How about bearing
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How about bearing

Views:2823     Author:Site Editor     Publish Time: 2017-07-11      Origin:Site

How about bearing?

A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. 


The first practical caged-roller bearing was invented in the mid-1740s by horologist John Harrison for his H3 marine timekeeper


Bearings played a pivotal role in the nascent Industrial Revolution, allowing the new industrial machinery to operate efficiently. For example, they saw use for holding wheel and axle to greatly reduce friction over that of dragging an object by making the friction act over a shorter distance as the wheel turned.


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