154 rpm professional planetary gearbox used for floor machine 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 gears.It works well because the high performance steel gears are used.The shells of the gearbox are the alloy iron, and the ...