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SAE ARP6255

Aviation Lubricant Tribology Evaluator (ALTE) Method to Determine the Lubricating Quality of Gas Turbine Lubricants
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SAE ARP6255

Aviation Lubricant Tribology Evaluator (ALTE) Method to Determine the Lubricating Quality of Gas Turbine Lubricants

PUBLISH DATE 2013
PAGES 9
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Employing ā€˜ball-on-cylinder’ philosophy, a non-rotating steel ball is held in a vertically mounted chuck and using an applied load is forced against an axially mounted steel cylinder. The test cylinder is rotated at a fixed speed while being partially immersed in a lubricant reservoir. This maintains the cylinder in a wet condition and continuously transports a lubricating film of test fluid to the ball and cylinder interface. The diameter of the wear scar generated on the test ball is used as a measure of the fluid’s lubricating properties. The apparatus can be used, by adjusting the operating conditions, to reproduce two different wear mechanisms; mild and severe wear, the ALTE therefore has the ability to assess a lubricant’s performance in that regard. These mechanisms are described below.
SDO SAE: SAE International
Document Number ARP6255
Publication Date March 15, 2013
Language en - English
Page Count 9
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
March 15, 2013 ARP6255 Revision