These silicon nitride bearings are available without a cage (full complement) or with cages made from PEEK. We can also offer PTFE or 316 stainless steel cages. Full ceramic bearings are non-magnetic, non-conductive and extremely corrosion resistant although not suitable for shock/impact loads.
The full complement types can be used up to 800°C while PEEK cages are only rated to 250°C. PTFE and 316 stainless steel cages can handle cryogenic temperatures.