1. Machine frame, gland and base are all welded through steel plates, after annealing, completely processed by precise machine tool. The whole machine frame, gland and base are all of strong rigidity, won't deform and the surface is smooth and anti-wear.
2. The 2 ends of the rolls adopt double roller rolling aligning bearings. Bearings adopt automatic thin oil lubrication system. Roll Bearings adopt automatic thin oil lubrication style.
3. Rollers cooling water adopt copper rotary joints. Rollers are made of chilled cast iron, front and rear rollers are hollow type, so as to achieve better temperature control effect, the working surface hardness is 68 ~ 72HSD.