... certificate & ISO certificate 4.Advanced technology. Structure:This machine consists of Base,Rack,Gland,Rollers,Bearing,Transmission device, ... :Bearing or Copper bush or Nylon bush;5'Machine will be tripped off if overloaded to protect ... 1.251:1.271:1.271:1.2Max. roll distance(mm)4.58810101520Feeding capacity per time(kg)1 ... bushing thin oil lubrication/Bearings XK-360 Two Roll Rubber Open Mixing Mill