ANSI/AGMA 9004- B08 pdf download

07-24-2021 comment

ANSI/AGMA 9004– B08 pdf download.Flexible Couplings – Mass Elastic Properties and Other Characteristics.
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 pin-bushing.
2.1.4 Elastomeric 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. Reaction forces of these types of 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.
2.2 Symbols
The symbols used in this standard are, wherever possible, consistent with other approved AGMA documents. It is known, because of certain limitations, that some symbols, their titles and their definitions, as used in this document, are different than in similar literature.
Table 1 is a list of the symbols used in this standard,along with the associated terms. The “Where first used” column gives the clause or equation number where the particular symbol is first used.
tained in this document may differ from those used in other documents and AGMA standards. Users of this standard should assure themselves that they are using the symbols, terminology and definitions in the manner indicated herein. The unit “Ib” is a unit of force, “bf”. See annex J.
The coupling manufacturer is responsible for providing accurate coupling data and information for the following calculation methods. The coupling mass elastic properties will affect the system performance. The customer is responsible for system analysis and actual response.
4 Coupling characteristics
4.1 Weight, W
The weight of a flexible coupling or component is used for the calculation of shaft stress, deflection and bearing loading. See annex A for the weight calculation of a flanged coupling hub. See annex D for the equations for the weight calculation for some common shapes. For a discussion on units of mass and weight, see annex J.ANSI/AGMA 9004 pdf download.

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