1.Efficiency:96%. 2.Stable transmission. 3.High reliability. F17-F187 series helical gearbox high quality gearbox,helical gearbox,speed reducerCharacteristics1:Compact design, small volume, nice appearence and strong capacity of being overloaded.2:Pecise division and wide selection range for transmission ratio.3:The efficiency is up to as high as 96% with low energy consumption, excellent ...