Hybrid ceramic bearings use steel rings and ceramic (usually silicon nitride) balls. Hybrid ceramic bearings can achieve higher speeds, greater accuracies, and have a longer service life than steel bearings which is why hybrid bearings are finding increased usage in a wide variety of engineered applications today.
The following are the basic properties of Hybrid bearings:
Good thermal insulation
Low thermal conductivity
Resistance to corrosion and acids except HF acid
Medium friction (HV>1400): Rotation speed increased from 30 to 170% compared to regular steel bearings
Avoid water vapor as it breaks Yttria
Life time is 50% more than regular steel bearings.