People also call bicycle bearings "bicycles". In fact, this type of vehicle does not use relevant bearings very often. At present, most bicycles use deep groove ball bowl bearings the most. I have also seen netizens say that thrust bearings are actually angular contact bearings. At present, bicycles are not widely used, and the main reason is the price.

At present, there are the following types of bearings used for bicycles:

1: High-end: Ceramic ball hybrid bearings customized for mountain bike bowl bearings, that is, the steel balls are ceramic ball hybrid bearings (Si3N4), but the inner and outer rings are stainless steel, domestic model 9Cr18, international model SUS440C. Advantages: flexible rotation, high speed, and durability; Disadvantages: The bearing groove is easy to scratch and the price is expensive.

2: Mid-to-high-end: Stainless steel bearings. Stainless steel flange bearings. The difference between these bearings and the above is that the steel balls inside are stainless steel, and the material is the same as the ring material. Advantages: durable, flexible, much cheaper than ceramic ball bearings; Disadvantages: Haven't found it yet, haha.

3: Low-end: bearing steel bearing, material GCr international model 52100. Advantages: cheap; Disadvantages: not durable.

4: Light load: Global bearings, that is, custom bearings for road bike headsets, have no bearing retainers inside, and are all steel balls. Advantages: can withstand light loads; Disadvantages: slow speed, difficult to withstand high speeds.

In fact, a really good bicycle does not need bearings (naturally, this is not certain). After all, when starting or accelerating rapidly, once the bearing is subjected to a large force, the bearing will have a certain plastic deformation, which reflects the driver's feeling of "clicking" for a while, and there will be a feeling of being not smooth. But which specific application, my client told me before, I forgot. I hope that which car owner can understand it together.

But now the bearing factories are all very good imported oils, the price is 6,700 yuan per barrel, such as Japan's cooperative oil (Kyodo Yushi). Mobil (this price is relatively cheap), expensive ones will use some DuPont oil or Krupp oil, the price is generally around 15,000. The price of bowl set bearing manufacturers is also quite expensive. In fact, it is difficult for ordinary people like us to classify them according to the advantages and disadvantages of oil. Everyone has a misunderstanding. Generally speaking, merchants say that the high precision of bearings is just what we call basic precision, which is the diameter, diameter, and total width of the bearing. And the control of this size is generally done very well, because domestic factories are 99% detected, in the final analysis, they are picked out.