A short course in:
Rolling Element Bearing Technology
July 25-27, 2005
Cleveland Ohio
Rolling Element Bearing Technology Registration Form
Objectives:
To provide product engineers, machine designers, and
manufacturing engineers with better appreciation for the design, application,
life, and use of rolling element bearings.
Who Should Attend:
This course is intended for engineers involved in product
design, materials selection, failure analysis, product endurance testing, and
process control.
Program Schedule:
First Day:
8:00am Registration/Check-in
Bingham Bldg., Room 103
Case Western Reserve University
10900 Euclid Ave.
Cleveland, OH 44106
8:20am Welcome Robert L. Mullen, Chair Dept. of Civil
Engineering
Case Western Reserve University
Each Day:
8:30-12:00 Lecture and Discussion
12:00 Noon Lunch
1:00-4:30 Lecture and Discussion
Final adjournment on last day at 3:30pm.
Breaks will be conveniently scheduled at mid-morning and
mid-afternoon.
Outline:
Applications
Ball Bearings
- Angular Contact
- Deep Groove
Roller Bearings
- Cylindrical
- Spherical
- Needle
- Tapered
Roller Bearing Standards
ANSI/ABMA/ISO
ABEC
RBEC
Metric v. Inch
Manufacturing Tolerances and Internal Clearances
Dimensions
Internal Radial (Diametrical)
Clearance
- Free or Bench
- Mounting
- Operating
Failure Modes Related to Bearing Life
Subsurface -- Origin spalling
- Inclusions and Carbides
- Subsurface Structural Changes
- Subcase Fatigue (Case Crushing)
Surface -- Origin spalling
- Point Surface Origin
- Geometric Stress Concentration
- Microspalling
Transverse Cracking (Cross-section fracture)
True and False Brinelling
Misalignment
Excessive Thrust
Lubrication
Heating and Thermal Preload
Roller Edge Stresses
Bearing Life and Reliability
Lundberg-Palngren Theory and Application
Weibull Analysis
ANSI/ABMA Standards
Life Factors
Manufacturers' Catalogue Methods
Remanufactured Bearings and Bearing Reuse
Warranty Considerations
Bearing Loads and Stresses
Hertz Contact Stress
Subsurface Stress and Critical Depth
Line, Point, and Elliptical Contact
Heavy Load and Distortion
Misalignment
- Ball Bearings
- Roller Bearings
Residual and Hoop Stresses
Axial Loads and Cylindrical Roller Bearings
Rotordynamic Loads
Centrifugal Loads
Static Capacity
Bearing Lubrication
Type of Lubrication
Lubrication Selection
- Liquid
- Grease
Elastohydrodynamic (EHD) Lubrication
Effect of Contaminants
- Wear Particles
- Water
Materials and Processing
Bearing Materials
- Through-Hardened Steels
- Corrosion-Resistant Steels
- Nonferrous Materials
- Ceramic Bearings
- Ceramic Hybrid Bearings
Material Processing
- Melting Practice
- Metal Working
- Heat Treatment
- Material Hardness
- Carbide Effects
- Compressive Residual Stress
Coatings
Bearing Kinematics
Low Speed v. High Speed
Skidding
Time Transient
Characteristic Frequencies
Speed Limitations
Multi Bearing Systems
Statically Indeterminate
Fixed Bearings
Floating Bearings
Load Sharing
Three Degrees of Freedom
Five Degrees of Freedom
Computer Aided Design of Roller Bearings
Typical Bearing Codes
Design Variabes
Computer Optimized Ball and Roller Bearing
Applications
Introduction to Computer Bearing Analysis (COBRA)
Single Bearing and Multi Bearing Analysis
Bearing Types
- Iterative Nature
- Sign Convention
- Example
Special Topics*
Industrial Application
Aerospace Application
Specialized Lubricant and Lubrication Requirements
Application Problem and Solutions
*Based upon attendees' needs and interests
Course Materials:
The STLE Text "Life Factors for Roller Bearings" will be
used as a reference and is included in the price of the seminar. An
extensive set of class notes are provided.
Speakers:
Erwin V. Zaretsky, P.E.
Mr. Zaretsky is a noted speaker, writer, and consultant to
both government and industry. He is currently Chief Engineer for Structures,
NASA Glenn Research Center, Cleveland Ohio and Adjunct Professor at Case. He
was formerly head of the NASA Bearing, Gearing and Transmission Section,
responsible for most of the NASA mechanical component research for air
breathing engines and helicopter transmissions. He has over 45 years of
experience in Mechanical Engineering related to rotating machinery and
tribology. He has performed pioneering research in rolling-element fatigue,
lubrication and probabilistic life prediction. His work resulted in the first
successful 3 million DN bearing and has received four I-R 100 awards. He is
also a recipient of the NASA Medal for Exceptional Engineering Achievement and
the Astronaut Silver Snoopy Award for contributions to the space program. He
has written over 180 technical papers and books and has lectured widely
throughout North America, Europe, Asia and the Middle East. He has taught
machine design as a member of the adjunct faculty at Cleveland State University
and in 2003 Visiting Professor at Meiji University, Japan.
He is a Fellow of both ASME and the STLE. He has also held
national and local offices in these technical societies. Under his
chairmanship, the Rolling-Elements Committee of the ASME authored the first
Life Adjustment Factors for Ball and Roller Bearings - An Engineering Design
Guide. In 1992 the STLE first published an authoritative bearing text, STLE
Life Factors for Rolling Bearings of which he is the editor and co-author. He
is also the editor and co-author of the comprehensive text, Tribology for
Aerospace Applications, published in 1997. His broad experience, talents, and
contributions have provided him with a rare combination to put together a
comprehensive course related to ball and roller bearings.
Joseph V. Poplawski, P.E.
Mr. Poplawski, who is President of J. V. Poplawski and
Associates has over40 years experience in mechanical engineering. He
specializes in bearings and lubrication problems, finite element stress,
thermal and dynamic analysis of mechanical equipment, and rotating machinery.
His clients are from the aerospace, steel, cement, mining, manufacturing,
utilities, and medical industries. He also serves as an expert witness in
product liability litigation cases.
Mr. Poplawski has lectured and taught rolling bearing
technology throughout the U.S. and Canada. His early professional experience
includes bearing analysis and design at United Technologies Pratt &
Whitney, AVCO-Lycoming, and Bethlehem Steel Corporation. He holds a BSME from
Penn State University and MS degree in Applied Mechanics from RPI. Mr.
Poplawski is a member of ASME, STLE, and AISE and has served as session
chairman, technical committee member, and on several meeting planning
committees. As a member of the STLE Life Factors Committee he co-authored STLE
Life Factors for Rolling Bearings, a comprehensive bearing text first published
in 1992. He is the developer of 3 widely used bearing codes for commercial,
industrial and aerospace applications.
Discount available if three or more enroll from one
company.
CASE reserves the right to amend the program should
circumstances warrant such action.
In the event of course cancellation, Case Western Reserve
University will refund course fees. Liability for course cancellation is
specifically limited to the amount of pre-paid course fees and excludes any
incidental or consequential damages.
General Information
Enrollment: Course enrollment is limited. Please
reserve your place now!
Registration Deadline: July 11, 2005
Fax enrollment form to: (216) 368-5229 or
Mail enrollment form to address below.
Fee Covers: Notebook, program materials,
break refreshments and lunches. Lodging and other meals NOT included.
A Certificate of Participation is presented to each registrant. Proceedings are
not published.
Refunds and Cancellations: There is a $50
administrative fee for any registration cancellations. To cancel, you must call
our department at (216) 368-2952 seven (7) working days prior to the
program start date to obtain a cancellation number.
If you cancel less than seven working days prior, or the above procedure
is not followed, you will be liable for the full fee. Enrollment substitutions
may be made at any time.
Location: This program will be held at:
Case Western Reserve University
Bingham Bldg., Room 103
10900 Euclid Ave.
Cleveland, OH 44106
Lodging: Please make your own lodging
arrangements at the facility of your choice. Local hotel information can be
found at http://www.cwru.edu/menu/lodging/.
Please advise us at the time of registration if you are physically challenged
and require special accommodations. All requests will be kept confidential.
Suggested Attire: Casual business dress
is appropriate. Please be prepared for a moderate temperature variation in the
seminar room.
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