Boston Gear 318-20-G1 Gear Reducer

Boston Gear 318-20-G1 Gear Reducer is a worm-gear speed reducer from Boston Gear, an Altra Motion brand, listed as model 318-20-G1 (also shown as 31820G1) with internal code 58569-71. This inline reducer delivers a 20:1 reduction ratio, designed to slow motor output while increasing torque for compact, durable power transmission in industrial machinery. As part of the Boston Gear worm-gear reducer family, the 318-20-G1 reflects the brand’s tradition of robust steel gears and precise worm gear meshes that provide reliable torque transfer under typical loads. Applications typically include scenarios where a higher-speed motor must drive conveyors, packaging lines, or automation equipment at reduced speeds; confirm the exact mounting and shaft configuration with a Boston Gear distributor or the official catalog for the specific 318-20-G1 assembly.