... and specially condition. The rings and balls made by full ceramic material: Si3N4 or ZrO2, as a standard constructure,the cage made ... , PEEK, PI, Phonemic Textiles Tube ,etc.6202684CE608CE Features: 1, Material: ZrO2, Si3N4, SiC and Al2O3, etc.1).High speed bearings ... steel or stainless steel, ball in ceramic of Si3N4 or ZrO2 material)Part of deep groove ceramic bearing items: Payment Details:· Payment ...