founnd this too. Looks easy and promising.
Applications
Roll-Ring chain tensioners can be applied
in a wide variety of fields of mechanical
engineering. Roll-Rings have been reliably
operating in printing machines,
confectionary production lines, luggage
conveyor drives/transportation systems
at airports, cleaning and filling systems in
breweries, roller conveyors in aluminium
pressing plants, in chain drives on
vibratory plates in automatic sand
blasting machines, and in agricultural
machines with heavy duty chain drives.
*Roll-Rings have even been installed
successfully on Quad bikes/buggies.