The Boston Gear F721-20-B5-J gear reducer 20:1 ratio 1.4 input HP 1" shaft dia is a gearbox/mechanical drive component from Boston Gear. It transmits and modifies rotational speed and torque between a motor and driven load, or guides and supports linear motion within a drive system. Key specifications noted on this listing include 20:1 Ratio. It is commonly in OEM equipment and MRO replacement for mechanical drive systems.
