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AGMA: American Gear Manufacturers Association

AGMA, the American Gear Manufacturers Association, is a nonprofit organization that develops and publishes standards covering the manufacturing of gears. Headquartered in Alexandria, United States, AGMA standards are spread by its over 450 member companies, located in over 30 countries. Furthering unity within its field, AGMA holds its industry's trade show, as well as an assortment of smaller conferences. AGMA also serves as the administrator for the U.S. TAGs (United States Technical Advisory Group) to ISO/TCs 14 and 60 (International Organization for Standardization/Technical Committee). Standards from AGMA are available both individually, directly through the ANSI webstore, and as part of a Standards Subscription. If you or your organization are interested in easy, managed, online access to standards that can be shared, a Standards Subscription may be what you need - please contact us at: or 1-212-642-4980 or Request Proposal Price.

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ANSI/AGMA 2000-A88

Gear Classification and Inspection Handbook - Tolerances and Measuring Methods for Unassembled Spur and Helical Gears (including Metric Equivalents)

Correlates gear quality levels with gear tooth tolerances. Provides information on manufacturing procedures, master gears, measuring methods and practices. Appendix material provides guidance on specifying levels and information on additional methods of gear inspection. Partial replacement of AGMA 390.03.

ANSI/AGMA 1010-F14 (R2020)

Appearance of Gear Teeth - Terminology of Wear and Failure

Abstract: This nomenclature standard identifies and describes the classes of common gear failures and illustrates degrees of deterioration.

ANSI/AGMA 1010-F14 (R2020)

Appearance of Gear Teeth - Terminology of Wear and Failure

Abstract: This nomenclature standard identifies and describes the classes of common gear failures and illustrates degrees of deterioration.

ANSI/AGMA 2015-1-A01 (R2014)

Accuracy Classification System - Tangential Measurements for Cylindrical Gears

This standard, for spur and helical gearing, correlates gear accuracy grades with gear tooth tolerances. It provides information on minimum requirements for accuracy groups as well as gear measuring practices. Annex material provides guidance on filtering and information on comparison of gear inspection methods. Users of this standard should have a copy of the companion information sheet, AGMA 915-1-A02.

ANSI/AGMA 6022-D19

Design Manual for Cylindrical Wormgearing

This design manual covers the design of fine and coarse pitch cylindrical wormgearing operating at right angles and primarily made as gear sets to be incorporated into other machines and mechanisms. Many of the design procedures are also incorporated in enclosed drives. Measurements using a double flank tester are not included (see ISO/TR 10064-2). This document only applies to involute gears.

ANSI/AGMA 2002-D19

Tooth Thickness and Backlash Measurement of Cylindrical Involute Gearing

This standard establishes the procedures for determining the specification limits for tooth thickness of external and internal cylindrical involute gearing. It includes equations and calculation procedures for the commonly used measuring methods. A specific tooth thickness specification limit can be established from the design thickness or from another tooth thickness measurement. The procedures can be used with an established design tooth thickness, or with actual tooth thickness dimensions. The effect of tooth geometric quality variations on tooth thickness dimensions is discussed. Calculations for backlash are included, and are based on the specified tooth thickness, center distance, and tolerances. SCOPE This standard establishes the calculation procedures for determining specification limits for external and internal cylindrical involute gearing when the desired tooth thickness is known. This standard also shows the relationships between backlash and the tooth thickness, center distance, and tooth deviations in a pinion and gear mesh. FOREWORD [The foreword, footnotes and annexes, if any, in this standard are provided for informational purposes only and are not to be construed as a part of AGMA Standard 2002-D20, Tooth Thickness and Backlash Measurement of Cylindrical Involute Gearing.] This Standard presents calculation procedures for determining tooth thickness dimensions of external and internal cylindrical involute gearing. It supersedes AGMA 231.52, Inspection – Pin Measurement Tables for Involute Spur Gears. This Standard has been prepared to consolidate previously published AGMA tooth thickness information, to add more information on internal and helical gears and to add details on more measurement methods. Previous AGMA publications have presented this information in tabular form, calculated for 1 DP and standard tooth proportions, with adjustment factors for nonstandard conditions. This Standard is arranged for direct calculation of the desired results, to eliminate the intermediate calculation steps and interpolation previously required. The study of tooth thickness and backlash has been a major interest of gear technicians throughout the history of the industry. In the last fifty years, many clarifications and contributions have been made by Buckingham, Candee, Leming, Vogel, Wildhaber and others. Their work is consolidated here, without further attribution, and the work of more recent contributors is added where it improves the presentation. In this edition of ANSI/AGMA 2002-C16, the concept of functional tooth thickness has been broadened, and the treatment of the effects of tooth profile, pitch, lead, and runout deviations on tooth thickness dimensions has changed. This edition uses a direct calculation of measured tooth thickness from a nominal circular tooth thickness, and a clear distinction is made between measurement methods for nominal and functional tooth thickness. A section on the calculation of backlash was added, and the effects of tolerances are included in the calculation of backlash. As a result of these changes, the title of this standard has been revised to reflect the new content. An annex was added to provide sample calculations. ANSI/AGMA 2002-D19 is a revision of ANSI/AGMA 2002-C16. It was created to update: · equation 87 – in the enominator minus was changed to plus; · equation 104 - removed absolute value signs around the first and third z, and; · corrected the calculated value of equation 113 in E.3.7. The first draft of ANSI/AGMA 2002-D19 was created in September 2018. It was approved by the membership on May 17, 2019 and as an American National Standard on December 9, 2019. Suggestions for improvement of this information sheet will be welcome.

ANSI/AGMA 9002-C14

Bores and Keyways for Flexible Couplings, Inch Series

This standard presents inch dimensions, tolerances, and sizes for straight bores, tapered bores, single keys and keyways for unmounted industrial flexible couplings. The keys are square or rectangular. This specification includes index tolerances for multiple keyways. Inspection methods for straight and tapered bores and keyways are included in the annexes. The annexes also include the recommended design practice for tapered shafts for use with flexible couplings.

ANSI/AGMA 2007-C00 (R2014)

Surface Temper Etch Inspection After Grinding [Same as New ISO 14104]

Explains the materials and procedures to determine and evaluate localized overheating on ground surfaces. Includes a system to describe and classify the indications produced during this inspection. However, does not provide specific acceptance or rejection criteria.  

AGMA 923-B05

Metallurgical Specifications for Steel Gearing

This document identifies metallurgical quality characteristics which are important to the performance of steel gearing. ÿThe AGMA gear rating standards identify performance levels of gearing by heat treatment method and grade number. ÿFor each heat treatment method and AGMA grade number, acceptance criteria are given for various metallurgical characteristics identified in this document.


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