The American Gear Manufacturers Association sells digital downloads. A search for "218.01" on their website will show the document as "historical" or "withdrawn." Price typically ranges from for a PDF. This is the only 100% legal, error-free source.
However, obtain it correctly—buy the historical PDF from AGMA’s official store, access it via a university subscription, or borrow through interlibrary loan. Avoid dubious “free” websites that provide corrupted, incomplete, or counterfeit versions. Agma 218.01 Pdf
The appendices contain critical reference data: error-free source. However
The primary purpose of this standard is to calculate the load-carrying capacity of gears based on two main failure modes: Pitting Resistance access it via a university subscription