Can bike ceramic bearings replace steel bearings?

Seeing that many friends who love cycling are discussing about bike ceramic bearings, here I will talk to you about some of the actual conditions I learned and some knowledge about bike ceramic bearings.
Bike ceramic bearings are generally divided into two types, one is full ceramic bearings, and the other is partial ceramic bearings. It is well understood that the so-called all-ceramic bearings are the inner ring, the outer ring, and the balls are bearings using ceramic materials. For some ceramic bearings, we often see that balls usually use ceramics, while the inner and outer rings still use steel as the material.

Earlier, bike ceramic bearings used composite alumina ceramics. The advantage of such ceramics is that they are very hard and very hard. In addition, there are composite silicon oxide, but the hardness of bike ceramic bearings using this material is slightly lower than that of aluminum oxide. The common feature of these materials is that they are relatively brittle. At present, the main bike ceramic bearings material uses incompletely recrystallized zirconia, and its hardness is very hard. Although this material is slightly lower in hardness than alumina, its impact strength is very, very high.

 At present, the impact resistance of the common ceramic bearings is no longer a problem. The common ceramic bearings can meet this standard. The main problem now is that there is no suitable material for the retainer. The general situation is that the scrapping of ceramic bearings is generally the damage of the retainer. The materials of the current retainers are also various, from high-density nylon materials to metal materials. But no matter what kind of material it is now, it can't be worn out of ceramic materials.

 Also, one problem with ceramic bearings is price. Because of the limitations of the manufacturing process, its price cannot be like a rigid bearing, so this bearing is not used in many places or many industries, so it also leads to its small output and increases the production cost in disguise. , Resulting in high prices for ceramic bearings.

 Now the main production places of bike ceramic bearings are Sweden and Japan. China is also producing, and the models are few in accuracy and not very high. However, it is more than a bicycle. Even in foreign countries and other places, there are few models and the supply period is very long. In addition, there are many ceramic fine grinding balls produced in China, all of which are metric.
 The use of bike ceramic bearings for bicycles is of course very good. Ceramic bearings also have many advantages, high temperature resistance, wear resistance, corrosion resistance, suitable for higher speeds, very low coefficient of expansion, and very low thermal conductivity. If the price can be controlled, Then it is absolutely no problem to replace steel bearings on bicycles. Therefore, it may not be now, but in the future there may be a day when ceramic bearings will replace steel bearings, so we should control the development and application of bike ceramic bearings on bicycles at the source.

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