... rubber machine--model :XK-250 2.chilled cast iron roll,ductile cast iron sidewall 3.bearing bushing tyre,planet speed reduce 1.The mill ... consists mainly of rolls ,frame ,bearing,roll nip adjusting screws,heating and cooling ... lenght of rolls(mm)280620750900100012001530Working linear speed of front roll(m/min)11.2414.415.116.2518.6524.529. ...