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The summary of small bearings and introduced

by：Waxing 2020-11-17

After the invention of the wheel, it was found that on the same surface using scroll to moving objects is much more Billy with sliding and effort. Even if later found lubrication can reduce sliding objects needed to work, but the use of rolling ー consumed power still less. Archaeological finds, for example, in ancient Egypt around 240 BC in the skateboard when transporting huge stone and stone carving, then use the lubricant to lighten the burden of human like water; Surface by around 100 BC, the assyrians have mat under the skateboard ourselves, with less manpower and achieve the same results. So the use of the rolling bearing applied in the complex mechanical and institutions and the development is the inevitable result.

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