: Angled-toothed gears designed for smooth, high-speed, and high-load performance.
(Load Distribution Factor): Accounts for misalignment and uneven loading across the face width of the gear [1]. Cfcap C sub f
Last updated: October 2025. This article is for informational purposes. Always refer to the official standard document for legal and technical compliance.
The document is a foundational gear rating standard titled "Rating the Pitting Resistance and Bending Strength of Spur and Helical Involute Gear Teeth." It established the core formulas and factors (such as load distribution, dynamic, and size factors) used to determine the durability and strength of gears. Key Papers & Documents agma 21801 pdf
The "AGMA method" introduced in 218.01 involves modifying the transmitted tangential load with several empirical and analytical factors to determine the allowable stress:
If you're interested in learning more about gear design and AGMA standards, I recommend checking out:
What are you designing for (e.g., aerospace, industrial)? : Angled-toothed gears designed for smooth, high-speed, and
Engineering students, gear designers, and maintenance professionals frequently search for the to understand the foundational physics behind gear stress analysis. Although it has been officially withdrawn and superseded by modern standards, its core principles remain embedded in software programs and modern engineering textbooks worldwide. The Core Philosophy of AGMA 218.01
: 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.
The standard applies specifically to spur and helical involute gear teeth . This article is for informational purposes
For the most current and authoritative information, you should refer to the and AGMA 908-B89 standards directly from official sources like the AGMA or ANSI webstores.
AGMA 218.01 was not a static document; its values for critical factors were revised over time. As noted in descriptions of its successor, these revisions specifically targeted the , Dynamic Factor , and Load Distribution Factor . The standard was formally withdrawn on June 11, 2023 and is now considered a historical document. It was fully replaced by a new suite of standards:
