Roller adopts high-manganese steel materials, the hardness is up to HRC50-60, can reach the surface hardness of gear which is after heat treatment, cut from the overloading of insurance sales, roller seal, a special convex-processing, so that the whole roller width on the play Broken, more effectively enhance the service life, high manganese steel roller to roll machine is common in the normal work of cast steel rolls for the life of three to five times. Especially because of wear-resistance, it is one of the recommended products!