AGMA has released the ANSI/AGMA 9009-E20, Flexible Couplings - Nomenclature for Flexible Couplings publication. 

This standard presents the nomenclature common to flexible couplings as used in mechanical power transmission drives. It does not address nomenclature for flexible shafts, quill shafts, universal joints or devices that exhibit slip such as clutches, fluid couplings, magnetic couplings or torque converters.  The standard was prepared to reduce the language barriers that arise between designers, manufacturers and users when attempting to designate or describe various types of flexible couplings and their elements.

This standard provides nomenclature common to flexible couplings and their application as used in mechanical power transmission drives. The following coupling types are not included in this standard: flexible shaft; quill shaft; universal joint; devices that exhibit slip such as clutches, fluid couplings, magnetic couplings and torque converters.

The publication is 26 pages, $40 for AGMA members, $80 for nonmembers. Visit the website below for additional details.