Boston Gear F612C-12.5-B5 Gear Reducer

Boston Gear F612C-12.5-B5 is a 612C-series helical speed reducer in Boston Gear’s 600 Series, designed for motor flange mounting in the B5 pattern and offering a 12.5:1 reduction ratio. This flanged gearmotor option is listed alongside the F612CF-12.5-B5 variant, confirming a family with related flange configurations for the same gearing step. The 612C family is described in the manufacturer’s catalogs as a helical speed reducer used in industrial drive systems where torque multiplication occurs at moderate speeds, commonly integrated with standard motor frames that match the B5 mounting pattern. By selecting the F612C-12.5-B5, engineers specify a fixed reduction stage intended to work with compatible Boston Gear accessories and mounting hardware; the companion CF variant (F612CF-12.5-B5) illustrates the availability of alternative flange arrangements within the same model line. For exact mounting, shaft dimensions, center distance, and performance curves, consult the official Boston Gear literature for 600 Series speed reducers and the specific product pages for F612C-12.5-B5 and F612CF-12.5-B5.