ABMA Webinar - Effect of Geometry on Roller Bearing Performance
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When: 4/14/2015
1:00 PM

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Title: Effect of Geometry on Roller Bearing Performance 

Date: April 14, 2015

Time: 1:00 – 2:00 pm EST


This webinar will review how to calculate the maximum element load, contact ellipse, shear stress and contact stress in rolling element bearings.  In addition, it explores how roller / raceway crown and misalignment can affect these values.  

Learning Objectives

Participants completing this webinar will be able to:

  • Identify contact and maximum sheer stress in roller bearings.
  • Define maximum bearing element load, and identify the difference between point and line contact.
  • Understand the difference between center and edge stress in roller bearings.
  • Define how shaft and housing misalignment can result in edge stress which effects bearing life.
  • Identify the different types of crowning applied to roller bearings to enhance bearing performance.



Rick Janssen is a Staff Engineer at NTN Bearing Corporation of America in Mt. Prospect, IL.  He received a B.S. degree in Mechanical Engineering from Iowa State University in 1996.  He has been a Senior Design Engineer for NTN-Bower tapered and cylindrical roller bearing products for the past 14 years.  Prior to his work in bearing design he served as an Applications Engineer for NTN working with automotive accessory equipment manufacturers.  Rick has also conducted numerous in house and external training programs, educating bearing customers on the various aspects of bearings and applications.  Rick is also a member of ASM International, SAE and STLE.


Jim Misch, Director of Industrial Engineering, NTN Bearing Corporation