The Modern Development of AntiFriction Bearings

Friction

The frictionless characteristics of ball and roller bearings are well known.  While of little practical use in the actual bearing design, perhaps, it is interesting to compare the abilities of various types of bearings as measured by the coefficient of friction.

One of the outstanding differences between antifriction bearings and plain bearings, for example, is that the antifriction type will maintain an almost uniformly low coefficient of friction during wide variations in loading, whereas the plain bearing will under the same conditions exhibit a coefficient which varies greatly.

Another fact it is well to  remember is that during non-operation of plain bearings the load or weight of parts generally forces out the oil, destroying the film on which its operating effectiveness rests, and since there is no rotation to  build it up again, this leads to metal-to –metal contact and high starting friction in plain bearing machinery.  Further, this momentary sliding contact between the metals in the plain bearing produces probably the greater portion of the total wear in a plain journal, as observed after a period of operation.

The friction characteristics of plain bearings are largely influenced by variation in the lubricating medium, and while anti-friction bearings do require a careful selection of lubricant, they are not nearly so sensitive to changes in type of characteristics.

As contrasted with the plain journal in which the oil is expelled during periods of inoperation, the anti-friction bearing presents rolling elements (either balls or rollers) between the load-carrying surfaces at all time, and therefore does not suffer from a similar action.  The absence of this sliding friction at the start of operation has the effect of reducing the power required to start machines, and where a number of motors is involved this may be an item of considerable interest to the user.

Reliability

Anti-friction bearings could not have gained the widespread acceptance they have in the past few years without embodying the utmost reliability.  Airplanes, railway cars of conventional and high-speed design, steel mill equipment, pulp and paper machinery, a great variety of machine tools, an almost unbelievable amount of textile machinery, mining equipment, delicate apparatus such as gyroscopes, signal relays, train control equipment – indeed an almost endless list of successful applications can be credited to anti-friction bearings.  Coupled with this, the nationwide facilities of a great number of bearing companies make ball bearings readily available items.  Replacement or rebabbitting of plain journals gives way to long, carefree service, and at economical costs.

Modern production and specialization has made almost every unit of apparatus vital in the accomplishment of a definite purpose, and each unit depending upon another must perform exactly as advertised.  Reliability, therefore, is not a quality to be considered only in connection with a given piece or type of apparatus, but rather something that spreads over all industry.  Throughout the processing of almost any manufactured article, or even raw material, the effect of anti-friction bearings can be observed today.  In the deepest mines ball and roller bearings are permitting high efficiency and low cost.  In the actual obtaining, handling, conveying, and delivery of raw material in steel mills almost every process depends to some extent on anti-friction bearings.  In transportation in the air, on land, and on sea, they are contributing to the prompt and efficient dispatch of materials to thousands of manufacturing plants where more efficient machinery is delivering products of an endless variety to their respective fields of usefulness.  In the textile field utilization of anti-friction bearings has been carried out to a remarkable degree.  Millions of automobiles are creating records of economical performance from advantages obtained with anit-friction bearings.  In power transmission, in the ventilating industry, in the paper industry and in many other specialized fields they are outstanding in their performance.

What Are Tapered Roller Bearings?

Tapered roller bearings comprise of an outer ring, an inner ring, rollers, and a cage profiled to ensure even distribution of the load. At low to intermediate speeds, they have high axial and radial load capacities.

Tapered Roller Bearings Design

You can find tapered roller bearings in single-row, two-row, and four-row designs.

For the single-row bearings, thrust capacity is around 60 percent of the radial capacity.

The two-row bearings can handle thrust loads in both directions and have a higher radial load capacity.

You can configure the rollers in such a way that contact lines between the race and roller diverges or converges towards the axis of rotation. The diverging two-row bearings increase the rigidity of the shaft mounting while the converging double-row bearings do not.

The two-row bearings also have other configurations including two outer rings and a single inner ring as well as a single outer ring and two inner rings.

Four-row bearings consist of four rows of alternating diverging and converging rollers.

Materials Used In Tapered Roller Bearings

The most common materials used in the manufacture of tapered roller bearings are low-carbon steels and alloy steels. Some applications do require use of through-hardened or case-hardened, high-carbon, bearing-quality steel.

The high-carbon steel does not require carburizing and are either through-hardened via conventional heating methods or case-hardened via induction heating.

When low-carbon, carburized steel is used, the carbon is introduced once the roller bearings are machined to a depth sufficient to produce a hardened case with the ability to sustain bearing loads.

The inclusion of alloys and carbon ensured the proper combination of a ductile and tough core as well as a hard case resistant to fatigue.

Choosing Tapered Roller Bearings

When choosing tapered roller bearings, the outside diameter (OD) and bore size are important considerations.

The smallest dimension of the bearing is the bore size. The outside diameter includes the housing of the bearing but not the flange. Other important considerations include the static axial load, rated speed, static radial load, dynamic radial load, dynamic axial load, and overall width.

The static radial and static axial loads are, respectively, the maximum radial and axial loads that a bearing can withstand without deforming permanently.

The dynamic radial load and dynamic axial loads are, respectively, the calculated radial and axial loads under which a group of similar bearings that have stationary outer rings can withstand for a rating life of a million rotations of the inner ring.

Hopefully, this gives you some insight into exactly what tapered roller bearings are, the important considerations when buying, and the types available.

How To Introduces Pre-configured Geared Bearing Solution

Geared Bearing solutions based on their innovative Roller Pinion System (RPS). The new Geared Bearing package comes complete with a zero backlash gear mounted and dialed in on a precision grade high capacity bearing.Geared Bearings are available in a wide variety of sizes and gear ratios, and preconfigured for fit, form and function, for easy integration into any precision rotary motion application.

New Geared Bearing Product Selector tool makes it quick and easy to select the gear needed. Customers simply adjust online sliders for torque, gear O.D. size, accuracy and gear ratio requirements. The tool instantly shows all the options that fit. OEMs also have easy access to STEP files and specifications. It holds bearings in inventory and gear raw material on hand, so bearings are available for fast delivery.

Geared Bearings offer unmatched mechanical system capabilities, including:

•     High Indexing Precision: As low as ± 30 ArcSec with repeatability as low as ± 5.0 ArcSec
•     Zero Backlash: Based on Nexen’s RPS technology, the Geared Bearing offers a rigid, zero backlash system
•     High Output Load Capacity: Supported by precision grade, high load capacity cross-roller bearing
•     High Speed: Handles speeds up to 632 RPM

About MBP

MBP BEARING is eminent manufacturer of a range of high-quality anti-friction Bearings. Our company maintains high standards of efficiency and assure clients that the offered products are highly dependable. For us, quality has always been an integral part and culture of our organization and stringent efforts are made to ensure that the customers get value for their money.

Bearings Exporters and manufacturer India

Taper Roller Bearings Supplier India

Deep Groove Ball Bearings india

Cylindrical Roller Bearings Manufacturers India

Spherical Roller Bearings Manufacturer

Needle Roller Bearings manufacturers

Indian Universal Joints manufacturing

Company Name: MBP BEARINGS PVT. LTD.
Name: Amit Padia
Cell: 9350186486/9821488063
Phone: 011-27491392
Address: 902/290, SHALIMAR INDUSTRIAL AREA, NEAR LANE NO. 3, MAIN ROAD, Delhi - 110088, India
Website: http://www.mbp-bearings.com

Special Bearing Solutions for Demanding Applications

special bearings for demanding applications such as mechanical and electrical drive systems, pumps and compressors as well as agricultural machinery.A new development engineering department where special bearing solutions are being developed in close cooperation with the customers.

Bearings demanding specifications:

Bearings are highly important components and must meet extremely demanding specifications.For applications such as agricultural machines, mechanical and electrical drive systems, pumps and compressors, but also rail vehicles and wind power plants offers bearing types such as cylindrical roller bearings, spherical and taper roller bearings, angular contact bearings, deep groove ball bearings, four point contact ball bearings as well as custom-made special bearings. All bearings are subject to stringent quality requirements and are tested using modern inspection and measurement procedures. One of the major strengths is its range of single row cylindrical roller bearings. This bearing type features optimum operational reliability and maximum cost effectiveness. With very short lead times.

Customers contributions:

Special bearings are developed in close cooperation with the customers. They profit from the new development engineering department ‘Advanced Engineering’, where new technological approaches from research and development and practical experience from application engineering are united. In addition to product development and application engineering offers customers comprehensive services including technical calculations, support in obtaining certifications, and training courses.

What You Need to Know About Wheel Bearings

A wheel bearing failure at riding speed can lead to a serious crash, or if you get lucky, may just ruin some expensive parts, including wheel hubs, axles, etc. So don't neglect them, because they’re important and easy to forget about. The owner's manual or shop manual are good places to start for determining wheel bearing inspection intervals and service procedures. Most modern bikes have ball-type wheel bearings that are designed with seals that keep you from being able to add grease.

These sealed wheel bearings can last as long as you own the bike, if you treat them right. However, overloading the motorcycle, riding in deep water that goes over the hubs, directing a pressure washer or hose on the center hub areas, doing wheelies, jumps or riding hard on rugged terrain will reduce their service life, as will neglecting to lubricate bearings that can be greased. Observe the manufacturer's guidelines for inspecting and replacing wheel bearings, and change them whenever you notice excessive wear or looseness. So, how can you tell if they need replaced? It all starts with a visual inspection.

During tire changes is a great opportunity to check and maintain your wheel bearings. With the bike safely supported on a motorcycle jack or center stand, turn the tire and wheel assembly by hand and attempt to get the wheel to move side to side, to feel for any slack or play in the bearings. If you can feel looseness, the wheel bearings need further inspection.

When the wheel is off, push a finger in the hole where the axle goes and try to turn the bearing. If the bearing sticks as you turn it, or feels rough, it's faulty. Also look for any metal dust or rust around the bearings. If any of these problems are found, replace the bearings as a set. With the wheel off, stick a finger into the center hole of the bearing and feel how it turns by hand. It should be smooth and not feel loose or stick anywhere.

Types and uses of Bearings:Mbp Bearings.com

A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts. Most bearings facilitate the desired motion by minimizing friction. Bearings are classified broadly according to the type of operation, the motions allowed, or to the directions of the loads (forces) applied to the parts.The simplest form of bearing, the plain bearing, consists of a shaft rotating in a hole. Lubrication is often used to reduce friction. In the ball bearing and roller bearing, to prevent sliding friction, rolling elements such as rollers or balls with a circular cross-section are located between the races or journals of the bearing assembly. A wide variety of bearing designs exists to allow the demands of the application to be correctly met for maximum efficiency, reliability, durability and performance.The term "bearing" is derived from the verb "to bear" a bearing being a machine element that allows one part to bear another.The most sophisticated bearings for the most demanding applications are very precise devices; their manufacture requires some of the highest standards of current technology.

There are Some common types of bearing, each of which operates on different principles:- 

• Plain bearing: Consisting of a shaft rotating in a hole. 
• Ball bearing: In which the rolling elements are spherical balls.
• Roller bearing: In which the rolling elements are cylindrical rollers.
• Magnetic bearing: In which the load is supported by a magnetic field.

Plain bearing:

A plain bearing is the simplest type of bearing, comprising just a bearing surface and no rolling elements. Therefore, the journal slides over the bearing surface. The simplest example of a plain bearing is a shaft rotating in a hole.Plain bearings, in general, are the least expensive type of bearing. They are also compact and lightweight, and they have a high load-carrying capacity.


Ball bearing:

A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races.The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this by using at least two races to contain the balls and transmit the loads through the balls.Ball bearings tend to have lower load capacity for their size than other kinds of rolling-element bearings due to the smaller contact area between the balls and races. However, they can tolerate some misalignment of the inner and outer races.


Roller bearing:

A rolling-element bearing, also known as a rolling bearing,is a bearing which carries a load by placing rolling elements between two bearing rings called races. The relative motion of the races causes the rolling elements to roll with very little rolling resistance and with little sliding.
A rolling element rotary bearing uses a shaft in a much larger hole, and cylinders called "rollers" tightly fill the space between the shaft and hole.Rolling-element bearings have the advantage of a good tradeoff between cost, size, weight, carrying capacity, durability, accuracy, friction, and so on.


Magnetic bearing:

A magnetic bearing is a bearing that supports a load using magnetic levitation. Magnetic bearings support moving parts without physical contact. For instance, they are able to levitate a rotating shaft and permit relative motion with very low friction and no mechanical wear. Magnetic bearings support the highest speeds of all kinds of bearing and have no maximum relative speed.Magnetic bearings are used in several industrial applications such as electrical power generation, petroleum refinement, machine tool operation and natural gas handling.

Maintenance and lubrication


Many bearings require periodic maintenance to prevent premature failure, but many others require little maintenance. Nonsealed bearings often have a grease fitting, for periodic lubrication with a grease gun, or an oil cup for periodic filling with oil.Many bearings in high-cycle industrial operations need periodic lubrication and cleaning, and many require occasional adjustment, such as pre-load adjustment, to minimise the effects of wear.Bearing life is often much better when the bearing is kept clean and well lubricated. a good maintenance program might lubricate the bearings frequently but not include any disassembly for cleaning.


Company Name: MBP BEARINGS PVT. LTD.
Address: 902/290, SHALIMAR INDUSTRIAL AREA, NEAR LANE NO. 3,
MAIN ROAD, Delhi - 110088, India
Contact No:9350186486
Website: http://www.mbp-bearings.com

What Are Ball Bearings Used For?

Ball bearings reduce friction between rotating shafts and the housings that hold them. They are called "rolling-element bearings" and their applications range from medical equipment to motors to turbines. The basic design has an inner race to carry the shaft, a ring of balls held in place by a cage to keep them correctly spaced, and an outer race that mounts to the housing or whatever fixture attaches the shaft to the rest of the mechanism. Roller bearings apply the same principle,, but instead of balls, they use cylinders to carry greater loads, sometimes in races angled to carry an axial thrust load on the shaft.

Low Speed Applications

Bicycles provide a good example of a ball bearing application where neither speeds nor loads are high. They carry wheels on the axle spindles, the crank in the frame, and the pedals on the crank. Older versions don't have a cage to position the balls; they ride in a cup, held in place by a cone. The space between the balls is packed with bearing grease, and the clearance between cup and cone is adjustable so the bearing is not loose enough to allow play nor tight enough to bind the bearing. Newer versions are made as sealed cartridges.

High Speed Applications

High speeds put stress on bearings in several ways, including heat from friction, lubricant shear and centrifugal force. Rotational speed is not the only factor to consider; bearing designs also consider the diameter of the bore. Bearing speed is defined as a value of dN where (d) is bore diameter in millimeters multiplied by (N) which represents the rotational speed. Applications include turbochargers in automotive and aerospace designs, medical and dental equipment and high-speed machine tooling equipment. "Hybrid" designs use ceramic balls instead of steel for the advantages of reduced weight, greater smoothness and longer bearing life.

Axial and Moment Load Applications

Axial or thrust loads push and pull on the rotating shaft. Moment loads attempt to twist the bearing. Consider a swivel caster, with a wheel bearing and a swivel bearing. The wheel bearing supports weight as a radial load, on the axis of the bearing, and the swivel bearing supports the weight as a thrust load, perpendicular to the bearing. Because the wheel bearing is offset from the axis of the swivel bearing, a moment of torque applies to the swivel bearing. Vehicle wheels provide another example of axial loads from cornering forces.

Non-Radial Applications

Linear roller bearings work like ball or roller bearings, except they're arrayed to carry loads in a straight line. Applications include guidance systems for moving industrial equipment and monorail trains. "Transfer tables" are studded with ball or roller bearings so objects can roll over and/or across them. Those bearings turn on ball or roller bearings of their own. They are used in assembly lines and package or baggage handling, along with some grocery checkouts.

An Overview of MBP Bearing Company

MBP Bearing Company is a specialty company that focuses on the manufacture and supply of ball and roller bearings.

MBP BEARING is eminent manufacturer of a range of high-quality anti-friction Bearings. Our company maintains high standards of efficiency and assure clients that the offered products are highly dependable. For us, quality has always been an integral part and culture of our organization and stringent efforts are made to ensure that the customers get value for their money.

MBP BEARINGS Accreditation

MBP Bearing Company did not simply establish new facilities to ramp up production. They also meticulously worked to ensure that their products were of high quality.

Quality has always been an integral part and culture of our organization and every effort is made to ensure that the customers get value for their money. Our Plant is certified to ISO 9001:2000.

MBP Bearing Company Products

MBP Bearings Pvt. Ltd. is one of the leading manufacturers of hi-precision and hi-quality "MBP BRAND" anti-friction Bearings with exclusive range. Being a highly conscious company, we ensure the offered Taper Roller Bearings, Cylindrical Roller Bearings, Needle Roller Bearings, Spherical Roller Bearings, Angular Contract Bearings, Thrust Bearings, Clutch Release Bearings, SRDG and DRSA Ball Bearings, Pillow Block Bearings and Water Pump Bearings are of the highest standard and are dependable.

MBP Bearing Research and Development

MBP's R&D centre is dedicated to being a development partner for its clients. We aim to form a symbiotic relationship with our clients & become their thinking partners to find creative & innovative answer to engineering & technical requirements.

MBP's reputation and performance is built on the foundation of its vast experience in design, engineering & technological developments. MBP's constant growth has been characterized by it’s in-house ideas and innovations. We have developed skilled team equipped with the state-of-the-art technology to scrutinize bearing-behaviour and life spans under the most demanding conditions, in order to improve on current products. This helps us to stay prepared for development the next generation of bearings for a new, more demanding industry.

Innovative ideas are put into realization by a process of design, prototyping, testing, validation & serial production. These projects are managed in an integrated approach by skilled project managers which form an integral part of managing activities of each project, its requirement, progress & solutions.

Technological advancement done through research and development for our various products.

The research is applied to customer requirements which have resulted in to cost competitiveness and add value to customers in terms of performance of the products. As a forward-looking company, we invest a great deal in research and developmen.

The research is validated through endurance testing and various types of system level testing, checks and controls put for best quality product.  MBP has capability to develop and manufacture test rigs to carry out application specific test as per customer requirements.

Our product is developed as per customer specific requirement for better product performance. Our R & D Centre is equipped with all modern technologies and with various designing software.

Design advice for ceramic bearings

It is very important to understand the advantages and disadvantages of ceramic bearings before designing them into your application. Here, we highlight the pros and cons, outline the common ceramic bearing materials and touch upon a few of the endless applications in the field today.

When it comes to the advantages, ceramic microstructures enjoy covalent bonding inherent between non-metal elements. This means they share electrons. This atomic co-operation yields a very strong attraction force and because of this, ceramics offer a series of benefits in comparison to metals.

They normally have a very high hardness (70-90 HRc) and elastic, or Young’s, modulus. This means that they are resistant to shape change when loads are applied along with improved wear characteristics.

Ceramic bearings can run lubrication-free. This is because ceramic materials don’t micro-weld. Micro-welding happens, typically with metals, when the surface imperfections on the rolling element and raceway interact with one another causing an electric arc. This degrades the surface and substantially reduces the bearing life. Ceramic materials do not have this issue, which makes them suitable for various applications which require a lube-free environment.

They usually behave in a stable manner at high temperatures, meaning there is less thermal expansion. It takes a great deal more energy to increase the bond length of a covalent bond in comparison to a metallic ionic bond.

Ceramics are non-metallic, non-ferrous materials. They don’t corrode in the same way as metals when exposed to water and other hazardous chemicals. Their high degree of corrosion resistance allows them to perform excellently in wet and chemically-corrosive environments.

Many engineering ceramics also have a low density leading to improvements in bearings’ operational speeds, which is due to low centripetal forces and reduced friction.

Due to the lack of free electrons in most ceramics, they are non-magnetic and excellent insulators.

Disadvantages

I know what you’re thinking: look at all of those advantages! Why aren’t all bearings made of these brilliant materials? But I’m afraid there’s a bit of potentially bad news.

The first thing people might notice when researching ceramic bearings is that they are substantially more expensive than their metal counterparts. There are many reasons for this.

There are extremely high energy and processing costs associated with the massive energy needed to reach the required temperature for the sintering process of high-grade raw materials.

Since ceramics are so hard, the machining and grinding costs add up quickly when manufacturing precision bearings. All of this must be done in a clean environment with a skilled workforce.

Ceramics are incredibly sensitive to impurities in their pores so any contaminates could cause premature failure.

As the size increases the price also increases exponentially because of the requirement of high cost processing methods. These include a slower sintering process required to overcome the temperature gradient in the green body, the amount of evenly applied pressure over a larger volume and the resulting machine costs.

Ceramic bearings have lower load capacities in comparison to metals and are sensitive to thermal shock. Thermal shock is when the temperature gradient within the material causes a differential expansion, which results in an internal stress. This stress can exceed the strength of the material thus forming a crack.

Ceramics are also more difficult to achieve a high quality surface finish. It is possible to grind them to a Ra 0.1 surface finish, which allows a P5 precision class to be achieved. However, due to recent technological advances, higher precision classes are now possible with Carter ceramic bearings.

Common ceramic bearing materials

Silicon Nitride combines the retention of high strength and creep resistance with oxidation resistance. It has better high temperature capabilities than most metals and its low thermal expansion coefficient gives a better thermal shock resistance in comparison with most ceramic materials. Silicon Nitride is black in colour and the material of choice for vacuum and high-speed applications. It’s 58% lighter than traditional steel causing a reduction in centripetal force generated by the rolling elements, which significantly increases fatigue lifetime. Unlike other ceramic materials, Silicon Nitride can hold similar loads to bearing steel; however, it is unsuitable for the race design in any application with shock loading due to the hardness of the material.

Less frequently used than other ceramic materials due to its raw materials cost and difficulty to machine, Silicon Carbide offers the best heat and corrosion resistance of all the ceramic materials. Silicon Carbide is best used under low loads and in highly corrosive environments.

Applications

Many modern materials find their origins in pioneering space technology. Many ceramic materials that are now commonly used in bearings were developed for just this reason. Space exploration exhibits extreme loads and turbulent environments while demanding strict weight constraints and vacuum requirements.

Ceramic bearings are able to fulfil these requirements as many of them are lightweight and vacuum compatible. Unlike their steel equivalents, ceramic bearings are able to run un-lubricated, which not only stops possible contamination of delicate components in the surrounding applications but also reduces weight as there is no need for heavy greases. They also don’t experience cold welding unlike their steel counterparts.

Chemical and medical

For many applications where contamination can be potentially life threatening, ceramic bearings provide the best solutions. Whether it is mixing chemicals or within medical equipment, standard steels succumb to the effect of strong acids and alkalis. Standard steels, including stainless steel, can rust when washed with solutions and result in particulate contamination. Ceramic bearings do not react in the same way as standard steels because they are chemically inert compounds. This means they are not chemically reactive to corrosive materials and will not release harmful by-products.

Standard steel bearings also require some form of lubrication, either grease or oil, which can be difficult to clean and eventually breed bacteria unsuitable for sanitary applications. Moreover, as ceramics bearings can run dry and free of additional lubrication, there is no additional microbiology to worry about.

Scientific instrumentation

Some highly specialised instrumentation may require a fully non-magnetic system. The magneto-optical phenomenon called the Faraday Effect showcases the interaction between light and a magnetic field in a medium. If light is being measured or utilised in an instrument, a standard steel bearing must be avoided. Ceramic bearings are perfect for situations when magnetic resonance is an issue.

Conclusions

Ceramic bearings exhibit a vast range of advantages for engineering applications but also have disadvantages that must be taken into consideration. They are extremely hard, corrosion-resistant and have a high elastic modulus. They are able to run without lubrication, have low thermal expansion, are normally low density and have non-magnetic qualities. However, they are expensive, have low load capacities, are sensitive to thermal shock and are difficult to achieve a high quality of surface finish on.

Automotive Bearings Market Growth with Worldwide Industry

Bearings are used to enable rotational or linear movement, and to disable the unwanted friction and handling stress. Bearings are integrated in automotive to constrain the relative motion and allow desired motion, due to which, a vehicle can enhance its speed and efficiency. Vehicles have many rotating parts, and bearing are used in almost all parts. For example, axle bearings are used to enable wheel axles to turn.

The structure of bearing is simple, it has a ball, which has internal & external smooth metal surfaces, which helps bearings to move. The ball in the bearing is responsible for carrying the weight of the load, and load’s weight is responsible for giving a push to the bearing’s rotation.

There are different types of bearings used in the automotive, such as ball, roller & thrust bearings, housed units, needle roller bearings, plain bearings, plummer blocks, sleeves, slim section bearings, spherical roller bearings, etc. For instance, applications such as wheels and transmissions use roller bearings, as roller bearings support heavy-duty applications.

The demand for automotive bearings is growing with the increase in the automotive production globally, especially in the Asia Pacific and Western Europe. The demand for vehicles with technologically advanced solutions is fueling the growth for the global automotive bearings market. Growing demand for automotive bearing in developing countries and above factors are propelling the growth for global automotive bearings market.

Bearing Steel Market Confident Of Improving Strength & Durability of Bearings

Bearing Steel Market deals with the manufacture and development of special steel which contains the high performance ability of being able to withstand high levels of wear, tear and rolling fatigue. The chromium as well as engineering versions of bearing steel are popularly used as vital elements for bearings as well as for a variety of other purposes. This type of bearing steel contains a maximum of 1% carbon and a manganese content of somewhere between 0.3-0.9%. Various products like the ball, roller, bearing rings, etc., are also made from this type of steel.

Bearing Steel in Global market, especially in United States, Canada, Mexico, Germany, France, UK, Italy, Russia, China, Japan, India, Korea, Southeast Asia, Australia, Brazil, Middle East and Africa. This report splits the global market into several key Countries, with sales, revenue, market share of top 5 players in these Countries, from 2012 to 2017 (with a forecast period of 2017 – 2022).

Aims to empower our clients to successfully manage and outperform in their business decisions. We do this by providing Premium Market Intelligence, Strategic Insights and Databases from a range of Global Publishers.

Bearings for Mechanical and Electrical Products Market attracts Heavy Vehicle Market

The bearing for ‘Mechanical and Electrical’ market encompasses rolling bearings, comprising ball and roller bearing assemblies of several designs, including mounted-bearing units.

The mechanical equipment bearing markets accounted for most of market, and finds major application in light and heavy machines and equipment, as well as aerospace, off-highway and railway vehicles, bearings are classified into ball bearings, plain bearings, roller bearings, fluid bearings, magnetic bearings, jewel bearings and flexure bearings.

Competitive landscape for each of the product types is highlighted in this report along with the key players profiled with attributes of company overview, financial overview, business strategies, product portfolio and recent developments.

How Can Water Corrode the Integrity of Wheel Bearings?

If wheel bearing seals are functioning properly, water and other contaminants only have the power to damage the exterior of the bearings. However, if water is able to seep past seals, it can corrode the integrity of bearings by changing the viscosity of lubrication. Changes in lubrication will cause excessive friction, which over time can lead to mechanical deficiencies. Water can even set the stage for oxidation that will subtly degrade bearing integrity. Water is one of the most dangerous contaminants to protect against since it can become the root cause of catastrophic bearing failure.

Products : MBP Bearings Pvt Ltd

Products

Taper Roller Bearing

Deep Grove Ball Bearing

Cylindrical Roller Bearing

Spherical Roller Bearing

Clutch Bearings

Centre Bearings

Centre Bearing Assembly

Steering Bearings

Thrust / Jack Bearings

Needle Cage Bearing

King Pin Bearings

Water Pump Bearings

Self Aligning Ball Bearings

Mbp Bearings search process for plastic bearing applications

Mbp Bearings has published a new research study titled “Plastic Bearings Market – Growth, Share, Opportunities, Competitive Analysis and Forecast, 2015 – 2022”. The Plastic Bearings market report studies current as well as future aspects of the Plastic Bearings Market based upon factors such as market dynamics, key ongoing trends andsegmentation analysis.Apart from the above elements, the Plastic Bearings Market research report provides a 360-degree view of the Plastic Bearings industry with geographic segmentation, statistical forecast and the competitive landscape.

Geographically, the Plastic Bearings Market report comprises dedicated sections centering on the regional market revenue and trends. The Plastic Bearings market has been segmented on the basis of geographic regions into North America, Europe, Asia Pacific and Rest of the World (RoW). The RoW segment consists Latin America and the Middle East & Africa. The Plastic Bearings market has been extensively analyzed on the basis of various regional factors such as demographics, gross domestic product (GDP), inflation rate, acceptance and others.Plastic Bearings Market estimates have also been provided for the historical years 2013 & 2014 along with forecast for the period from 2015 – 2022.

The research report also provides a comprehensive understanding of Plastic Bearings market positioning of the major players wherein key strategies adopted by leading players has been discussed. The Plastic Bearings industry report concludes with the Company Profiles section which includes information on major developments, strategic moves and financials of the key players operating in Plastic Bearings market.

Bearing Market: Technological developments & Key Insights by 2020

The bearing is an essential part of the machinery which helps to reduce the friction of motion and increases the smoothness of machine. Bearings are widely used in the automotive industry which helps to increase the speed of a vehicle. Bearing reduces the friction between fixed and moving machine parts. However, it requires consistent maintenance to prevent early failure. The desperate need for energy-efficient vehicles and the expanding demand for bearings from the defense and aerospace industry increase the importance of bearing.

The bearing market is mainly driven by growing automotive market across the world. Strong growth of the automotive sector in Asia-Pacific region is expected to further drive the demand for bearing market through the forecast period. The rising demand across various application sectors such as industrial, railways and aerospace sector is expected to witness a substantial growth during the forecast period. Development of seal technologies, lightweight elements in high-performance bearings and lubrication technologies gives some market growth opportunities.

The report covers forecast and analysis for the bearing market on a global and regional level. The study provides historic data of 2014 along with a forecast from 2014 to 2020 based on revenue (USD Billion). The report also offers the detailed competitive landscape of the global bearing market. It includes company market share analysis, the product portfolio of the major industry participants. The report provides detailed segmentation of the bearing market based on product, application segment and region. On the basis of product, the global bearing market is segmented into ball bearing, plain bearing, and roller bearing. The ball bearing product segment of bearing market is the fastest growing segment of bearing market through the forecast period due to its advantages like smaller surface contact and less friction.

Automotive, agriculture, electrical, mining & construction, railway & aerospace and other applications are the key applications involved in the bearing market. Bearing applications in motor vehicles that are automotive held the highest revenue share in 2014. Major regional segments analyzed in this study include North America, Europe, Asia-Pacific, Latin America, and the Middle East and Africa. This report also provides further bifurcation of a region on the country level. Major countries analyzed in this reports are U.S., Germany, France, UK, China, Japan, India, and Brazil. Asia Pacific was the dominating region in the global market of bearing in 2014 due to the booming automobile industry in this region. Asia Pacific is followed by Europe and North America.

The report covers detailed competitive outlook including company profiles of the key participants operating in the global market. Key players profiled in the report include Mbp Bearing Pvt. Ltd,

Global Bearing Market: Product Segment Analysis

    Ball bearing
    Plain bearing
    Roller bearing

Global Bearing Market: Application Segment Analysis

    Automotive
    Agriculture
    Electrical
    Mining & Construction
    Railway & Aerospace
    Others

Global Bearing Market: Regional Segment Analysis

    North AmericaU.S.
    EuropeUK
    France
    Germany
    Asia PacificChina
    Japan
    India
    Latin AmericaBrazil
    The Middle East & Africa

The importance of ball bearing

A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races.

The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this by using at least two races to contain the balls and transmit the loads through the balls. In most applications, one race is stationary and the other is attached to the rotating assembly (e.g., a hub or shaft). As one of the bearing races rotates it causes the balls to rotate as well. Because the balls are rolling they have a much lower coefficient of friction than if two flat surfaces were sliding against each other.

Ball bearings tend to have lower load capacity for their size than other kinds of rolling-element bearings due to the smaller contact area between the balls and races. However, they can tolerate some misalignment of the inner and outer races.

The three primary principles of maximising bearing life are: selecting the correct lubricant, applying the lubricant properly, and maintaining the lubricant in a clean condition. Neglect or failure in any of these three areas will seriously increase the risk of premature bearing failures and will interfere with trouble-free running.

The increased speeds and higher temperatures at which modern bearings routinely operate, combined with the demands placed upon them for improved accuracy and reliability, mean that the process of selecting a suitable bearing lubricant today, is more critical than ever. Correct selection of a lubricant:

•     Reduces friction and wear by providing an elasto hydrodynamic film of sufficient strength and thickness to support the load and separate the balls from the raceways, preventing metal-to-metal contact.
•     Minimises cage wear by reducing sliding friction in cage pockets and land surfaces.
•     Prevents oxidation/corrosion of the bearing rolling elements.
•     Acts as a barrier to contaminants.
•     Serves as a heat transfer agent.

Bearing lubricants fall into three main categories: oils, greases and solid dry film lubricants, which are usually limited to moderate speed and very light loading conditions. The selection of a particular type of bearing lubricant is generally governed by the operating conditions and limitations of a bearing system. Factors include:

•     The viscosity of the lubricant at operating temperature.
•     The maximum and minimum allowable operating temperatures.
•     The speed at which the bearing will operate.

Grease considerations

The primary advantage of grease over oil is that bearings can be pre-lubricated, eliminating the need for - and the cost of - an external lubrication system. Besides simplicity, grease lubrication also requires less maintenance and has less stringent sealing requirements than oil systems. Grease tends to remain in proximity to bearing components.

The drawbacks of using grease are that it does not conduct heat away from a bearing as efficiently as oil. Also, grease can increase the initial torque within a bearing and cause running torque to be slightly higher. The speed limits for greases (expressed as an ndm value, with ndm being the rpm multiplied by the bearing PCD in mm) are generally lower than for oils due to the plastic nature of grease that tends to cause overheating at high speeds.

In certain applications the design of the bearing and the selection of a suitable grease become very challenging. Here, it is critical that the bearing supplier has the knowledge and experience to suggest a grease that ensures maximum reliability of the bearings over long operating periods without re-lubrication. Current "greased-for-life" bearing technology can consistently give 30,000+ hours of life at 700,000 ndm.

Oil considerations

While grease lubrication is inherently simpler than lubrication with oil, there are still applications where oil is the better choice. In high-speed spindle and turbine applications, for example, oil is supplied continuously and provides cooling as well as lubrication. A further example is instrument bearings with extremely low values of starting and running torque. These require only a minimal, one-time lubrication, each bearing receiving just a few milligrammes of oil.

The limiting speeds for oil-lubricated bearings are governed by the size of the bearing and the design of the cage, rather than by the lubricant itself. To illustrate this, petroleum or diester-based oils can accommodate bearing speeds of up to 1,500,000 ndm or higher. In the case of silicone-based oils, the maximum speed rating drops to 350,000 ndm. Similarly, when calculating life for bearings lubricated with silicone-based oils, the Basic Load Rating (C) should be reduced by two-thirds (C/3). To ensure long life at high speeds, the lubrication system should provide for retention, circulation, filtration and possibly cooling of the oil.

In extremely harsh operating environments such as dry pump bearings, often oil selection is pre-defined to a certain extent by the end user. In dry pumps, the challenge for the bearing supplier is to optimise the design of the bearings in order to make the best use of relatively poor lubrication.

Solid soft film lubricants

Solid soft films are primarily used to provide solid lubrication for bearings in extreme applications where traditional fluid lubricants would be rendered ineffective. They offer the advantages that their friction is independent of temperature, and they do not evaporate or creep in terrestrial vacuum or space environments.

The solid soft film lubricant can either be applied directly to the surface or transferred by rubbing contact from a sacrificial source such as a self-lubricating bearing cage.

How to do clearence of bearings?

Bearing clearance 

Selecting a clearance class

The clearance values listed in the relevant product chapters are valid for unmounted bearings. To select the best clearance value for an application, the required operating clearance in the bearing (in operation) must be determined first.

Because there are many factors that can influence operating clearance in a bearing, these calculations are best done with the aid of sophisticated computer programs. As a result, recommends using one of the computer programs available through the application engineering service. These programs consider tolerances, fits and component temperatures, to calculate the required initial internal clearance.

The required initial internal clearance of an unmounted bearing can be estimated using


r = rop + Δrfit + Δrtemp

where

r = required internal clearance for the unmounted bearing [mm]
rop = desired operating clearance [mm]
Δrfit   = clearance reduction caused by the fit [mm]
Δrtemp  = clearance reduction caused by temperature difference [mm]


Clearance reduction caused by an interference fit

The reduction equals the effective interference fit multiplied by a reduction factor using

Δrfit = Δ1 f1 + Δ2 f2

where

Δrfit = clearance reduction caused by the fit [mm]
f1 = reduction factor for the inner ring
f2 = reduction factor for the outer ring
Δ1      = effective interference between the inner ring and shaft [mm]
Δ2      = effective interference between the outer ring and housing [mm]

The reduction factors can be obtained from diagram 1 as a function of the ratio of the bearing bore diameter d to the outside diameter D. It is valid for a solid steel shaft and a cast iron or steel housing. For the effective interference fit, the mean value of the smallest and largest values of the probable .

Clearance reduction caused by a temperature difference between the bearing rings

When the inner ring temperature is higher than the outer ring temperature, the internal clearance within the bearing is reduced. The internal clearance reduction can be estimated using

Δrtemp = α dm ΔT

where

Δrtemp = clearance reduction caused by temperature difference [mm]
dm = bearing mean diameter [mm]
=       0,5 (d + D)
α = thermal coefficient of expansion [°C–1]
=       12 x 10–6 for steel
ΔT      = temperature difference between the shaft and housing [°C]

The temperature difference between components during start-up can be much higher than under steady state conditions (diagram 2) and unwanted preload may result. It is important to avoid unwanted preload during startup, because even short periods of preload can have a negative impact on bearing service life. One way to avoid excessive heat and the resulting preload is to start the application at a slow speed and increase the speed incrementally.

Procedure for installation of Taper Roller Beraings

Tapered Bearing Adjustment 

In order to ensure correct adjustment, the tapered bearings are required to have "zero end play" at all times. The procedure to accomplish this in a caster is as follows:

Check that each spacer is positioned in the correct place, through the seal and up against the face of each bearing.

Install the wheel into the rig.
   
Install the axel through the legs, spacers and bearings.

Assemble the slotted nut on the end of the axle and tighten with a wrench until the wheel has sufficient drag to stop the wheel from rotating at all when released from your hand while trying to spin the wheel. This will seat the tapered bearing cones into the cups.
   
Back the nut off approximately a quarter of a turn to locate the cross drilled hole in the axle and one of the slots in the nut.*
   
Spin the wheel. When released from your hand, the wheel should turn approximately one half of a rotation.
   
Install the roll pin.*

The bearings should be checked for the correct adjustment and to assure they are properly lubricated every 500 hours of service or as frequently as possible afterwards.

*Some casters maybe assembled with a Flexloc nut, this product has a locking feature that allows infinite adjustment without using a roll pin to secure the nut.

Tapered Roller Bearing Installation

Install the cup(3) into the wheel bore. The cup (3) must be fully seated against the step in the bore. Make sure the taper of the cup (3) is in the proper orientation.
   
Install the cone (2) into the cup (3). This is a loose fit.
   
Install the flinger washer (7) on top of the cone (2).
   
Install the closure (5) over the flinger washer (7). Make sure to fully seat the closure (5) around flinger washer (7) and cup (3).
   
Repeat above procedure for the opposite side.
   
Install the wheel (10) into the caster.
   
Place a spacer (6) between the closure (5) and the caster leg on each side.
   
Slide the axle (9) through the caster legs and wheel assembly (10).
   
Install a castle nut (8) and tighten until the wheel (10) will not spin. this will seat the bearings into the bore.
 
Loosen the castle nut (8) until the wheel (10) is free spinning.
   
Tighten the castle nut (8) until the wheel (10) begins to drag.
   
Align the slots in the castle nut (8) with the cross holes in the axle (9) by tightening or loosening the castle nut (8). If tightening, the wheel (10) must be able to spin somewhat freely. If loosening, the wheel (10) cannot have any end play. The bearing should have some pre-load. Install cotter pin or roll pin (4) through the slotted nut (8) and axle (9).
   
Lubricate bearings through the grease zerk (1) using Shell Alvania Grease 2 or equivalent.