Coupling Basics - RoCom Couplings Corp

How Flexible shaft couplings work

The simple answer is…there is no simple answer. Designs for flexible shaft couplings are numerous, with some methodologies dating back to the Industrial Revolution.  Some of the more common flexible shaft couplings in production today include; bellows coupling, oldham coupling, jaw or spider coupling, and the beam type coupling manufactured by Rocom. There are precious few new or unique designs in the world of flexible shaft couplings.  Most of the considerable improvements made recently are due to new methods of manufacturing and modern materials being applied to tried and true designs, some of which are over a century old.

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In any given motion control system the forces that act upon the flexible shaft couplings are the same regardless of the design or type, but the introduction of two different flexible shaft couplings with seemingly identical performance criteria can make a radical difference in the overall system performance. Fortunately, the 80/20 principal applies here as follows: if you address the most common issues before your system design is done (the 20%), you will avoid most of the potential problems (the 80%) on the back end of your design.

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