... aluminum (brake)-3-phase motor dc motor with gearbox :The output shaft diameter of gearbox 1#,2#,3# ... are 18,22,28 separately. The material of gearbox ... Finally, Gear is cut for the second. Motor shaft will be processed with gear hobbing. ... deft structure. Protection grade is IP20. dc motor with gearbox (ZV..S Vertical type with aluminum ( ...