While AGMA 218.01 is a historic standard, it is essential to note that it has been superseded. In the continuous pursuit of better global alignment and more rigorous statistical analysis, AGMA transitioned to the ANSI/AGMA 2015 series (specifically ANSI/AGMA 2015-1-A01).
As AGMA moved toward international harmonization with ISO 6336, significant differences emerged: agma 21801 pdf
: AGMA publishes various standards and guidelines for gears, including those for gear geometry, material, and performance. If "AGMA 21801" refers to a specific standard or publication by AGMA, it might relate to gear manufacturing, inspection, or performance criteria. While AGMA 218
AGMA 218.01 PDF: The Definitive Guide to Legacy Gear Rating Standards If "AGMA 21801" refers to a specific standard
The standard mandates that you must state on the drawing both the grade and the inspection instrument type (e.g., "AGMA 218.01 Class 10, single-flank rolling test"). Without specifying the method, the tolerances are ambiguous.
Calculated using Hertzian contact stress formulas to prevent surface fatigue.