... can process the heat treatment of spare parts within 100 tons as a whole and the normalizing ... , hardening and tempering of half girth gear within 10m diameter.With regards of the surface hardening ... shaft( no longer than 5m), gear(diameter within 5m), slewing bearing, bearing collar and so ... of bearing roller way and gear ring (diameter within 6500mm) gear: the hardening and tempering, surface ...