... Different ratios, namely 9.8:1,8:1 Gearbox is mainly used for floor machine, low speed polishing machine, etc. ... It can be made for different ratios, namely 9.8:1.Inside the gearbox, it is designed with planetary ... performance steel gears are used.The shells of the gearbox are the alloy iron, and the iron is with ... plastic, also, there's 2-gear . superior 154 Gearbox for low speed polishing machine