Based on the generating process, with carrying out index and differential compensation motions by electronic gear box (EGB), the model Y3180CNC6/Y31125CNC6 heary-duty gear hobbing machine is designed to cut cylindrical spur & helical gears, crowning or slightly tapered gears, worm wheels, splines, and etc. This machine is used in the industries, such as mine machinery, marine, crane, metallurgy, lift, petroleum machinery, electricity generation equipment, engineering machinery, and etc.