This document discusses terms used in hydrodynamic journal bearings such as diameter clearance, radial clearance, diameteral clearance ratio, and minimum oil film thickness. It also discusses methods for determining the coefficient of friction, critical pressure, and Sommerfeld number for journal bearings. The document outlines a 10 step design procedure for selecting journal bearings including calculating bearing size, pressure, clearance, characteristics number, heat generation, and material selection. It also discusses components, types, and selection procedures for rolling element bearings.
This document is about power transmission system. It's aimed those interested in learning about mechanical engineering and students who are studying various programmes in engineering. This document only deals with power transmission through flat and v-belts.
Design procedure for Cast iron pulley, Flat belt drive, V belt drive, Chain d...Dr.S.Thirumalvalavan
Title: UNIT-I; Design Procedure of Cast iron pulley, Flat belt drive, V belt drive, Chain drive & Wire ropes.
Subject Name: ME8651 - Design of Transmission Systems (DTS) B.E. Mechanical Engineering
Third Year, VI Semester
[Anna University R-2017]
Design of flywheel theory and numericals prof. sagar a dhotareSagar Dhotare
1. Introduction.
2. Coefficient of Fluctuation of
Speed.
3. Fluctuation of Energy.
4. Maximum Fluctuation of
Energy.
5. Coefficient of Fluctuation
of Energy.
6. Energy Stored in a Flywheel.
7. Stresses in a Flywheel Rim.
8. Stresses in Flywheel Arms.
9. Design of Flywheel Arms.
10. Design of Shaft, Hub and
Key.
11. Construction of Flywheel.
This document is about power transmission system. It's aimed those interested in learning about mechanical engineering and students who are studying various programmes in engineering. This document only deals with power transmission through flat and v-belts.
Design procedure for Cast iron pulley, Flat belt drive, V belt drive, Chain d...Dr.S.Thirumalvalavan
Title: UNIT-I; Design Procedure of Cast iron pulley, Flat belt drive, V belt drive, Chain drive & Wire ropes.
Subject Name: ME8651 - Design of Transmission Systems (DTS) B.E. Mechanical Engineering
Third Year, VI Semester
[Anna University R-2017]
Design of flywheel theory and numericals prof. sagar a dhotareSagar Dhotare
1. Introduction.
2. Coefficient of Fluctuation of
Speed.
3. Fluctuation of Energy.
4. Maximum Fluctuation of
Energy.
5. Coefficient of Fluctuation
of Energy.
6. Energy Stored in a Flywheel.
7. Stresses in a Flywheel Rim.
8. Stresses in Flywheel Arms.
9. Design of Flywheel Arms.
10. Design of Shaft, Hub and
Key.
11. Construction of Flywheel.
The various forces acts on the reciprocating parts of an engine.
The resultant of all the forces acting on the body of the engine due to inertia forces only is known as unbalanced force or shaking force.
This is a short description and some problems for the design of clutches.This also include the various classification in clutch and its description,use and also advantages of using these kinds of clutches.
It also includes a short view through different types of numerical problems which are solved for practising.
ME010 801 Design of Transmission Elements
(Common with AU010 801)
Teaching scheme Credits: 4
2 hours lecture, 2 hour tutorial and 1 hour drawing per week
Objectives
To provide basic design skill with regard to various transmission elements like clutches, brakes, bearings and
gears.
Module I (20 Hrs)
Clutches - friction clutches- design considerations-multiple disc clutches-cone clutch- centrifugal clutch -
Brakes- Block brake- band brake- band and block brake-internal expanding shoe brake.
Module II (17 Hrs)
Design of bearings - Types - Selection of a bearing type - bearing life - Rolling contact bearings - static
and dynamic load capacity - axial and radial loads - selection of bearings - dynamic equivalent load -
lubrication and lubricants - viscosity - Journal bearings - hydrodynamic theory - design considerations -
heat balance - bearing characteristic number - hydrostatic bearings.
Module III (19 Hrs)
Gears- classification- Gear nomenclature - Tooth profiles - Materials of gears - design of spur, helical,
bevel gears and worm & worm wheel - Law of gearing - virtual or formative number of teeth- gear tooth
failures- Beam strength - Lewis equation- Buckingham’s equation for dynamic load- wear loadendurance strength of tooth- surface durability- heat dissipation - lubrication of gears - Merits and
demerits of each type of gears.
Module IV (16 Hrs)
Design of Internal Combustion Engine parts- Piston, Cylinder, Connecting rod, Flywheel
Design recommendations for Forgings- castings and welded products- rolled sections- turned parts,
screw machined products- Parts produced on milling machines. Design for manufacturing - preparation
of working drawings - working drawings for manufacture of parts with complete specifications including
manufacturing details.
Note: Any one of the following data book is permitted for reference in the final University examination:
1. Machine Design Data hand book by K. Lingaiah, Suma Publishers, Bangalore/ Tata Mc Graw Hill
2. PSG Design Data, DPV Printers, Coimbatore.
Text Books
1. C.S,Sarma, Kamlesh Purohit, Design of Machine Elements Prentice Hall of India Ltd NewDelhi
2. V.B.Bhandari, Design of Machine Elements McGraw Hill Book Company
3. M. F. Spotts, T. E. Shoup, Design of Machine Elements, Pearson Education.
Reference Books
1. J. E. Shigley, Mechanical Engineering Design, McGraw Hill Book Company.
2. Juvinall R.C & Marshek K.M., Fundamentals of Machine Component Design, John Wiley
3. Doughtie V.L., & Vallance A.V., Design of Machine Elements, McGraw Hill Book Company.
4. Siegel, Maleev & Hartman, Mechanical Design of Machines, International Book Company
A helical gear has teeth in form of helix around the gear. Two such gears may be used to connect two parallel shafts in place of spur gears. The helixes may be right handed on one gear and left handed on the other. The pitch surfaces are cylindrical as in spur gearing, but the teeth instead of being parallel to the axis, wind around the cylinders helically like screw threads.
MAchine Design and CAD Presentation. its topic is about Hydrodynamic Journal bearings, Heat Generated in a Journal Bearing
Design Procedure for Journal Bearing
And Examples
The various forces acts on the reciprocating parts of an engine.
The resultant of all the forces acting on the body of the engine due to inertia forces only is known as unbalanced force or shaking force.
This is a short description and some problems for the design of clutches.This also include the various classification in clutch and its description,use and also advantages of using these kinds of clutches.
It also includes a short view through different types of numerical problems which are solved for practising.
ME010 801 Design of Transmission Elements
(Common with AU010 801)
Teaching scheme Credits: 4
2 hours lecture, 2 hour tutorial and 1 hour drawing per week
Objectives
To provide basic design skill with regard to various transmission elements like clutches, brakes, bearings and
gears.
Module I (20 Hrs)
Clutches - friction clutches- design considerations-multiple disc clutches-cone clutch- centrifugal clutch -
Brakes- Block brake- band brake- band and block brake-internal expanding shoe brake.
Module II (17 Hrs)
Design of bearings - Types - Selection of a bearing type - bearing life - Rolling contact bearings - static
and dynamic load capacity - axial and radial loads - selection of bearings - dynamic equivalent load -
lubrication and lubricants - viscosity - Journal bearings - hydrodynamic theory - design considerations -
heat balance - bearing characteristic number - hydrostatic bearings.
Module III (19 Hrs)
Gears- classification- Gear nomenclature - Tooth profiles - Materials of gears - design of spur, helical,
bevel gears and worm & worm wheel - Law of gearing - virtual or formative number of teeth- gear tooth
failures- Beam strength - Lewis equation- Buckingham’s equation for dynamic load- wear loadendurance strength of tooth- surface durability- heat dissipation - lubrication of gears - Merits and
demerits of each type of gears.
Module IV (16 Hrs)
Design of Internal Combustion Engine parts- Piston, Cylinder, Connecting rod, Flywheel
Design recommendations for Forgings- castings and welded products- rolled sections- turned parts,
screw machined products- Parts produced on milling machines. Design for manufacturing - preparation
of working drawings - working drawings for manufacture of parts with complete specifications including
manufacturing details.
Note: Any one of the following data book is permitted for reference in the final University examination:
1. Machine Design Data hand book by K. Lingaiah, Suma Publishers, Bangalore/ Tata Mc Graw Hill
2. PSG Design Data, DPV Printers, Coimbatore.
Text Books
1. C.S,Sarma, Kamlesh Purohit, Design of Machine Elements Prentice Hall of India Ltd NewDelhi
2. V.B.Bhandari, Design of Machine Elements McGraw Hill Book Company
3. M. F. Spotts, T. E. Shoup, Design of Machine Elements, Pearson Education.
Reference Books
1. J. E. Shigley, Mechanical Engineering Design, McGraw Hill Book Company.
2. Juvinall R.C & Marshek K.M., Fundamentals of Machine Component Design, John Wiley
3. Doughtie V.L., & Vallance A.V., Design of Machine Elements, McGraw Hill Book Company.
4. Siegel, Maleev & Hartman, Mechanical Design of Machines, International Book Company
A helical gear has teeth in form of helix around the gear. Two such gears may be used to connect two parallel shafts in place of spur gears. The helixes may be right handed on one gear and left handed on the other. The pitch surfaces are cylindrical as in spur gearing, but the teeth instead of being parallel to the axis, wind around the cylinders helically like screw threads.
MAchine Design and CAD Presentation. its topic is about Hydrodynamic Journal bearings, Heat Generated in a Journal Bearing
Design Procedure for Journal Bearing
And Examples
RELIABILITY BASED DESIGN OF A GEAR BOXIJERA Editor
Reliability is the probability that a system, component or device will perform without failure for a specified period of time under specified operating conditions. The concept of reliability is of great importance in the design of various machine members. Conventional engineering design uses a deterministic approach. It disregards the fact that the material properties, the dimensions of the components and the externally applied loads are statistical in nature. In conventional design this uncertainties are covered with a factor of safety, which is not always successful. The growing trend towards reducing uncertainty and increasing reliability is to use the probabilistic approach. In the present work a three shaft four speed gear box and six speed gear box are designed using reliability principles. For the specified reliability of the system (Gear box), component reliability (Gear pair) is calculated by considering the system as a series system. Design is considered to be safe and adequate if the probability of failure of gear box is less than or equal to a specified quantity in each of the two failure modes. . All the parameters affecting the design are considered as random variables and all the random variables are assumed to follow normal distribution. A computer program in C++ is developed to calculate the face widths in bending and surface failure modes. The larger one out of the two values is considered. By changing the variations in the design parameters, variations in the face widths are studied.
boundary lubricated plain bearings are extensively used in machines but hardly described and explained at engineering schools or in real world. here, some basics are described and explained for engineering students as well as machine designers.
Design of sliding_contact_wearing_unitiiibalram yadav
A bearing is a machine element which support another moving machine element (known as journal). It permits a relative motion between the contact surfaces of the members, while carrying the load.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
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Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
AKS UNIVERSITY Satna Final Year Project By OM Hardaha.pdf
Design of Machine Elements - Unit 5 Procedure
1. 1
KONGUNADU
COLLEGE OF ENGINEERING AND TECHNOLOGY
UNIT V
DESIGN OF BEARINGS
TERMS USED IN HYDRODYNAMIC JOURNAL BEARING
1. Diameter clearance: It the different between the diameter of journal and the
bearing. c= D-d
2. Radial clearance: it is the different between the radial of the bearing and the
journal. c1= R-r = (D-d)/2
3. Diameteral clearance ratio: It is the ratio of the diameteral clearance to the
diameter of the journal. = c/d = (D-d)/d
4. Eccentricity: It is the radial distance between the center of the bearing and the
displaced center of the bearing under load.
5. Minimum oil film thickness: It is the minimum distance between the bearing
and the journal under complete lubrication condition. It is denoted by ho and
occurs at the line of centers.
COEFFICENT OF FRICTION FOR JOURNAL BEARINGS
To determine the coefficient of friction for well lubricated full journal bearings, the
following empirical relation established by McKee based on the experimental data
Coefficient of Friction, µ =
.
+
Z- Absolute viscosity of oil
N- Speed of journal in r.p.m
p- bearing pressure on the projected bearing area
d- diameter of journal , l-length of bearing
c- diameter clearance, k- factor to correct for end leakage.
2. 2
CRITICAL PRESSURE OF THE JOURNAL BEARING
The pressure at which the oil film breaks down so the metal to metal contact
begins, is known as critical pressure or the minimum operating pressure of the
bearing. It may be obtained by the following relation.
Pressure P =
.
N/mm2
SOMMERFELD NUMBER
The sommerfeld number is also a dimensionless parameter used extensively in the
design of journal bearings. sommerfeld number= S =
HEAT GENERATED IN A JOURNAL BEARING
The heat generated in a bearing due to the fluid friction and friction of the parts
having relative motion.
Qg =WVμ
After the thermal equilibrium is reached heat will be dissipated at the outer surface
of the bearing at the same rate at which it is generated in the oil film. The amount
of heat will depend upon the temperature difference size and mass of the radiating
surface and on the amount of air flowing around the bearing. However for the
convenience in bearing design the actual heat dissipating area may be expressed in
terms of the projected area of the journal.
Heat dissipated by the bearing C- heat dissipation coefficient A- projected area of
the bearing tb-temperature of the bearing surface ta- temperature of the
surrounding air
Heat generated in bearing Hg = µWV
Heat dissipated in bearing Hd =
(∆ )
kgf-m/min
3. 3
DESIGN PROCEDURE FOR JOURNAL BEARING
Step-1 Calculate the diameter of the journal for given power
Mt =
П
×Ʈs × d3
N-mm, Where Mt =
× ×
N/mm
Step-2 Selection of L/D ratio:
Refer PSG DB 7.31 for length & bearing pressure
Step-3 Calculation of bearing Pressure:
P = load / area = W/LD
Check this value from PSG DB 7.31 table. If not satisfied change L/D
Ratio to the next value
Step-4 Selection of clearance:
From PSG DB 7.32 table Clearance ratio (C/D) can be determined
Step-5 Selection of oil:
According to oil & viscosity at operating temperature which is
preferably with in 600
to 750
c
Step-6 Calculation of bearing characteristic number (Zn/P):
It should be greater than the minimum value given in PSGDB 7.31
Step-7 Determination of Sommerfield number:
Select the minimum film thickness from PSGDB 7.40 or 7.36-7.39.then
ho value can be selected & its greater than D/4
4. 4
Step-8 Calculation of coefficient of friction:.
From PSGDB7.34,
Using Petroff &Mckee’s Equation for friction co- efficient (µ) it
can be determined.
Petroff Equation µ = 2 x 10-6
П 2
(OR)
Mckee’s Equation µ=
.
× +
Step-9 Determination of Heat generated & Dissipated:
Heat generated in bearing Hg = µWV
Heat dissipated in bearing Hd =
(∆ )
kgf-m/min (or) Hd = qA(t0-ta)
Check whether artificial cooling is needed or not.
Step -10 Diameter of bearing(Db) & material of bearing :
Db = D+C = D + (C/1000)
From PSGDB page No:7.30 Suitable material can be chosen.
COMPONENTS OF ROLLING CONTACT BEARINGS
The rolling bearing consists of four main components
(1) the inner ring,
(2) outer ring,
(3) the balls or rollers,
(4) the retainers or separators.
The inner ring is forced to fitted with machine shaft and outer ring is fitted with
machine housing. The shaft rotates because of relative rotations of balls or rollers.
The retainers is used to prevent the balls or rollers from ejecting out during
operation.
5. 5
CLASSIFICATION OF ROLLING CONTACT BEARINGS
The rolling contact bearings are classified into two major groups with respect to
their structure
(1) Ball bearings
(2) Roller bearings
Basically the structure of ball bearings are similar expect that whether the rolling
element between the inner ring and outer ring are balls or rollers. Also these ball
bearings are many types such as deep grove ball bearings, angular contact
balbearings and so on. Both type of bearing can carry radial loads and axial loads
acted individually or in combined form. Generally the ball bearings are used for
light loads and the roller bearings are usually used for heavier loads. Also in the
case of ball bearings the nature of contact is the point contact hence the friction
produced is very less compared to roller bearings where the nature of contact is the
line contact which produce more friction.
Figure ( Types of radial ball bearing )
6. 6
SELECTION OF BEARINGS FOR STEADY LOADING The size of bearing
required is judged by the magnitude and nature of applied load, life and reliability.
The bearing load is composed of weights involved forces derived from power
transmitted and additional force based on method of operation. Bearing Life:
=
Where, C- basic dynamic load rating
L- life of bearing in million revolutions
L10- life of bearing for 90% survival at 1 million revolutions
P- Equivalent load
k- exponent (3 for ball bearing, 10/3 for roller bearings)
P=(XFr+YFa)S Fr- radial load
Fa- axial load
X- radial load factor
Y- axial load factor
S- service factor
SELECTION OF BEARING FOR VARIABLE LOADING
For variable speed
Pm = [ P1
3
n1 + P2
3
n2 + P3
3
n3 + ….. + Pn
3
nn ] / Σn
For variable time
Pt = [ P1
3
t1 + P2
3
t2 + P3
3
t3 + ….. + Pn
3
tn ] / Σt
P1- constant load during n1 revolution (or) during the period of time t1
P2- constant load during n2 revolution (or) during the period of time t2
Σn=n1+n2+n3+…+nn
Σt=t1+t2+t3+…+tn
7. 7
DESIGN PROCEDURE FOR BALL BEARING:
STEP-1
Determine the radial & Axial Forces Acting on the bearing & shaft
Fr,Fa,D
STEP-2
Determine radial & Thrust load factor (x,y) from PSGDB 4.4
It depends on 2 ratio’s &
For d refer PSGDB 4.13
Select & take Interpolation values, Find the e values,
Then
If >e (or) < e, Determine X,Y values from PSGDB 4.4
STEP-3
Find Load:
For Equivalent load P refer PSGDB 4.2
STEP-4
Find Speed, Life hrs& determine C/P ratio
STEP-5
Determine C, Values according to the bearing life hours
STEP-6
Compare with given C value, which matches on bearing selected. If determined C
value is more than the given values, then the selected bearing is safe.