By Jon R. Mancuso
"Second variation offers new fabric on coupling scores, common function couplings as opposed to distinctive function couplings, retrofitting of lubricated couplings to nonlubricated couplings, torsional damping couplings, torquemeter couplings, and more."
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Extra resources for Couplings And Joints Design Selection And Application
Miscellaneous coupling types obtain their flexibility from a combination of the mechanisms just described or through a unique mechanism. B. The Disciplines for Flexible Coupling Applications There are three disciplines for thc application of flexible couplings: 1 . The miniature discipline, which covers couplings used for office machines, servomechanisms, instrumentation, light machinery, and so on: a. 11) b. 1 1 Miniature nonlubricated gear coupling. 12 Miniature urethane ribbon elastomeric coupling.
Also, because they are torsionally soft, they are sometimes used to tune a system out of a torsional critical mode. 7. 3 1 ) are used primarily to accommodate misalignment and transmit power. Relative movement is accommodated by compression of steel bonded bushings. Small and medium-sized equipment employs these couplings. They are used to absorb energy and dampen loads, particularly when the equipment is engine-driven. 29 Block coupling. (Courtesy of Kop-Flex, Inc. 30 Jaw coupling. ) Overview of Couplings and Joints 49 Pin-and-bushing coupling.
The rubber blocks are installed in cavities formed by internal sleeve blades, an external hub blade, and two end plates. This type is unique among couplings due to its fail-safe feature. If the elastomeric element fails, the coupling may run for some time on the metal blades. These couplings can provide up to 1/4 degree of misalignment and parallel offset capabilities of 1/64- 1/32 in. 25 45 Urethane tire coupling. ) will incorporate these couplings because if properly aligned they require no maintenance (except for replacement of blocks every 3-5 years).