... .high temperature ball bearings 2. Material : Si3N4 or ZrO2 3.Precisio:Abec-1, Abec-3, Abec-5, ... .high temperature ball bearings 2. Material : Si3N4 or ZrO2 3.Precisio:Abec-1, Abec-3, Abec-5, ... balls made by full ceramic material: Si3N4 or ZrO2, as a standard constructure,the cage made by PTFE ... PI, Phonemic Textiles Tube ,etc.Features: 1, Material: ZrO2, Si3N4, SiC and Al2O3, etc.1).High speed bearings: ...