Ceramic ball bearings possess low density, high hardness and lowfriction coefficient especially for Si3N4 ceramic ball bearing withself-lubricating and good stiffness.

It is specifically made for rollers of high speed, precision andlong life mixed ceramic ball bearing. Generally inner and outerrings are adopted with bearing steel(GCr15) or stainlesssteel(AISI440C) and we may choose ZrO2, Si3N4 or SiC material.