Choosing the most suitable coupling

There are many different kinds of couplings.
Today, I would like to explain the basic points on how to select the most suitable couplings for your needs.

In general, the word “coupling” means a component which connects two rotating shafts, including large “shaft couplings”
made of cast iron.
Today, I will explain about smaller miniature precision couplings which are mostly used for factory automation, technologies.