... : Spur, helical. ect Approved by I Girth gears are widely used in steel, sugar, paper, mining, cement, chemical, clean-power and ... customers. In recent days, we successfully made the girth gear used in 2mt oxidized pellet rotary kiln, which is the largest ... and Modul, which makes us possess the capability to machine super works. large modulus gear ring used for ball mill or rotary kiln