The bearing clearance is a measurement given to the small gap between the inner race outer race and balls.
Ceramic bearings better than steel.
Ceramic bearings exist to help manage heat in high rpm applications.
Campagnolo chooses to put ceramic bearings in all of its wheelsets from mid range upwards.
They don t expand or deform when they contact each other hertzian stress as much as steel bearings when they get really hot.
On ceramic bearings this is usually a c3 clearance whilst on steel it s usually cn.
Ceramics are inert whereas metals are reactive making ceramics resistant to corrosive materials such as seawater and many chemicals including acids and alkalis.
It takes weeks for a kogel ball to sit in a tumbler and be perfectly polished.
It is required to prevent bearing seizure when it warms up and expands.
Ceramic is the perfect material for any application seeking to achieve higher rpm s reduce overall weight or for extremely harsh environments where high temperatures and corrosive substances are present.
While a formula 1 engine revving to 15 000 rpm can create a lot of heat that can deform and swell steel bearings.
As ceramic bearings do not.
They are more corrosion resistant harder and last longer in everyday use.
This is mostly due to the additional time spent to perfect a quality ceramic ball.
The ceramic balls when manufactured by a top quality bearing manufacturer are rounder lighter and smoother than steel balls.
Ceramic bearings vs steel bearings ceramic materials offer superior corrosion and heat resistance higher dimensional stability and lower density which facilitates high speed.
In our higher end cult.
Another common difference in bearing construction is the cage type.
This reduces friction by up to 40 as well as energy loss allowing your equipment to run more efficiently with ceramic ball bearings.
The first thing that strikes the eye when looking at bicycle bearings is the difference in price between steel bearings and hybrid ceramic bearings.