AGMA 2015-A01 is obsolete. The current active standard for gear accuracy (based on index, pitch, profile, lead, and runout) is:
When implementing this standard, engineers must explicitly state the AGMA 2015 grade on technical drawings. A typical callout looks like this: Inspection and CMM Integration
) : The total variance of the actual tooth profile from the ideal involute shape within the functional evaluation zone. Helix Total Deviation ( Fβcap F sub beta
Gear manufacturing technology has evolved significantly since 2002. Furthermore, the global supply chain demands a single, unified tolerance system to avoid confusion. The industry has largely moved toward the ISO 1328 series of standards for cylindrical gear accuracy. AGMA itself has started publishing standards that adopt ISO methods directly. The radial measurement counterpart, ANSI/AGMA 2015-2-B15 , is a more recent standard that establishes a classification system for radial composite deviations, using tolerance classes like R20 to R30.
: The standard strongly recommends using the companion document AGMA 915-1-A02 for specific inspection practices and filtering techniques. 4. Practical Impact on Manufacturing Quality Control agma 20151a01 pdf
Reserved for highly demanding applications such as aerospace propulsion, high-speed turbines, medical devices, and precision military instrumentation. Includes all requirements of the .
The standard defines a classification system ranging from .
The standard defines ten grades of accuracy. The lower the number, the higher the precision of the gear. This allows designers to specify a grade based on the operating speed, load, and noise requirements of the gear system. 2. Tangential Measurements
Why has this standard largely supplanted older methods in high-precision sectors? The answer lies in . AGMA 2015-A01 is obsolete
If you only need general guidance (not the full copyrighted standard):
ANSI/AGMA 2015-1-A01 is a technical standard titled "Accuracy Classification System - Tangential Measurements for Cylindrical Gears."
: Accuracy Classification System - Tangential Measurements for Cylindrical Gears. Approval Date : August 1, 2002.
: Under the old AGMA 2000-A88 framework, gear quality was divided into 13 classes numbered Q3 through Q15 , where a higher number meant higher precision . AGMA 2015-1-A01 entirely reversed this system to match international conventions. It offers 10 accuracy grades numbered A2 through A11 , where smaller numbers indicate smaller tolerances and tighter precision . Helix Total Deviation ( Fβcap F sub beta
The standard defines specific geometric tolerances that must be verified during the quality control process: Profile Tolerance ( fαf sub alpha
As a companion to the accuracy standard, provided a code of practice for the inspection processes and instrumentation relevant to the tangential deviations defined in 2015-1-A01. Users were instructed to have a copy of this document for full implementation.
): Evaluates the alignment of the tooth across the face width. Correct helix geometry ensures even load distribution across the gear tooth. Pitch/Index Tolerance ( fptf sub p t end-sub