The document is a presentation about bearings that was prepared by Akash Panchal. It defines a bearing as a machine element that constrains motion between moving parts to only the desired motion. It discusses the history of bearings and mentions that Leonardo da Vinci incorporated drawings of ball bearings in his design for a helicopter around 1500. It also describes different types of bearings like ball bearings, roller bearings, plain bearings, and thrust bearings.
Bearing Description about basic, types, failure causesPankaj
This document discusses different types of bearings. It begins by defining a bearing as a device that allows constrained relative motion between two parts, typically rotation or linear movement. It then classifies bearings based on the motions they allow and their principle of operation. The document goes on to describe various types of bearings in detail, including ball bearings, roller bearings, thrust bearings, tapered roller bearings, and cylindrical roller bearings. It provides information on the characteristics, advantages, applications, and physical features of each bearing type.
This document discusses bearings and their functions. It describes how bearings support rotating shafts and reduce friction to allow for smooth rotation. There are two main types of bearings - plain/slider bearings which have a large contact area and high friction, and rolling/ball bearings which have less contact area and lower rolling friction. Ball and roller bearings are further described as having races, balls/rollers, and a cage that separates the balls to reduce friction. Common ball and roller bearing types and their applications are also outlined.
The document is a presentation on bearings created by Akash Panchal. It discusses the definition of a bearing, provides a brief history, and examines various types of bearings like ball bearings, roller bearings, plain bearings, and their functions. It also looks at bearing selection, arrangement, lubrication, and life calculation. The presentation contains several diagrams and is intended to provide an overview of bearings.
Bearings are used to support rotating shafts and come in different types depending on whether they are designed to withstand axial thrusts, radial loads, or both. The main bearing types are ball bearings, which use spheres, and cylindrical roller bearings, which use cylinders, with each type having different capacities for loads and misalignment. Deep groove ball bearings can withstand both radial and axial loads, while angular contact ball bearings have increased axial load capacity and self-aligning ball bearings are very tolerant of misalignment.
Bearings are machine elements designed to reduce friction, carry loads, and guide moving parts. They come in many types including ball bearings, roller bearings, and thrust bearings which use either rolling or sliding friction. Over time, bearings have evolved from early wheels to modern designs with inner and outer rings and cages to separate rolling elements. Proper bearing selection, installation, and maintenance are important to maximize bearing life.
This document discusses materials, heat treatments, and dimensional stability of rolling bearings used in SKF bearings. The key points are:
1) Bearing rings and rolling elements are made of through-hardening carbon chromium steel or case-hardening chromium-nickel steel and manganese-chromium steel.
2) Heat treatments include bainitic hardening, case hardening, and martensite hardening, each with advantages like dimensional stability or hardness, and disadvantages like cost or risk of cracks.
3) Dimensional stability is highest in bainite-hardened materials and martensite-hardened bearings can experience the most diameter change with heat.
Bearing Description about basic, types, failure causesPankaj
This document discusses different types of bearings. It begins by defining a bearing as a device that allows constrained relative motion between two parts, typically rotation or linear movement. It then classifies bearings based on the motions they allow and their principle of operation. The document goes on to describe various types of bearings in detail, including ball bearings, roller bearings, thrust bearings, tapered roller bearings, and cylindrical roller bearings. It provides information on the characteristics, advantages, applications, and physical features of each bearing type.
This document discusses bearings and their functions. It describes how bearings support rotating shafts and reduce friction to allow for smooth rotation. There are two main types of bearings - plain/slider bearings which have a large contact area and high friction, and rolling/ball bearings which have less contact area and lower rolling friction. Ball and roller bearings are further described as having races, balls/rollers, and a cage that separates the balls to reduce friction. Common ball and roller bearing types and their applications are also outlined.
The document is a presentation on bearings created by Akash Panchal. It discusses the definition of a bearing, provides a brief history, and examines various types of bearings like ball bearings, roller bearings, plain bearings, and their functions. It also looks at bearing selection, arrangement, lubrication, and life calculation. The presentation contains several diagrams and is intended to provide an overview of bearings.
Bearings are used to support rotating shafts and come in different types depending on whether they are designed to withstand axial thrusts, radial loads, or both. The main bearing types are ball bearings, which use spheres, and cylindrical roller bearings, which use cylinders, with each type having different capacities for loads and misalignment. Deep groove ball bearings can withstand both radial and axial loads, while angular contact ball bearings have increased axial load capacity and self-aligning ball bearings are very tolerant of misalignment.
Bearings are machine elements designed to reduce friction, carry loads, and guide moving parts. They come in many types including ball bearings, roller bearings, and thrust bearings which use either rolling or sliding friction. Over time, bearings have evolved from early wheels to modern designs with inner and outer rings and cages to separate rolling elements. Proper bearing selection, installation, and maintenance are important to maximize bearing life.
This document discusses materials, heat treatments, and dimensional stability of rolling bearings used in SKF bearings. The key points are:
1) Bearing rings and rolling elements are made of through-hardening carbon chromium steel or case-hardening chromium-nickel steel and manganese-chromium steel.
2) Heat treatments include bainitic hardening, case hardening, and martensite hardening, each with advantages like dimensional stability or hardness, and disadvantages like cost or risk of cracks.
3) Dimensional stability is highest in bainite-hardened materials and martensite-hardened bearings can experience the most diameter change with heat.
The document discusses bearings, including:
- Bearings are mechanical components that allow rotation between parts and consist of rolling elements like balls or rollers.
- There are several types of bearings including ball bearings, roller bearings, thrust bearings, and tapered roller thrust bearings.
- Bearing life refers to the period a bearing can continue operating before failure from factors like noise, abrasion, fatigue, or damage. Proper selection, mounting, and maintenance can extend bearing life.
- Relative bearing refers to the angle between an object and the forward direction of a vessel, and is used for navigation.
The document provides an overview of bearings, including:
1) A bearing is a machine part that supports and guides moving components while preventing motion in the direction of an applied load. Bearings reduce friction through their rolling motion.
2) There are different types of bearings depending on the direction of the applied force, including radial bearings for perpendicular forces and thrust bearings for parallel forces.
3) When selecting a bearing, criteria like the operating environment, load direction, size constraints, and maintenance needs must be considered to choose the optimal bearing type.
Bearings are used in machines to allow rotating parts to move freely while supporting loads. There are two main types of bearings: sliding contact/frictional bearings which operate on sliding friction; and rolling contact/anti-frictional bearings which have rolling elements like balls or rollers to reduce friction. Rolling contact bearings can carry heavier loads than sliding contact bearings and have lower friction, but are more complex and expensive to manufacture. Bearings are classified based on the type of load they support, such as radial loads, axial/thrust loads, or combined loads. Common bearing types include ball bearings, roller bearings, tapered roller bearings, and needle roller bearings.
The training content covers:
- Importance of proper bearing storage
- Importance of proper bearing installation
- Importance of bearing maintenance
- Bearing mounting and dismounting methods
This document discusses the calculation of bearing life and dynamic load ratings. It provides formulas and factors for calculating the radial and axial forces on bearings based on machine design and operating conditions. It also summarizes the Lundberg-Palmgren and SKF equations for calculating an equivalent dynamic bearing load and adjusted rating life of a bearing based on operating load and speed.
A bearing is a device that supports load and reduces friction between moving parts. There are two main types: plain/slider bearings and rolling/anti-friction bearings. Rolling bearings use balls or rollers to create separation between surfaces and are more commonly used. Common bearing materials include metals, alloys, and some non-metals. Bearings must be properly selected, mounted, lubricated, and maintained to maximize their lifespan and prevent premature failure.
Rolling contact bearings and design procedureJashavant singh
this slide will give you idea about the rolling contact bearing , its types application areas and also you will learn how to design rolling contact bearing ,
comparison between the rolling contact and sliding contact bearing , advantage and disadvantages.
Bearings support rotating shafts and allow them to rotate with minimal friction. There are two main types: plain/slider bearings where the shaft slides against the bearing, and rolling element bearings like ball or roller bearings where balls or rollers allow the shaft and bearing to roll against each other with lower friction. Rolling element bearings have lower starting torque needs and friction compared to plain bearings. Journal, footstep, and thrust bearings are types of plain bearings that support axial or radial loads on vertical or horizontal shafts. Proper lubrication is important for all bearing types to reduce friction.
Bearings are devices that allow rotational or linear movement between contacting surfaces while reducing friction and handling loads. There are two main types: rolling contact bearings, which use balls or rollers to transfer loads, and journal or sleeve bearings, which use a lubricating film. Key design considerations for selecting bearings include life, speed, space limitations, accuracy, and load type (radial, thrust, or both). Bearing catalogs provide load and life ratings to help selection.
This document discusses different types of bearings used in mechanical engineering. It describes bearings as machine components that support another element and allow relative motion while carrying a load. There are two main types - sliding contact bearings and rolling contact bearings. Rolling contact bearings, also called anti-friction bearings, use balls or rollers between elements and have lower coefficients of friction than sliding contact bearings. The document further details types of rolling contact bearings like ball bearings, roller bearings, and their construction and applications.
,bearings ,function of bearing ,footstep or pivot bearing ,bush and direct-lined housing ,thrust bearing ,journal bearing ,ball and roller bearings ,types of rolling bearing ,sliding contact bearing ,applications of roller bearings
This document discusses bearings, their functions, classifications, and types. It can be summarized as:
Bearings support rotating shafts and allow frictionless rotation. They are classified as plain or rolling bearings. Rolling bearings like ball and roller bearings use rolling elements to reduce friction compared to plain bearings. Common types include deep groove ball bearings, tapered roller bearings, and thrust ball bearings. Proper bearing selection, assembly, mounting, and lubrication are important to ensure low friction and long life.
This document discusses different types of bearings, including their functions, components, and applications. It begins by defining bearings and their purpose, then describes the three main types: rolling element bearings, sliding bearings, and elastomeric bearings. It focuses on rolling element bearings, explaining the components and types of ball bearings and roller bearings. Other bearing types discussed include mounted bearings, linear bearings, self-lubricating bearings, and elastomeric bearings. Guidelines for selecting the proper bearing for an application based on load and life calculations are also provided.
Bearing designations provide information about the bearing type, size, and any supplementary details. The basic designation indicates the product type, standard design, and size. Supplementary designations specify alternative designs, bearing components, and special types. Designations are broken into categories including internal design, external design, cage design, and performance enhancements. Together, the basic and supplementary designations precisely identify bearing characteristics.
This document discusses bearings and lubrication. It describes the main functions of bearings as supporting rotating shafts to transmit power and reduce friction. There are two main types of bearings: rolling contact bearings, which transfer load through rolling elements like balls and rollers; and journal or sleeve bearings, which transfer load through a thin film of lubricant. Key considerations in bearing selection include life, speed, load type, and accuracy requirements. Common bearing types are described like ball, roller, tapered, and thrust bearings. Proper lubrication and factors like bearing load and speed determine bearing life.
Definition, Use, Types of beariings, Types of Journal bearing, Materials for journal bearing, Failures of journal bearing, Design terms for journal bearing, Types of roller contact bearing, applications of roller contact bearing, Designation of roller contact bearing, Design terms for roller contact bearing, comparison between journal and roller bearings, characteristics of bearings, selection procedure of bearings
1. The document discusses rolling bearings, including their types, parameters that control bearing manufacturing and selection, bearing part numbering systems from major manufacturers like SKF, and factors that affect bearing life.
2. It defines basic static load rating, basic dynamic load rating, and basic rating life of bearings, and provides a formula to calculate catalog load rating based on desired life, speed, and load.
3. An example problem demonstrates using the rating life formula to determine the catalog load rating from SKF for a given desired life, speed, and
This presentation provide complete study of governor for GTU as well as PU and other university students. It covers basic terminologies, characteristics of governor, diagram, derivations etc. for proper understanding.
The document provides information on pistons used in internal combustion engines. It discusses the parts of a piston including the crown, ring lands, ring groove and skirt. It describes the functions of pistons to transmit force, form a seal and guide the connecting rod. Desirable piston characteristics and different piston head shapes are outlined. Various piston types like offset pin, cam ground, oil cooled and tapered pistons are explained. Common piston failures modes such as scuffing, burning, dry running and pin boss damage are summarized. The document discusses piston materials including cast iron, aluminum and hypereutectic alloys and proposes future piston designs with reduced skirt lengths.
Bearings are devices that allow rotational or linear movement between contacting surfaces while reducing friction and handling loads. There are two main types: rolling contact bearings which use rolling elements like balls or rollers to transfer load, and journal or sleeve bearings which use a thin film of lubricant. Key considerations in bearing selection and design include load type and magnitude, speed, space limitations, accuracy needs, and desired life. Bearing catalogs provide load and life ratings to help selection.
The document provides an overview of bearing fundamentals training for the rolling mill industry. It discusses different bearing types including tapered roller bearings, their components and features. It also covers topics like bearing metallurgy and fatigue, lubrication, fitting practices, and a comparison of bearing types for different load capabilities.
Intellectual Property Serrvices Outsourcing- India Company OverviewEPatents IP Services
EPatents is a IP Services firm which provides Patent and Trademark services to students,individual inventors, entrepreneurs, SMEs and other law firms in India and US.
This presentation is the overview of services offered by EPatents
The document discusses bearings, including:
- Bearings are mechanical components that allow rotation between parts and consist of rolling elements like balls or rollers.
- There are several types of bearings including ball bearings, roller bearings, thrust bearings, and tapered roller thrust bearings.
- Bearing life refers to the period a bearing can continue operating before failure from factors like noise, abrasion, fatigue, or damage. Proper selection, mounting, and maintenance can extend bearing life.
- Relative bearing refers to the angle between an object and the forward direction of a vessel, and is used for navigation.
The document provides an overview of bearings, including:
1) A bearing is a machine part that supports and guides moving components while preventing motion in the direction of an applied load. Bearings reduce friction through their rolling motion.
2) There are different types of bearings depending on the direction of the applied force, including radial bearings for perpendicular forces and thrust bearings for parallel forces.
3) When selecting a bearing, criteria like the operating environment, load direction, size constraints, and maintenance needs must be considered to choose the optimal bearing type.
Bearings are used in machines to allow rotating parts to move freely while supporting loads. There are two main types of bearings: sliding contact/frictional bearings which operate on sliding friction; and rolling contact/anti-frictional bearings which have rolling elements like balls or rollers to reduce friction. Rolling contact bearings can carry heavier loads than sliding contact bearings and have lower friction, but are more complex and expensive to manufacture. Bearings are classified based on the type of load they support, such as radial loads, axial/thrust loads, or combined loads. Common bearing types include ball bearings, roller bearings, tapered roller bearings, and needle roller bearings.
The training content covers:
- Importance of proper bearing storage
- Importance of proper bearing installation
- Importance of bearing maintenance
- Bearing mounting and dismounting methods
This document discusses the calculation of bearing life and dynamic load ratings. It provides formulas and factors for calculating the radial and axial forces on bearings based on machine design and operating conditions. It also summarizes the Lundberg-Palmgren and SKF equations for calculating an equivalent dynamic bearing load and adjusted rating life of a bearing based on operating load and speed.
A bearing is a device that supports load and reduces friction between moving parts. There are two main types: plain/slider bearings and rolling/anti-friction bearings. Rolling bearings use balls or rollers to create separation between surfaces and are more commonly used. Common bearing materials include metals, alloys, and some non-metals. Bearings must be properly selected, mounted, lubricated, and maintained to maximize their lifespan and prevent premature failure.
Rolling contact bearings and design procedureJashavant singh
this slide will give you idea about the rolling contact bearing , its types application areas and also you will learn how to design rolling contact bearing ,
comparison between the rolling contact and sliding contact bearing , advantage and disadvantages.
Bearings support rotating shafts and allow them to rotate with minimal friction. There are two main types: plain/slider bearings where the shaft slides against the bearing, and rolling element bearings like ball or roller bearings where balls or rollers allow the shaft and bearing to roll against each other with lower friction. Rolling element bearings have lower starting torque needs and friction compared to plain bearings. Journal, footstep, and thrust bearings are types of plain bearings that support axial or radial loads on vertical or horizontal shafts. Proper lubrication is important for all bearing types to reduce friction.
Bearings are devices that allow rotational or linear movement between contacting surfaces while reducing friction and handling loads. There are two main types: rolling contact bearings, which use balls or rollers to transfer loads, and journal or sleeve bearings, which use a lubricating film. Key design considerations for selecting bearings include life, speed, space limitations, accuracy, and load type (radial, thrust, or both). Bearing catalogs provide load and life ratings to help selection.
This document discusses different types of bearings used in mechanical engineering. It describes bearings as machine components that support another element and allow relative motion while carrying a load. There are two main types - sliding contact bearings and rolling contact bearings. Rolling contact bearings, also called anti-friction bearings, use balls or rollers between elements and have lower coefficients of friction than sliding contact bearings. The document further details types of rolling contact bearings like ball bearings, roller bearings, and their construction and applications.
,bearings ,function of bearing ,footstep or pivot bearing ,bush and direct-lined housing ,thrust bearing ,journal bearing ,ball and roller bearings ,types of rolling bearing ,sliding contact bearing ,applications of roller bearings
This document discusses bearings, their functions, classifications, and types. It can be summarized as:
Bearings support rotating shafts and allow frictionless rotation. They are classified as plain or rolling bearings. Rolling bearings like ball and roller bearings use rolling elements to reduce friction compared to plain bearings. Common types include deep groove ball bearings, tapered roller bearings, and thrust ball bearings. Proper bearing selection, assembly, mounting, and lubrication are important to ensure low friction and long life.
This document discusses different types of bearings, including their functions, components, and applications. It begins by defining bearings and their purpose, then describes the three main types: rolling element bearings, sliding bearings, and elastomeric bearings. It focuses on rolling element bearings, explaining the components and types of ball bearings and roller bearings. Other bearing types discussed include mounted bearings, linear bearings, self-lubricating bearings, and elastomeric bearings. Guidelines for selecting the proper bearing for an application based on load and life calculations are also provided.
Bearing designations provide information about the bearing type, size, and any supplementary details. The basic designation indicates the product type, standard design, and size. Supplementary designations specify alternative designs, bearing components, and special types. Designations are broken into categories including internal design, external design, cage design, and performance enhancements. Together, the basic and supplementary designations precisely identify bearing characteristics.
This document discusses bearings and lubrication. It describes the main functions of bearings as supporting rotating shafts to transmit power and reduce friction. There are two main types of bearings: rolling contact bearings, which transfer load through rolling elements like balls and rollers; and journal or sleeve bearings, which transfer load through a thin film of lubricant. Key considerations in bearing selection include life, speed, load type, and accuracy requirements. Common bearing types are described like ball, roller, tapered, and thrust bearings. Proper lubrication and factors like bearing load and speed determine bearing life.
Definition, Use, Types of beariings, Types of Journal bearing, Materials for journal bearing, Failures of journal bearing, Design terms for journal bearing, Types of roller contact bearing, applications of roller contact bearing, Designation of roller contact bearing, Design terms for roller contact bearing, comparison between journal and roller bearings, characteristics of bearings, selection procedure of bearings
1. The document discusses rolling bearings, including their types, parameters that control bearing manufacturing and selection, bearing part numbering systems from major manufacturers like SKF, and factors that affect bearing life.
2. It defines basic static load rating, basic dynamic load rating, and basic rating life of bearings, and provides a formula to calculate catalog load rating based on desired life, speed, and load.
3. An example problem demonstrates using the rating life formula to determine the catalog load rating from SKF for a given desired life, speed, and
This presentation provide complete study of governor for GTU as well as PU and other university students. It covers basic terminologies, characteristics of governor, diagram, derivations etc. for proper understanding.
The document provides information on pistons used in internal combustion engines. It discusses the parts of a piston including the crown, ring lands, ring groove and skirt. It describes the functions of pistons to transmit force, form a seal and guide the connecting rod. Desirable piston characteristics and different piston head shapes are outlined. Various piston types like offset pin, cam ground, oil cooled and tapered pistons are explained. Common piston failures modes such as scuffing, burning, dry running and pin boss damage are summarized. The document discusses piston materials including cast iron, aluminum and hypereutectic alloys and proposes future piston designs with reduced skirt lengths.
Bearings are devices that allow rotational or linear movement between contacting surfaces while reducing friction and handling loads. There are two main types: rolling contact bearings which use rolling elements like balls or rollers to transfer load, and journal or sleeve bearings which use a thin film of lubricant. Key considerations in bearing selection and design include load type and magnitude, speed, space limitations, accuracy needs, and desired life. Bearing catalogs provide load and life ratings to help selection.
The document provides an overview of bearing fundamentals training for the rolling mill industry. It discusses different bearing types including tapered roller bearings, their components and features. It also covers topics like bearing metallurgy and fatigue, lubrication, fitting practices, and a comparison of bearing types for different load capabilities.
Intellectual Property Serrvices Outsourcing- India Company OverviewEPatents IP Services
EPatents is a IP Services firm which provides Patent and Trademark services to students,individual inventors, entrepreneurs, SMEs and other law firms in India and US.
This presentation is the overview of services offered by EPatents
This document provides information about Hwang Cherng Bin Specialty Tools Inc., including its company profile, products, and contact information. It details that HCB is a leading manufacturer of automotive specialty tools founded in 1990 in Taiwan. The company has over 4,000 square meters of factory space and a professional R&D team that has developed over 700 tool types, with more than 70 patents. The document includes an index of HCB tools for brands like Mercedes Benz, BMW, and Honda.
1) An application for a patent must be filed in the prescribed form at the Patent Office and include a complete specification describing the invention.
2) A complete specification must describe the nature of the invention and how it is performed, beginning with the title and ending with a statement of the claimed invention. Drawings can be submitted before acceptance.
3) If there is no opposition within 4 months of advertising acceptance, a patent will be granted for 16 years from the date of application or priority, requiring renewal before the 4th year expires.
The document discusses the manufacturing process for an aluminum alloy piston. It begins by describing what a piston is and its functions in engines and pumps. It then discusses the key components of a piston engine. The document goes on to state the objective is to minimize cost while maximizing safety when manufacturing a piston that weighs 0.8-1kg and is 4-6mm in size out of an aluminum alloy for runs of either 1000 or 10000 pieces. It considers investment casting, forging, powder methods, and conventional machining as potential shaping processes and provides a cost comparison of the top three options.
A trademark is a word, phrase, symbol or design that identifies and distinguishes the goods of one party from another. To register a trademark in Bangladesh, an application must include information such as the applicant's name and address, the goods or services the mark will be used for, and whether the mark is currently in use or proposed for use. Authorizations must be signed and include the applicant's position. Trademarks are registered for seven years and can be renewed for additional 10-year periods if fees are paid in time. The registration process involves publication of the application, a opposition period, and can be appealed. Trademarks can be assigned and licensed, but these transactions must be properly recorded.
This document provides summaries of several granted patents related to food, beverages, fruit juices, and food processing/preparation machines in India. The patents granted include inventions related to a juice extractor, frozen edible food products, processes for concentrating fruit and vegetable juices, enzymatic debittering of pomegranate juice, oral rehydration solutions, compositions to stimulate bone formation, and processes for increasing the shelf life of fruit juices.
This document discusses different types of joints used to connect rotating or axial parts, including keys, cotters, and knuckle joints. It describes various key types like round, saddle, flat, and splined keys. Cotter joints are used to transmit axial force between two rods and use a tapered cotter strip and sleeve to join rod ends. Knuckle joints allow rotation but cannot sustain compressive forces due to their ability to rotate around the connecting pin. The document provides details on how to construct and draw representations of these different joint types.
This document is a thesis submitted by Pravardhan S. Shenoy to the University of Toledo in partial fulfillment of a Master of Science degree in Mechanical Engineering. The thesis, advised by Dr. Ali Fatemi, involves dynamic load analysis and optimization of a connecting rod. The study performs load analysis on the connecting rod to determine dynamic loads over time. Finite element analysis is conducted under quasi-dynamic and static loads. The connecting rod is then optimized for weight and cost subject to constraints like fatigue life.
A Case Study of New Product Development on Basis of “Dyson, Hoover and bag l...Rifat Chowdhury
This case study examines Dyson's development of the bagless vacuum cleaner. It details how Dyson created a new design that addressed issues with traditional vacuums. Major manufacturers rejected licensing the technology. Undeterred, Dyson launched the product himself in 1992 and found success due to innovative features like bagless cleaning and washable filters. The case discusses challenges inventors face getting licenses and getting new technologies adopted, and how governments and companies can better support innovation.
This document summarizes a presentation given by Vaibhav Kumar Arya on vocational training at Bharat Petroleum Corporation Limited in Mumbai. It discusses BPCL's refineries and history. It then focuses on centrifugal pumps, describing their main components and providing a case study on disassembling, cleaning, inspecting and reassembling a specific pump model. The pump was taken apart to replace a leaking mechanical seal and other worn parts.
Patent Drafting and Writing Strong Patent Applications for Creating & Protect...TechLaw.Attorney
Patent drafting is a process to convert inventor’s ideas into a legal document describing the technology covering inventor’s innovation in broadest possible format comprising patent claims, abstract, drawings and detailed description of the invention. Our team of technical patent attorneys are skilled and experienced to provide various services across diverse industry sectors.
Bajaj vs tvs patent infringement - case studyAltacit Global
The document discusses a patent infringement case between Bajaj Auto Ltd. and TVS Motor Company Ltd. regarding the use of twin spark plug technology in motorcycles. Bajaj was granted a patent in 2002 for using two spark plugs in small engine sizes between 45-70cc. TVS launched motorcycles with twin spark plugs in 2007. Bajaj sued TVS for patent infringement. The court initially granted an injunction to Bajaj but the division bench vacated it. The case went to the Supreme Court which allowed TVS to manufacture but not sell pending the final order.
This is mechanical engineering presentation on power steering system. In this presentation i describe basics of power steering and their history. I hope it will help you for your engineering and you can understand better about mechanical engineering.
The document provides an overview of the basic components and functions of internal combustion engines. It discusses the different types of engines including 4-stroke, V8, and 2-stroke engines. It also describes the key components that an engine needs to operate such as fuel, air, spark, and compression. Pistons, crankshafts, camshafts, valves and their functions are explained. The 4-stroke combustion cycle and engine timing are also summarized.
Group 3's presentation discusses the manufacturing of connecting rods. It compares the forging and casting processes, outlining the advantages of forging such as higher dimensional accuracy, lower costs for high production volumes, and smoother engine running. The presentation then details the specific forging and machining steps used to manufacture connecting rods, including heating, piercing, trimming, shot peening, fracturing, assembly, and inspection. Limitations discussed include the need for an environmentally friendly process and cost-effective finished product with limited mass deviation. Forging is considered more economical than casting for production volumes above 20,000 pieces.
Design and Construction of a Connecting rodFaisal Niloy
The document describes the design and construction of a connecting rod. It begins with the objectives of studying the connecting rod, understanding its function, designing it using CAD, and constructing a physical model. It then provides an introduction to connecting rods, explaining that they connect the piston to the crankshaft and transmit reciprocating motion to rotational motion. The document discusses different manufacturing processes for connecting rods and compares technologies. It presents the design process for the connecting rod, showing calculations for dimensions. Finally, it includes the CAD model and photos of the constructed physical connecting rod.
This document provides a case study on cross-competitor analysis for RFID patent mining in Q1 2009. It describes the goals of cross-competitor analysis as enabling predictions of competitors' moves. It then outlines the RFID patent mining process, which involves collecting patent data, cleaning the data, analyzing it statistically and technologically, and performing quantitative and qualitative analyses. Finally, it presents two strategic maps analyzing competitors' activity indices and product portfolios in overall RFID and specifically in RFID readers. The maps show which companies lead in different RFID technology areas.
This document discusses cotter and knuckle joints. It provides diagrams of a cut section of a socket and spigot joint, showing how the cylindrical spigot fits inside the socket. It also contains diagrams of a knuckle joint, which allows rotation between two connecting components about an axis perpendicular to their common plane. The document was authored by Hareesha N G of the Department of Aeronautical Engineering at Dayananda Sagar College of Engineering in Bangalore, India.
The document is a presentation on bearings created by Akash Panchal. It defines what a bearing is, provides a brief history of bearings, and discusses the main functions and types of bearings including ball bearings and roller bearings. It also covers bearing selection, arrangement, fits, and axial positioning.
This document discusses bearings and their functions. It describes the main types of bearings as plain or sliding bearings, and rolling or anti-friction bearings like ball and roller bearings. Ball and roller bearings have less friction than plain bearings due to their design involving balls or rollers that provide rolling motion rather than sliding contact. The document outlines different types of ball and roller bearings, how they are constructed, suitable applications, proper installation and positioning of bearings, and techniques for adjusting axial play.
This document provides information on bearings, including their functions, classifications, types, components, and proper installation. It can be summarized as follows:
Bearings support rotating shafts and allow frictionless rotation. They are classified as plain or rolling bearings. Rolling bearings like ball and roller bearings use rolling elements to reduce friction compared to plain bearings. Proper bearing selection, installation, and maintenance are important to ensure optimal performance and lifespan.
Bearings are used to support rotating shafts and allow frictionless rotation. Plain or sliding contact bearings include journal, footstep, and thrust bearings which have direct sliding contact between the shaft and bearing material. Journal bearings support radial loads on a shaft running through the bearing. Footstep bearings support vertical shafts with axial loads. Thrust bearings support axial loads on a shaft passing through the bearing. Common bearing materials include brass, bronze, and babbitt metal which can be replaced if worn.
Here you can see all about of bearings and thrust bearing. If you want
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Portal of tradeindia.
Get the details about industrial bearings manufacturers and suppliers with there complete details. We have a large list of manufacturers and exporters from india.
This document discusses bearings, including their classification, types, materials, and load characteristics. It begins by defining bearings and their functions. It then covers classifications based on load direction and contact type. Various types of rolling contact bearings are described, including ball, roller, taper, and spherical bearings. Static and dynamic load capacities are discussed. Methods for calculating equivalent bearing loads and selecting bearings based on load and life are presented. The document provides a comprehensive overview of bearings and considerations for their selection and use.
This document discusses bearings, including their classification, types, installation, selection, and life estimation. It covers:
- Classifying bearings as sliding or rolling based on contact type, and as radial, thrust, or combined based on load direction.
- Describing common rolling element bearings like ball bearings and different roller bearing types.
- Explaining how to properly install and arrange rolling element bearings on a shaft.
- Providing steps for selecting suitable rolling element bearings based on load requirements and life expectations using manufacturer tables and equations.
- Discussing factors that influence estimated bearing life like load, speed, and reliability calculations.
Things to Know About an Angular Contact Ball BearingSKFIndia
In addition, the accuracy grades of angular contact bearings include rotational accuracy and dimensional tolerance. Brands and manufacturing companies such as SKF India provide high-quality angular contact ball bearings for electric motors, compressors, industrial pumps, and more.
The document discusses different types of bearings used in machines and their functions. It describes sliding contact bearings like hydrodynamic and hydrostatic bearings, and rolling contact bearings like ball and roller bearings. The key types of rolling contact bearings are explained as journal/sleeve bearings, thrust bearings, and guide bearings based on the direction of load and motion. Common applications of rolling contact bearings and their advantages are also summarized.
Analysis of hydrodynamic fixed pad bearing to reduce vibration by replacing f...ijsrd.com
Rotating machineries are always subject to vibrations due to critical speeds, unbalance, and instability. Usually the least expensive modification of a machine to make is the bearing. A wide variety of bearings have been developed to combat some of the different types of vibration problems. This report consist the analysis of 360deg hydrodynamic bearing of Boiler Feed water Pump. The boiler feed water pump is very critical rotatory equipment of Thermal power plant the bearing of this pump must be able to withstand in vibration and other hydraulic forces while still maintaining a high degree of reliability. This report consist analysis and design of 360 hydrodynamic bearing also replacing fixed pad by flexural pad and analysis bearing vibration and compare vibration for the same condition with the help of FEM Method in ANSYS.
summer training report on NBC for B.TECH studentsAbhishek Gora
The document discusses taper roller bearings, which can take both axial and radial loads. Taper roller bearings are composed of an inner race, outer race, rolling elements, and a cage. They are available in single, double, and four row configurations. Taper roller bearings are used in heavy duty applications like construction equipment, axles, gearboxes, and engine motors due to their ability to handle large loads and their durability.
1. The document is a presentation on antifriction bearings presented by students at Government Polytechnic Hosadurga.
2. It discusses the basic components and functions of antifriction bearings including reducing friction, carrying loads, and guiding parts.
3. Specific bearing types are examined like journal ball bearings, cylindrical bearings, needle bearings, footstep bearings, and their components and uses are described.
This document discusses anti-friction bearings used in machine tool design. It defines bearings and their purpose of allowing relative motion with minimal friction. It describes the broad classifications and types of ball and roller bearings, including deep groove ball bearings, self-aligning bearings, thrust ball bearings, angular contact ball bearings, cylindrical roller bearings, needle roller bearings, and tapered roller bearings. It discusses bearing requirements, types, dimensions, load capacities, lives, calculations, mounting, lubrication, and failure causes. It also covers spindle bearing arrangements and rigidity calculations.
Here are the key steps to solve this bearing life problem:
1. Given: Load (P) = 3000 KN, Load life (Lh) = 30000 h, Speed (n) = 600 rpm, Bore diameter (d) = 40 mm
2. Convert speed to rpm: n = 600 rpm
3. Use bearing life equation:
L = 60nLh/106
L = 60 * 600 * 30000/106 = 1080 million revolutions
4. Use bearing load life capacity equation:
C = P(L10)1/3
C = 3000 * (1080)1/3 = 30779.57 N
So the bearing life is 1080 million revolutions
Bearings work by reducing friction between moving parts and supporting loads. There are two main types:
1. Rolling element bearings (balls or rollers) that have lower starting friction and can carry higher loads than sliding bearings. Common types include ball, tapered roller, cylindrical roller, and spherical roller bearings.
2. Sliding element bearings have higher friction but can accommodate misalignment. Loads can be radial, axial, or combined. Selection depends on factors like space, load characteristics, and lubrication needs.
Bearings have inner and outer rings that contain the rolling elements or sliding surfaces. Proper mounting, lubrication, and maintenance are required to prevent premature failure and ensure long life
Presentation on NBC Bearing by Chirag JoshiChirag Joshi
The document provides information about National Bearing Company (NBC). It discusses the different types of bearings NBC manufactures, including ball bearings, tapered roller bearings, cylindrical roller bearings, and spherical roller bearings. The document outlines the manufacturing process for ball bearings at NBC, including steps like forging, heat treatment, grinding, and assembly. It also discusses features and applications of ball bearings.
This document summarizes key aspects of rudder theory and design. It discusses how rudders generate force through pressure differences on each side, and how this force has both lift and drag components. It describes different types of rudders based on the position of the center of effort relative to the axis of rotation, including balanced, semi-balanced, and unbalanced rudders. It also discusses rudder construction materials, pintle bearings, and considerations for rudder stock sizing based on the type of rudder.
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECTjpsjournal1
The rivalry between prominent international actors for dominance over Central Asia's hydrocarbon
reserves and the ancient silk trade route, along with China's diplomatic endeavours in the area, has been
referred to as the "New Great Game." This research centres on the power struggle, considering
geopolitical, geostrategic, and geoeconomic variables. Topics including trade, political hegemony, oil
politics, and conventional and nontraditional security are all explored and explained by the researcher.
Using Mackinder's Heartland, Spykman Rimland, and Hegemonic Stability theories, examines China's role
in Central Asia. This study adheres to the empirical epistemological method and has taken care of
objectivity. This study analyze primary and secondary research documents critically to elaborate role of
china’s geo economic outreach in central Asian countries and its future prospect. China is thriving in trade,
pipeline politics, and winning states, according to this study, thanks to important instruments like the
Shanghai Cooperation Organisation and the Belt and Road Economic Initiative. According to this study,
China is seeing significant success in commerce, pipeline politics, and gaining influence on other
governments. This success may be attributed to the effective utilisation of key tools such as the Shanghai
Cooperation Organisation and the Belt and Road Economic Initiative.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELgerogepatton
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapte...University of Maribor
Slides from talk presenting:
Aleš Zamuda: Presentation of IEEE Slovenia CIS (Computational Intelligence Society) Chapter and Networking.
Presentation at IcETRAN 2024 session:
"Inter-Society Networking Panel GRSS/MTT-S/CIS
Panel Session: Promoting Connection and Cooperation"
IEEE Slovenia GRSS
IEEE Serbia and Montenegro MTT-S
IEEE Slovenia CIS
11TH INTERNATIONAL CONFERENCE ON ELECTRICAL, ELECTRONIC AND COMPUTING ENGINEERING
3-6 June 2024, Niš, Serbia
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
3. What Is Bearing
A bearing is a machine element that constrains
relative motion between moving parts to only
the desired motion..
The term "bearing" is derived from the verb "to
bear; a bearing being a machine element that
allows one part to bear (i.e., to support)
another.
Author - Akash Panchal 142912/18/2014
4. History
The invention of the rolling bearing, in the form of
wooden rollers supporting, or bearing, an object
being moved is of great antiquity, and may predate
the invention of the wheel.
Leonardo da Vinci incorporated drawings of ball
bearings in his design for a helicopter around the
year 1500. This is the first recorded use of bearings in
an aerospace design.
Author - Akash Panchal 142912/18/2014
7. Today ball and roller bearings are used
in many applications which include a
rotating component. Examples include
ultra high speed bearings in dental
drills, Aerospace Bearings in the Mars
Rover, gearbox and wheel bearings on
automobiles, flexure bearings in
optical alignment systems and bicycle
wheel hubs.
Author - Akash Panchal 142912/18/2014
8. Function Of A Bearing
The main function of Bearing is rotating shaft is to
transmit power from one end of the line to the other.
It needs a good support to ensure stability and
frictionless rotation. The support for the shaft is
known as “bearing”.
The shaft has a “running fit” in a bearing. All bearing
are provided some lubrication arrangement to
reduced friction between shaft and bearing.
Author - Akash Panchal 142912/18/2014
12. Ball and roller bearings
Frictional resistance considerably less than in plain bearings
Rotating – non-rotating pairs separated by balls or rollers
Ball or rollers has rolling contact and sliding friction is
eliminated and replaced by much lower rolling friction.
In plain bearing the starting resistance is much larger than the
running resistance due to absence of oil film.
In ball and rolling bearings the initial resistance to motion is
only slightly more than their resistance to continuous running.
Author - Akash Panchal 142912/18/2014
13. Types of rolling bearing
• Incorporating a deep hardened
raceway which makes them
suitable for radial and axial loads
in either direction, provided the
radial loads are greater than the
axial loads.
Single row
deep-groove
ball bearing:
• Roller bearing have a greater
load-carrying capacity than ball
bearing of equivalent size as they
make line contact rather than
point contact with their rings.
Single row
roller
bearing:
Author - Akash Panchal 142912/18/2014
14. Ball and Roller bearing
• The cages are made of low-carbon steel,
bronzes or brasses, though for high
temperature application case-hardened
and stainless steels are used.
Races and balls are high carbon
chrome steel (to provide resistance
to wear) machined and ground to
fine limits of 0.0025 mm, highly
polished and hardened.
Author - Akash Panchal 142912/18/2014
15. The Ball And Roller Bearing Consists Following Parts:-
Inner ring or race which fits on
the shaft.
Outer ring or race which fits
inside the housing.
Ball and roller arranged
between the surfaces of two
races. These provide rolling
action between the races.
The radius of the track for balls is
slightly greater 5 to 10 % than that
of the ball themselves.
Note that the rotating surfaces
rotate in opposite directions.
Cage which separates the balls
or rollers from one another.The Disadvantage of the ball and roller
bearings are high cost, they cannot be
used in half, and greater noise. Author - Akash Panchal 142912/18/2014
24. Bearing Arrangement
Shafts are generally supported by two
bearings in the radial and axial directions.
The side that fixes relative movement of the shaft and housing in the
axial direction is called the “fixed side bearing," and the side that allows
movement is called the "floating side bearing."
The floating side bearing is needed to absorb
mounting error and avoid stress caused by
expansion and contraction of the shaft due to
temperature change.
Author - Akash Panchal 1429
12/18/2014
28. Bearing fits:
Extreme fits, whether loose or tight, are not
recommended. The effect of press fits on contact angle
or radial play must be considered.
Size tolerance of the shaft and housing should be equal
to those of the bearing bore .Surface finish should be
held as close as possible.
Extreme fits will depend upon tolerances on the
bearings, shaft, and housing
Author - Akash Panchal 142912/18/2014
29. Adhesives offer several advantages in producing proper fits:
End play can be removed by applying a light external thrust load during curing
time.
Extreme fits can be eliminated, since the adhesive will fill up any reasonable
clearance.
Rotational accuracy can be improved by driving the shaft at slow speed during
cure time.
Disadvantages to using adhesives include:
Certain adhesives are attacked by lubricants or solvents.
To ensure a good bond, bearing surface, shaft, and housing must be
thoroughly clean of oil and dirt.
Adhesives may get into the bearing and cause damage.
Author - Akash Panchal 1429
12/18/2014
30. Axial positioning:
Accurate axial positioning of the shaft relative to the housing requires shoulders,
snap rings, or bearing flanges.
Shaft and housing shoulders: Diameter of a shaft or housing shoulder must be
sufficient to ensure solid seating and support for applied thrust loads, yet small
enough to avoid interference with other parts of the bearing. Fit accuracy between
shoulder and mounting diameter should be as good as bearing accuracy.
The corner between the shoulder and mounting diameter should be undercut
because undercutting provides a more accurate machining of the shoulder surface.
However, a radius is permissible if proper clearance is allowed.
Author - Akash Panchal 142912/18/2014
31. Retaining rings: Certain cautions must be observed with this
method:
Recommendations as to the groove dimensions should be followed.
Locating grooves machined into the shaft or housing must be
controlled for squareness of groove face to bearing mounting
diameter. Recommended value is 0.0002-in.
Avoid a snap ring that locates directly on the shaft or housing
diameter (no groove) if heavy thrust loads are involved.
Flanges: Squareness of face-to-bore of the housing is critical and
should be maintained to within 0.0003-in
Author - Akash Panchal 142912/18/2014
32. Classification of the sliding contact
bearing
JOURNAL BEARING
FOOTSTEP BEARING
COLLAR THRUST BEARING
Author - Akash Panchal 142912/18/2014
34. Journal bearing – in this the bearing pressure is exerted at right angles to the
axis of the axis of the shaft. The portion of the shaft lying within the bearing in
known as journal. Shaft are generally made of mild steel.
Foot step or pivot bearing – in this bearing the bearing pressure is exerted
parallel to the shaft whose axis is vertical. Note that in this case the end of the
shaft rests within the bearing.
• Thrust bearings
also known as
“collar
bearing”.
Thrust bearing – in this bearing supporting pressure is
parallel to the axis of the shaft having end thrust. Thrust
bearing are used in bevel mountings, propeller drives,
turbines, etc. note here the shaft ,unlike foot-strep
bearing passes through and beyond the bearing.
Author - Akash Panchal 1429
12/18/2014
35. Journal Bearing
• It is simply a block of cast iron
with a hole for the shaft
providing running fit. An oil hole
is drilled at the top for
lubrication.
• The main disadvantage of this
type of bearing are
• There is no provision for wear
and adjustment on account of
wear.
• The shaft must be passed into
the bearing axially, i.e.
endwise.
• Limited load on shaft and
speed of shaft is low.
Simple
journal or
solid
bearing
Author - Akash Panchal 142912/18/2014
37. Footstep or pivot bearing
It suitable for supporting a vertical shaft with axial loads.
In a footstep bearing a gun metal bush having a collar on top is placed inside the
C.I. sole. The end of the shaft rests on a gun metal disc placed at the bottom in the
bush.
The disc is prevented from rotation with the help of a pin or sung fitted in the sole.
The disc act as a thrust bearing whereas the bush fitted in the casting supports the
shaft in position. The bush can take radial loads, if any, on the shaft.
The disadvantage of footstep bearing is that it cannot be efficiently lubricated and
there is unequal wear on the bottom disc.
Author - Akash Panchal 142912/18/2014
39. Thrust bearing
A thrust bearing is a particular type of
rotary bearing. Like other bearings they
permit rotation between parts, but they are
designed to support a high axial load .
• Thrust Ball Bearings
• Cylindrical Thrust Roller Bearings
• Tapered Roller Thrust Bearing s
• Spherical Roller Thrust Bearings
Thrust
Bearings come
in several
varieties.
Author - Akash Panchal 142912/18/2014
40. A spherical roller thrust bearing A thrust ball bearing
Author - Akash Panchal 142912/18/2014
41. Bush Bearing
In this the bush of soft material like
brass or gun metal is provided and the
body or main block is made of cast iron.
Bush is hollow cylindrical piece which is
fitted in a housing to accommodate the
mating part. When the bush gets worn
out it can be easily replaced.
Author - Akash Panchal 142912/18/2014
42. Bush Bearing
The outside of the bush is a driving fit (interference fit) in the hole
of the casting where as the inside is a running fit for the shaft.
The bearing material used may be white metal (Babbit –
Tin/Cu/Lead/antimony) , copper alloy (brass, gunmetal) or
aluminum alloy.
Solid bushes are entirely made of bearing material and find the
general application. In lined bush as the bearing material is applied
as a lining to a backing material .
Applications: turbines, large diesel engines etc
Author - Akash Panchal 142912/18/2014
44. Plummer block or Pedestal bearing
It is a split type of bearing. This type of bearing is
used for higher speeds, heavy loads and large sizes.
• Cast iron pedestal or block with a sole
• Brass or gun-metal or phosphorus-bronze
“Brasses”, bushes or steps made in two halves.
• Cast iron cap.
• Two mild steel bolts and nuts.
The component of
the bearing:
This bearing facilitates the placements and removal
of the of the shaft from the bearing.
Author - Akash Panchal 142912/18/2014
47. Prevention of rotation of brasses
The steps are made octagonal on the outside and they are
made to fit inside a corresponding hole.
A snug is cast on the lower brass top which fits a
corresponding hole in the casting. The oil hole is drilled
through the sung.
Snug are provided at the side, and the corresponding
recesses left in the casting
The steps on the lower brass are made rectangular on the
outside and they are made to fit inside a corresponding
hole.
Author - Akash Panchal 142912/18/2014
49. Bearing Life Calculation
Calculations Rolling bearings Bearing life
Equivalent bearing loads and basic rating life
Minimum load
Viscosity
Dynamic axial load carrying capacity of cylindrical roller bearings
Frictional moment - power loss
Relubrication intervals
Grease life for sealed deep groove ball bearings
Bearing frequencies
Influence of load and oil viscosity on reference speed/permissible speed
CARB, axial displacement - misalignment
CARB, axial displacement - clearance
CARB, free space on the sides of the bearing
Shaft tolerances and resultant fits
Housing tolerances and resultant fits
SKF Bearing Select
SKF DialSet
Plain bearings Spherical plain bearings and rod ends - Basic rating service life
Frictional moment
Composite dry sliding bearings - Basic rating service life
Author - Akash Panchal 142912/18/2014
50. Advantages and disadvantages of the
plain bearing
Plain bearing are cheap to produce and have noiseless
operation. They can be easily machined, occupy small
radial space and have vibration damping properties.
Also they can cope with tapped foreign matter.
Disadvantages are they require large supply of
lubricating oil, they are suitable only for relative low
temperature and speed; and starting resistance is much
greater than running resistance due to slow build up of
lubricant film around the bearing surface.
Author - Akash Panchal 142912/18/2014