ANSI/AGMA 2009-B01 pdf free download.American National Standard – Bevel Gear Classification, Tolerances, and Measuring Methods.
Tolerance tables are provided in annex D for those who prefer to use tables rather than computations for the values of the tolerances that define the accuracy of gearing. These tables are calcu’ated from the equations in 7.2.
1.3 Measuring methods and practices
Measuring methods and practices are included to promote uniform measurement procedures (see clause 5). These methods permit the user to conduct measuring procedures which are accurate and repeatable to a degree compatible with the specified accuracy. Experienced personnel, with calibrated instruments in suitable surroundings, are required.
1.4 ExceptIons
This standard does not apply to enclosed gear unit assemblies, including speed reducers or increasers, gear motors, shaft mounted reducers, high speed units, or other enclosed gear units which are manufactured for a given power, speed, ratio or application.
Gear design is beyond the scope of this standard. The use of the accuracy grades for the determination of gear performance requires extensive experience with specific applications. Therefore, the users of this standard are cautioned against the direct application of tolerance values to a projected performance of unassembled (loose) gears when they are assembled. Refer to the latest AGMA Publications Index for applicable standards.
NOTE: Tolerance values for gears outside the limits stated in this standard should be established by determining the specific application requirements. This may require setting a tolerance smaller than calculated by the formulas in this standard.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on the American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed.
ANSI/AGMA 1012- F90. Gear Nomenclature, Definitions of Terms with Symbols
ANSI/AGMA 2000-A88, Gear Classification and
Inspection Handbook – Tolerances and Measuring
Methods (or Unassembled Spur and Helical Gears
(Including Metric Equivalents)
3 Symbols, terminology and definitions
The symbols, terminology and definitions pertaining to the tolerances and inspection of bevel gear teeth are listed here for use in this standard. For other definitions of geometric, measurement and toler – ance terms related to gearing, see ANSI/ AGMA 1012- F90 and ANSI/AGMA 2005 . C96.ANSI/AGMA 2009 pdf download.