... and corrode resisting.3,Long using time.4,Reduce the cost of machine, reducing noises and negligible stick-slip.5,It ... is good environment because there are without lead.CHARACTERISTIC OF SELF LUBRICANTION BUSHMax carrying capacity 250N/mm2Highest using temperature ... the corrosion medium. At presednt, have applied widely all sorts of mechanical arthrodia, for example, printing press, spinning machine, ...