1.bearing bushing/engine bearing bushing 2.High Density,Zero Defects,Easy ... to vibration damping30-70% material saving compare with solid bar for hollow partsMachined parts in these and other ... column ,clamp ring Oil and Gasguide sleeves ,sealing ring, sliding sleeve Industrial machineries axis sleeve, gear, kawa, wear-resistant ... , gear Mine mechinanismwear resist sleeve, engine cylinder bearing bushing