitable for use in driven tool appli...

5 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...

6 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...

7 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...

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 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...

10 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 ...

11 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...

12 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...

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 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...

15 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...

16 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...

17 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 ...

18 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...

19 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...

20 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...

21 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...

22 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. ...

23 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...

24 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...

25 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...

26 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...

27 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...

28 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...

29 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 ...

30 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...

31 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...

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

33 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...

34 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...

35 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...

36 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 ...

37 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...

38 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 ...

39 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.&...

40 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,...

41 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...

42 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...

43 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...

44 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...

45 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...

46 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...

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 IKO Rotary Bearings Help Roll-Formed Parts Take Shape (September 24, 2020)
When it comes to roll forming equipment, rotary bearings are just as essential to the machine as any of the feeding, cutting and stamping...

49 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...

50 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...

51 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...

52 Cortec Offers Cutting Fluid for Bearings (August 24, 2020)
Any bearings manufacturer who has experienced corrosion on his or her goods knows how critical proper protection is to avoid later delays...

53 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...

54 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...

55 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...

56 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...

57 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...

58 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...

59 Vesconite Bearings Abrasion Resistance Helps Palm Oil Producer (October 1, 2021)
Vesconite’s Hitemp 150 hangar bearings have been installed at a palm oil processing factory in Cameroon, Central Africa.This follow...

60 SKF Extends Range of Large Bearings for Roller Presses (October 27, 2021)
SKF has extended its range of large bearings for roller presses, with a sealed version that prolongs service life.Its Explorer spherical ...

61 SMT Announces Bearings in MASTA Webinar (November 5, 2021)
SMT’s November webinar discusses the implementation of bearings in MASTA and aims to give an overview of methodology along with ava...

62 NTN Releases Ceramic Ball Bearings for Electric Motor Applications (November 17, 2021)
NTN Bearing Corporation of America is pleased to announce ceramic ball bearings for electric motor applications as its latest product off...

63 Trelleborg Expands Online Store with Seals and Bearings for Marine Applications (July 23, 2021)
Trelleborg Sealing Solutions expands its online store to include Seals-Shop Marine, which makes seals and bearings for the marine industr...

64 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...

65 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...

66 SKF Updates Bearings App (March 26, 2021)
SKF has updated the app that gives users instant information on super-precision bearings. Super-precision manager app allows users to sca...

67 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...

68 Igus Offers Line of Polymer Spherical Bearings (November 25, 2019)
Pillow blocks and fixed flange bearings need constant lubrication and maintenance to combat heavy dirt accumulation and dust. igus has de...

69 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...

70 LM76 Offers High-Precision, Self-Lubricating Bearings (May 21, 2018)
Available off-the-shelf, cylindrical, self lubricating, sintered bronze bearings from LM76 feature high precision (e.g +2 μ to +12 &...

71 Daimler Germany Selects Fersa Bearings as Official Supplier (March 14, 2019)
Fersa Bearings, S.A. has signed an agreement with the automotive giant Daimler to become an official supplier of bearings for the axles o...

72 Bearings Limited Puts Independent Distributors First with IDC-USA (April 17, 2018)
Bearings Limited has provided, through distribution, a full line of bearings and power transmission products for over 70 years. With a ...

73 KISSsoft Redefines Plain Bearings in Turbo Drives (September 7, 2018)
For shafts with plain bearings, the bearing type “Plain Bearing” can now be redefined. This is especially important for turbo...

74 IMTS Preview: Kashima Bearings (August 2, 2018)
Anticorrosive, chemical resistant, nonmagnetic and lubrication-free, Kashima plastic bearings (Booth #134730) are uniquely designed to me...

75 Timken Deep Groove Ball Bearings Keep Equipment Operating Smoothly (November 22, 2017)
A full range of metric deep groove ball bearings is now available from The Timken Company. The portfolio includes standard, thin section,...

76 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...

77 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...

78 SKF Introduces New Life Model for Hybrid Bearings (June 28, 2019)
SKF has unveiled a pioneering model that, for the first time, enables the working life of hybrid bearings to be determined more realistic...

79 ABB Launches Safety Mount Spherical Roller Bearings (July 5, 2019)
ABB has launched Dodge Safety Mount spherical roller bearings with a built-in patented locking mechanism that reduces installation time b...

80 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...

81 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...

82 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...

83 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...

84 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...

85 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...

86 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...

87 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...

88 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 ...

89 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...

90 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...

91 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...

92 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...

93 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...

94 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 ...

95 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...

96 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...

97 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...

98 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...

99 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...

100 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...

101 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...

102 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...

103 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...

104 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...

105 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...

106 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...

107 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...

108 LM76 Releases Ceramic Radial Ball Bearings (September 6, 2019)
LM76 has announced the release of their new line of Radial Ball Bearings featuring ZrO2 (Zirconia) Ceramic balls.  To Complement LM7...

109 SKF Introduces Optical Sensing Technology for Bearings (June 12, 2019)
SKF’s new sensing technology takes monitoring to the next level, providing engineers with new insights into machine performance. SK...

110 Regal's Sealmaster PN Gold Bearings Receive IP69K Certification (December 4, 2019)
Regal Beloit Corporation, a leading manufacturer of electric motors, electrical motion controls, power generation and power transmission ...

111 BCA Bearings Wins Auto Care 2019 Automotive Communication Award (December 5, 2019)
NTN, the parent company of BCA Bearings, is pleased to announce the award of a 2019 Automotive Communication Award by the Women in Auto C...

112 SKF Induction Heater Makes Hot-Mounting Bearings Faster and Safer (December 17, 2019)
The TWIM 15 induction heater has been designed to simplify the hot-mounting process. Alberto Herrera, product development manager at SK...

113 Regal Introduces Klamploc Adapter Lock for Sealmaster Spherical Bearings (December 12, 2019)
Regal Beloit Corporation has announced the release of the new Klamploc adapter lock for Sealmaster mounted unitized spherical roller bear...

114 JW Winco Expands Range of Rod End Bearings (February 27, 2019)
JW Winco, Inc. now has available an expanded range of Rod End Bearings, including GN 648.1/GN 648.2 Steel Zinc-Plated, Tapped Type or wit...

115 Fersa Bearings Acquires 100 Percent of NKE Austria (November 27, 2018)
Fersa Bearings S.A. made the purchase of the Austrian company NKE Austria GmbH official on October 19 2018, at a ceremony held in the cit...

116 QBC Introduces BETEX Cone Heater for Bearings (December 21, 2017)
Quality Bearings & Components, a distributor of the world’s leading bearing manufacturers and bearing maintenance equipment int...

117 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...

118 Cooper Roller Bearings Becomes SKF Cooper Split Bearings (January 24, 2018)
SKF acquired Cooper Roller Bearings Co Ltd. in 2013 as part of the US-based Kaydon Corporation, Cooper's parent company at the time. ...

119 NKE Prepares to Meet Future Challenges in Bearings Market (February 16, 2018)
Based in the Austrian city of Steyr, bearing manufacturer NKE Austria GmbH has been part of the Fersa Group since January 2016. The gro...

120 Fenner Drives Acquires National Bearings Company (March 8, 2018)
Fenner has acquired the U.S.-based National Bearings Company. Based in Lancaster, Pennsylvania, National Bearings Company manufactures cu...

121 Bower Bearings Launches Wheel-End Kits for Heavy-Duty Applications (February 6, 2020)
NTN, the parent company of Bower Bearings, is pleased to announce the addition of Pre-Adjusted Commercial Vehicle Wheel-End Kits to its h...

122 Igus Bearings Save Costs and Machine Maintenance for Surfing Simulator (March 16, 2020)
A company in Brazil that designs fitness training equipment that simulates the movements of a surfboard reduced costs by 70 percent and m...

123 Manus Award Honors Creative Use of Plain Bearings (May 17, 2021)
For the first time, the manus award, a joint initiative by Igus, a motion plastics specialist, recognizes four contestants. The prize sho...

124 AD Hosts Bearings and Power Transmission Virtual Meeting (May 13, 2021)
AD hosted its 2021 Bearings & Power Transmission Division Virtual North American Meeting, from March 29 – April 1. The virtual ...

125 SIC Marking Combats Counterfeit Bearings (June 28, 2021)
The bearing market has been facing a scourge of counterfeiting for many years leading to huge consequences. No less than 5.4 million jobs...

126 RBC Bearings Set to Purchase ABB Dodge (August 9, 2021)
RBC Bearings Incorporated has announced that it has entered into a definitive agreement to acquire the Dodge mechanical power transmissio...

127 NTN Announces 25 New BCA Bearings Products (December 14, 2021)
NTN, the parent company of BCA Bearings, has announced the addition of 25 new product SKUs to the BCA aftermarket product line. BCA&rsquo...

128 LM76 Introduces Wear-Resistant Cam Follower Bearings (January 8, 2021)
LM76 has introduced their RINO Series of FDA/USDA compliant Cam Follower Bearings. Available in 12 sizes these all new cam follower beari...

129 WBA Leads Fight Against Counterfeit Bearings with Mobile App (December 16, 2020)
The World Bearing Association (WBA) a non-profit organization serving the public interest, announces the release of a new app, the WBA Be...

130 AD's Bearings and Power Transmission Division Holds First Virtual, Member-Only Network Meeting (October 15, 2020)
AD’s Bearings & Power Transmission Division hosted its first virtual member-only network meeting Sep. 22, 2020, with over 90 me...

131 KML Stand-Out Mounted Bearings Offer Sanitation Protection to Food and Beverage Applications (May 22, 2020)
KML Bearing USA meets the need for greater sanitation in food and beverage manufacturing with its Stand-Out Mounted Bearings that incorpo...

132 Alpine Bearing Partners with NTN on Bearings for Machine Tool Market (October 26, 2020)
Alpine Bearing, New England’s largest ball bearing distributor, has entered an agreement as a U.S.-based channel partner for NTN fo...

133 Isotech Offers Slew Rings and Turntable Bearings for Heavy-Duty Applications (November 9, 2020)
The rugged ball-bearing and crossed roller slewing rings from Isotech are characterized by their large diameter and large bores with only...

134 AD Announces New Leadership for Bearings and Power Transmission Division (December 4, 2020)
AD has named Darin Davenport as vice president of its Bearings and Power Transmission Division. Davenport most recently served as preside...

135 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...

136 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...

137 Thordon Bearings Introduces Water Lubricated Shaft Seal (February 14, 2022)
Thordon Bearings BlueWater Seal is a new propeller shaft seal with a unique Safe Return to Port (SRTP) design that specifically meets com...

138 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...

139 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...

140 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...

141 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...

142 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...

143 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...

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

145 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...

146 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 ...

147 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 ...

148 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...

149 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...

150 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...

151 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...

152 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...

153 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...

154 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) ...

155 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...

156 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....

157 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...

158 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...

159 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...

160 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...

161 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...

162 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...

163 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...