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The cover of the May 2025 TLT, which shows an up close photo of a greased ball bearing.Tribology & Lubrication Technology
May 2025


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FEATURES

Golden oil pouring from a black bottle.INDUSTRY INSIGHTS (STLE MEMBER BONUS CONTENT)
Oil drain levels
Consumer perceptions and brand positions create a lot of confusion in the marketplace, but what does the data say?
 

A photo of a smiling woman.

20 MINUTES
20 Minutes With Kathleen Havelka
This R&D executive talks about advancing sustainable solutions and inspiring the next generation in lubricants.

Green liquid pouring from a white bottle.MARKET TRENDS

Automotive cooling fluids market
Automotive cooling fluids are stepping up to support changes in the automotive industry.

SI base unitsLUBRICATION FUNDAMENTALS
The metric system
The world formally adopted the metric system 150 years ago this month. Can we measure everything with just seven units?

A science lab set up with an Erlenmeyer flask.WEBINARS

Going under the microscope: Fluid testing, analysis and techniques
Microscopic particle analysis is a valuable addition to a laboratory’s toolbox of techniques for tracking down the source and severity of fluid problems before they get out of hand. 

A photo of some grease on a fingertip, ready to apply to machinery.FEATURE ARTICLE

Lubricating grease testing
Challenges have been identified with ASTM D2596 test method’s repeatability and reproducibility.

A digital communication experiment setup.TECH BEAT I 

Improved digital communication of industrial machines
Transmissions operating in the sub-tetrahertz range afford users the ability to have industrial machines communicate accurately and without interference.

TECH BEAT II 

Role of friction in developing wearable fabrics that generate electricity
Coating amphiphiles onto tribopair combinations of fibers increase triboelectric output without sacrificing wearability.

A graphic that says "STLE sounding board" with 4 boxes. The last box has a red checkmark.SOUNDING BOARD 

Lubricant compatibility
Readers sound off on lubricant compatibility.


COLUMNS


PRESIDENT’S REPORT                                         

STLE local section visits


FROM THE EDITOR

Supercommunicators


HEADQUARTERS REPORT

Empowering the next generation of tribologists

CAREER COACH

Should you change jobs or try to improve your current job situation?

WORLDWIDE

Insects use lubricants to reduce friction and wear