5at Train

  The Class 5AT Advanced Technology Steam Locomotive Project   

New Generation Steam -- The Ultimate 4-6-0 -- 380 mile range -- An Engineering Legacy 

Lubrication and Tribology

Page Under Development

This page is still "under development". Please contact Chris Newman at webmaster@5at.co.uk if you would like to help by contributing text to this or any other page.'


The Oxford Dictionary defines tribology as the branch of science and technology concerned with surfaces in relative motion, as in bearings. It is therefore inseparably associated with the subject of lubrication.

Porta was the first engineer to apply the science of tribology to the design of steam locomotives, being an essential component of the application of the high steam temperatures that Porta recognized as being needed to deliver improved cylinder performance.



--------------------- work in progress as at 10th Mar 2011 -----------------------------------