A bearing is a component that allows a shaft inside a machine rotate smoothly.
A bearing is made of three parts:the inner ring, balls, and the outer ring.
The outer ring is fixed to the machine and the shaft is fitted into the inner ring. The bearing stabilizes the shaft and makes it rotate smoothly.
Bearings are used in various places.
Click the text in the illustration to see how bearings are used.
The role of a bearing is to make the friction closer to zero, which allows the rotation to run smoothly.Friction is the force that prevents things from moving.In order to make automotive tires rotate smoothly, the friction should be reduced as much as possible.
If there were no bearings in this world, shafts would not rotate smoothly and would have to rotate with a lot of friction, using a lot of energy to spin. It would cause us to burn more oil and coal which lead to global warming.A bearing is an eco-friendly component that can run machines with less energy.