I think that's ceramic coated bearings isn't it?

The record-breaking machine used silica tyres filled with helium and ceramic bearings designed to revolve with minimum friction.

Silicon nitride bearings are both full ceramic bearings and ceramic hybrid bearings with balls in ceramics and races in steel.

Growth is estimated at 40% per year, but could be even higher if ceramic bearings are selected for consumer applications such as in-line skates and computer disk drives.

Two drawbacks to ceramic bearings are a significantly higher cost and susceptibility to damage under shock loads.

This reduces centrifugal loading and skidding, so hybrid ceramic bearings can operate 20% to 40% faster than conventional bearings.

While ceramic hybrid bearings use ceramic balls in place of steel ones, they are constructed with steel inner and outer rings; hence the hybrid designation.

All ZEDTECH wheels now include aerodynamic dimpled hubs with ceramic bearings.

Aluminum brakes, carbon-fiber wheels, titanium hubs, and ceramic bearings all contribute to the vehicle's light weight of a mere 290 kg.

Spiral was to have been protected by what Soviet engineers termed "scale-plate armour": individual steel plates hung from articulated ceramic bearings to allow for thermal expansion during reentry.