1) High quality aluminum housing from 025-090 2) High accuracy worm gear and worm shaft 3) stable transmission 4)NSK bearings RV series worm gear speed reducers:Model size:025,030,040,050,063,075,090,110,130,150Speed ratio:5,7.5,10,15,20,25,30,40,50,60,80,100High quality synthetic lubricant oilMain adavantages:1.stable transmission,low weight,long life service,low noise2.low temperature rise,high ...