description
Flexible Couplings - Mass Elastic Properties and Other Characteristics ( Metric Edition)
ANSI/AGMA 9104-A06 (reaffirmed December 19, 2017)
ANSI/AGMA 9104-A06 (reaffirmed December 19, 2017)

SCOPE
This standard presents information and calculation methods for the mass elastic properties and other characteristics of flexible couplings. This data is of importance to system designers for the selection of system components and natural frequency calculations. Calculation methods of the properties of the coupling flexible elements are not included in this standard. Due to the diversity of coupling types, this standard presents generally accepted practices rather than rigorous engineering analysis. Some characteristics are not covered in this standard, such as coupling balance which is covered in ANSI/AGMA 9000-C90, Flexible Couplings - Potential Unbalance Classification.

FOREWORD
[The foreword, footnotes and annexes, if any, in this document are provided for informational purposes only and are not to be construed as a part of AGMA Standard 9104-A06, Flexible Couplings - Mass Elastic Properties and Other Characteristics (Metric Edition.]

This standard was developed through intensive study of existing practices, standards, text books and literature. The intent of this standard is to offer to rotating equipment designers, builders and users, a standard for design practice and methods of calculation of certain physical and mass elastic properties of flexible couplings. In general, the information in this standard is a consolidation of the most common practices and calculations currently in use by flexible coupling manufacturers, rotating equipment designers and users.

This AGMA standard utilizes the physical dimensions and properties of the coupling or coupling components for the calculation methods. It does not cover coupling characteristics that are included in other AGMA flexible coupling standards, such as coupling balance, which is addressed in ANSI/AGMA 9000-C90, Flexible Couplings - Potential Unbalance Classification.

Work was started on ANSI/AGMA 9004-A99 in 1989 at the suggestion of the AGMA Flexible Couplings Committee to achieve uniformity in the methods of calculation in inch units of measure. ANSI/AGMA 9004-A99 was approved as a standard by the AGMA membership on March 4, 1999, and as an American National Standard on August 3, 1999.

The first draft of ANSI/AGMA 9104-A06, in SI units of measure, was made in May 2000. It was approved by the AGMA membership in July 2006. It was approved as an American National Standard on December 18, 2006.

Suggestions for improvement of this standard will be welcome. They should be sent to the American Gear Manufacturers Association, 500 Montgomery Street, Suite 350, Alexandria, Virginia  22314.

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