... speed regulating for electric engine gearbox,precise exact to 0.5-1 round2) Large speed-changing range,1:1.4 to ... size8) Based on the rated motor power,assorted as UDL0.18,UDL0.37,UDL0.55,UDL0.75,aluminium alloy body; UD1 ... .1,UD1.5,UD2.2,UD3.0,UD4.0,UD5.5,UD7.5,cast iron body9) Mounted way,vertical ... the needed ratio change 10) Rated motor power,0.18---7.5kw Basic information,