Bearing analysis on skates

Source: Bearing network time: 2013-06-09

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The bearing can be decomposed into inner ring, outer ring, holding frame, steel ball, dustproof piece, etc. The quality of the bearing can also be used in these aspects; (severely speaking; the bearing should be applicable; can not be said alone Good or bad. The inner and outer rings are usually made of carbon steel or bearing steel; the plastic or iron is adhered to; the steel ball is divided into carbon steel, bearing steel and ceramic ball; the dustproof piece has white iron or rubber. The bearing is also An important concept is the "gap" between the DD steel ball and the channel. Here are some of the above to explain what kind of bearing is best for use on skates.
1. From the inside and the outside circle; the use of bearing steel is better than that of carbon steel; because one is carbon steel, the machining accuracy is not as good as that of bearing steel; the other is that carbon steel is more brittle than bearing steel; the skate bearing is affected by The force is radial; there is usually a radial force of 100-150 kg during the beating process; it is damaged by simple cracking of carbon steel.
2, from the perspective of steel balls; bearing steel is better than carbon steel; ceramic balls are better than bearing steel. This is based on the fact that carbon steel is brittle; other bearings are in the process of force transformation; the channel will have high heat The appearance of steel will be very strong; if it is made of ceramic balls, it can reduce the heat by the maximum limit. Other ceramic ball bearings do not need to be smooth and smooth; the appearance is extremely smooth; it is most beneficial for rapid development.
3. From the standpoint of persistence; the smoothness of plastic is better than that of iron; but the firmness of iron is better than that of plastic; but for skate bearings; plastic is usually better than iron; The steel ball of the roller skate bearing is also very good.
4. From the perspective of the dust-proof piece; the dust-proof piece of the tin sheet is divided into a live cover and a dead cover; the live cover can be personally protected by the user; the dead cover cannot be protected; the grease is replaced if it is gone.
5, in the end, the game; the game of skates bearing is too big; the smoothness of the bearing is poor; too small; the torque should also be increased; so this play should be adequate.
In summary, there is a bearing that is most suitable for roller skate bearings: the inner and outer rings are bearing steels; the steel balls are ceramic balls; the plastics are used to hold the frame; the dead cover is used for the dust-proof sheets; and there are suitable bearings for the clearance. But this Kinds of bearings are very expensive; usually 18DD25 yuan (ceramic balls are divided into white pottery and black pottery, white pottery is relatively cheap). The bearings used in 150DD200 multi-component skates on the market are usually between 0.55 and 1.5 yuan.

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