ANSI/AGMA 9009-D02-2002 pdf free.Flexible Couplings – Nomenclature for Flexible Couplings.
A mechanical shaft connector designed to transmit torque without slip and will transmit axial/thrust force. This coupling will not accommodate misalignment. It can be flange type, sleeve type, solid or split.
4.2 Flexible coupling
A mechanical shaft connector designed to transmit torque without slip, and to accommodate misalignment and sometimes axial travel between driving and driven machine members Some flexible couplings are designed to also transmit axial/thrust force.
4.2.1 Flexible element
The part of a coupling which provides flexibility. Various flexible element designs utilize a number of operating principles to provide flexibility. The design of this element determines the character of the coupling in terms of reaction forces, dynamics and reliability. For this standard, common flexible element types have been grouped into three major categories which are defined below. Note that the character of a particular flexible element type may cross or fall outside the definitions below. Also note the properties of flexible elements themselves are not covered in this standard. The reader is directed to the appropriate coupling manufacturers for information on the properties of a particular type of flexible element.
4.2.1.1 Mechanical element
A form of flexible element which accommodates misalignment by sliding or rolling on mating surfaces. These parts normally require lubrication. These elements do not have a free state position. They can be at rest at any combination of axial and angular positions within their flexible capability. Mechanical elements resist change in axial and angular position mainly as a function of shaft torque and coefficient of friction between the mating surfaces. Examples of mechanical elements are gear, grid and chain.
4.21.2 Metallic element
A form of flexible element which accommodates misalignment by material deflection of a metal member. These elements are very much like springs in that they have a free form shape and will resist a change in shape with a reaction force. Examples of metallic elements are contoured diaphragm, convoluted diaphragm, disc, springs and bellows.
4.2.1.3 Elastomeric flexible element
These flexible elements are characterized by the use of an elastomer. There are many types of elastomeric elements which accommodate misalignment through varying degrees of material deflection and sliding motion. Some single flexible element designs may act as a double engagement coupling. Reaction forces of elastomeric flexible elements are determined by element configuration, material stiffness, coefficient of friction and torque. They can be categorized into two general types, compression and shear, based upon the way torque is transmitted through the flexible element. Because of the great variety of designs. some actually fit both categories in varying degrees.
4.2.1.4 Others
There are other types of flexible elements that accommodate misalignment through various other methods and/or combinations of the previously mentioned types, such as slider block, pin and bushing, and composites.ANSI/AGMA 9009 pdf download.
ANSI/AGMA 9009-D02-2002 pdf free
Note:
Can you help me share this website on your Facebook or others? Many thanks!