The Largest Selection of Gearing Equipment and Expertise in the Southeast Griffin Gear specializes in the manufacture of qual ... ity replacement gearing and gearbox rebuilds for any conceivable industrial application. With the capability to machine and cut gears ranging in size from ½ inch to 20 feet in diameter, we have the largest selection of equipment, tooling (including metric) and experience in the Southeast required for highly customized gearing jobs. read more