What’s the working principle of cycling ceramic bearings?

For most riders, upgrading the car is a never-ending task. Watching the car become stronger and stronger in their own hands is extremely satisfying. About the cycling ceramic bearings, both the front and rear wheel bearings rotate on the outer ring, which is equivalent to a double row angular contact ball bearing.
The rear wheel bearing mainly bears the rotating load; the front wheel bearing mainly bears the fixed load.

Although the design and technology of mountain bikes are constantly innovating, mountain bikes cannot currently be separated from traditional bearing components. Bearings are used in hubs, headsets, bottom brackets, pedals, and rear derailleur pulleys, and they are usually made of stainless steel.

However, in recent years, cycling ceramic bearings have been hyped by some businesses. Many brands claim that their cycling ceramic bearings can provide drivers with top performance, but are ceramic bearings really worth paying for?
Although in many cases a well-manufactured high-quality cycling ceramic bearings can last ten times as long as an ordinary stainless steel bearing, and a high-quality ceramic bearing can reduce rotational resistance under load, saving output for the driver.

Cycling ceramic bearings have less running friction and offer significant advantages in industrial applications operating at 20,000 rpm. But when the ceramic bearing is only running at 300 rpm (for cycling, the maximum "continuous speed" of the bottom bracket bearing may only be 130 rpm, and the maximum speed of the hub bearing may be 500 - 600 rpm ), a small increase in efficiency will make a negligible change in your power output.

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