Question

Definition of ball bearing in easy language. Plz tell me fast

Answer 1

HELLO !! ☺☺

HERE IS YOUR ANSWER,
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Ball bearing is a type of rolling element bearing that uses ball to maintain separation between two moving parts. The purpose of ball bearing is to reduce rotational friction between the two rolling parts.
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Answer 2

the tiny bags here are cashed ball bearings.
the definition is: a bearing in which the parts are separated by a ring of small freely rotating metal balls which reduce friction.

these are tiny metal balls to reduce friction between two objects