What is the main function of bearings?

The main functions of bearings
1. Reducing friction between the rotating "shaft" and the rotating support part will inevitably cause friction. Bearings are used between the rotating "shaft" and the rotating support part.
Bearings can reduce friction, make rotation smoother, and reduce energy consumption. This is the function of bearings.
2. The shaft that protects the rotating support part and the rotating support part will bear a large force. Bearings can prevent damage to the rotating support part due to this force, keeping the rotating shaft in the correct position. It is precisely because of these functions of bearings that we can repeatedly use the machine for a long time.
The purpose of bearings in automobiles: rear wheels, transmissions, and electrical components. Electrical: General electric motors, household appliances. Instruments, internal combustion engine construction machinery, railway vehicles, loading and unloading machinery, and various industrial machinery. Machine tool spindle, agricultural machinery, high-frequency motor, gas turbine, centrifugal separator, small car front wheel, differential small gear shaft.