Question

What is a bearing and what does it do

Answer 1

bearing is a device which is used to reduce rolling resistances in various machines.

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Answer 2

A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts.
The wheels on your car are like big bearings. ... Bearings reduce friction by providing smooth metal balls or rollers, and a smooth inner and ... Casinos Don't Expect You To Do This.

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