SYMPOSIA PAPER Published: 01 January 2001

A Spiral Orbit Rolling Contact Tribometer


We describe a rolling contact tribometer exhibiting realistic, reproducible, quantifiable performance over a wide range of contact conditions. These conditions are variable to match a calculated severity integral for real ball bearing contacts. First-order kinematics in the tribometer are described by published ball bearing equations. The tribometer exhibits second-order mechanical contact effects found in real rolling contacts. It has elevated temperature, purged atmosphere, and vacuum capabilities. Results from the tribometer are shown to be directly applicable to a variety of situations in the real world.

Author Information

Kingsbury, E
Interesting Rolling Contact, Walpole, Massachusetts
Pepper, S
NASA-Glenn Research Center, Cleveland, Ohio
Price: $25.00
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Developed by Committee: D02
Pages: 68–80
DOI: 10.1520/STP10500S
ISBN-EB: 978-0-8031-5453-7
ISBN-13: 978-0-8031-2867-5