JDB-4 is made of casting iron HT250 and embedded with solid lubricant. It is a typical cost saving product. It can be substitute of JDB-2 if requirement in mechanical performance is not High including guide post of mould, mold-frame of plastic injection machine etc.

Base material0：HT250

Dynanic load：60N/mm2    

Base hardness：HB180~230

Friction coef.：<0.18

Temperature Max.：400℃

Speed limit：0.5m/s