This is mostly due to the additional time spent to perfect a quality ceramic ball.
Ceramic bearings vs steel motorcycle.
Remember the drill alone without spinning the tire took 1 38 amps.
The first thing that strikes the eye when looking at bicycle bearings is the difference in price between steel bearings and hybrid ceramic bearings.
Next was the amperage that the drill needed to spin the wheel.
Ceramic bearings vs steel bearings ceramic materials offer superior corrosion and heat resistance higher dimensional stability and lower density which facilitates high speed.
The hybrid ceramic bearings had a long free spin time.
A ceramic bearing is also harder than steel bearings up to 30 which improves durability and they also don t rust so less maintenance should be required.
Cost of purchase for ceramic and steel bearings.
Sorry for strangling the hype.
A top class set of steel bearings as compared to a much promoted ceramic bearing is just as high performing.
Worldwide ceramic bearings have 40 less friction than steel and up to 60 less rotating weight.
Initially the enduro bearing has lower friction at around 600km of use the ceramic bearing has worn a track into the comparatively soft steel races and the bearing friction starts to increase dramatically.
Most sealed ceramic bearings are actually hybrid ceramic bearings which combine a steel race with ceramic ball bearings.
This discourse holds true not only for the bearings of skateboards and longboards but also for motorcycle and bicycle bearings.
The graph below shows a comparison between two steel bearings skf and ntn and a ceramic bearing enduro.
Ceramic bearings in my opinion are just not worth it.