... ,Length:8000mm Supply condition: Rough or final machined, normalzied Roller is our main product. Our producing capacity is about 3000tons ... extensively used for wind power generator, high-speed gear case ,low-speed gear case,metallurgy, rolling mill,oil extraction,mining,chemical ... for different types of gears, ring gears, gear splined shaft, shaft,gear shaft,and stepped shaft which are made of ...