What is tribology?
Tribology is the study of science and engineering of interacting surfaces in relative motion. It includes the study and application of the principles of friction, lubrication and wear. Tribology is a branch of mechanical engineering and materials science.

Tribology’s economic and commercial impact is vast. The science reduces energy use, lowers the cost of maintenance and replacement, develops new technology, and solves resource problems, such as the lack of clean water. Proper tribological procedures save an estimated 1.3% to 1.6% of a nation’s gross domestic product—a savings of hundreds of billions of dollars (U.S. currency) in larger countries. Virtually every nation has realized it cannot afford to overlook the economic, industrial, and commercial advantages of tribology. Consequently, tribology is a science that is constantly being advanced by thousands of researchers around the world. Lubrication engineering is the practical application of that science, generally in the development of lubricants and their proper usage and maintenance. 

What is STLE? 

STLE, one of the largest professional societies in the field, serves 15,000 industry professionals worldwide.

To advance the science of tribology and the practice of lubrication engineering in order to foster innovation, improve the performance of equipment and products, conserve resources and protect the environment.

Online webinars, education courses and professional certification programs offer opportunities for continuing education to enhance your career and create value for your company.


STLE organizes, supports, co-sponsors and hosts meetings to provide the tribology and lubrication communities an opportunity to network, exchange ideas and information.

Educating technical professionals to compete in the global business environment is STLE's core mission of serving as a trusted provider of education and a workforce development partner.

STEM programs, scholarships and student outreach programs are a cornerstone to communicating the value of tribological innovations to the next generation of scientists and engineers.

In the Spotlight


10 Particle Analysis Tests (Posted March 15, 2017)
Whatever the test and test frequency, the goal for end-users is cost-effective machine reliability at the lowest cost. 
Read More >

Lubricant Contamination Control (Posted March 15, 2017)
If you can identify the source, you can create a strategy for dealing with it.
Read More >

Materials in Motion (Posted March 15, 2017)
Tribologists will be among scientists and researchers creating a sustainable future. 
Read More >


Personalize Your Education. Advance Your Career.
STLE Learning Pathways is a new online resource library for lubrication industry professionals to help identify, align and target their education and career development needs with access to technical articles, courses, webinars and books that will help them better serve their customers and employers. 
Learn More >


Trends in Tribology and Lubrication Engineering: Industry Leader Predictions Report

The Trends in Tribology and Lubrication Engineering: Industry Leader Predictions Report evaluates the impact of changes in industry, technology and the economy on the field. The 20-page report is based on a year-long study of nearly 1,000 industry experts surveyed with the goal of tapping into their collective wisdom and insight and drawing conclusions about the future of tribology and lubrication engineering. 
Order your free copy >

Report on Emerging Issues and Trends

STLE’s Report on Emerging Issues and Trends, is the culmination of a multi-phase research effort to evaluate trends and predict future developments impacting tribology and lubrication engineering. The research encompasses the global opinions and experiences of nearly 1,000 tribologists and lubrication engineers who participated in the project as advisors, interview and focus group participants, and survey respondents. Order your free copy >


Annual Meeting Housing
(Posted March 23, 2017)

Please call STLE HQ at (847) 825-5536 for housing assistance.

Renewable energy expert to address STLE members

(Posted Feb. 28, 2017)

NREL's Dr. Robert Thresher named keynote speaker at 2017 STLE Annual Meeting in Atlanta.

Plenary speakers take shape for 6th World Tribology Congress (WTC 2017)
(Posted Feb. 6, 2017)

Get the latest conference and registration information about WTC 2017 in Beijing, China, Sept. 17-22. 

Upcoming Events

Wear of Materials 2017
Long Beach, CA | March 26-30

Tribology of Fundamentals Workshop
University of Akron (OH) | March 27-29

STLE Northern California Section Meeting
Berkeley, CA | March 29

SAE 2017 World Congress
Detroit, MI | April 4-6

STLE Northern California Section Education Seminar
Oakland, CA | April 5

STLE Featured Videos