- A coupling is a mechanism that connects two shafts at their ends so that power can be transmitted. Couplings are used to connect two pieces of rotating equipment while allowing for some degree of misalignment, end movement, or both. A coupling can also be a mechanical mechanism that connects the ends of nearby pieces or objects in a broader sense.
- Couplings generally do not allow shafts to be disconnected during operation, however torque-limiting couplings can slip or disconnect if a torque limit is exceeded. Couplings can be chosen, installed, and maintained in such a way that maintenance time and expense are decreased.
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