... colouration-equipment in printing and dyeingindustry, those are all graphite bearings, it can avoid problem of pollution bylubricating oil. As ... medium , it’s widely used for various equipments , such as blue water , aviation , chemical industry , steel rolling ,etc.2. high hardness, ... high speed, high PL value.4. carbon and graphite bearings, pistions, piston rings and sealing rings are normally used ...