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SAE ARP6255A
Aviation Lubricant Tribology Evaluator (ALTE) Method to Determine the Lubricating Capability of Gas Turbine Lubricants
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STANDARD published on 1.5.2025
The information about the standard:
Designation standards: SAE ARP6255A
Publication date standards: 1.5.2025
SKU: NS-1221730
Country: American technical standard
Category: Technical standards SAE
Annotation of standard text SAE ARP6255A :
Employing “ball-on-ring” philosophy, a nonrotating steel ball is held in a vertically mounted chuck and, using an applied load, is forced against an axially mounted steel rotating ring. The test ring is rotated at a fixed speed while being partially immersed in a lubricant reservoir. This maintains the ring in a wet condition and continuously transports a lubricating film of test fluid to the ball and ring 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. Therefore, the ALTE can assess a lubricant’s performance in that regard. These mechanisms are described below.
SUBFILE: Aerospace
TYPE OF DOCUMENT: Aerospace Standard
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