Deep groove ball bearing is a commonly used type of rolling bearing, mainly used for low-power electric motors, automotive and tractor gearboxes, machine tool gearboxes, etc. Its main advantages are as follows:

1. High load-bearing capacity: Deep groove ball bearings can bear radial and axial loads, and can withstand higher axial loads. This load-bearing capacity enables deep groove ball bearings to perform excellently in high load and high-speed working environments.

2. Low friction: The spherical structure and special lubrication method of deep groove ball bearings reduce their friction and enable them to achieve higher rotational speeds. This feature is very suitable for devices that require high-speed operation, such as rotary fans, hard drives, etc.

3. Simple structure and easy mass production: Deep groove ball bearings have a relatively simple structure, are easy to manufacture and maintain, have low manufacturing costs for mass consumption, and can achieve high manufacturing accuracy during the manufacturing process.

4. Strong adaptability: Deep groove ball bearings have the properties of angular contact ball bearings and can withstand axial loads that alternate in two directions. This makes it highly adaptable in applications and can meet various requirements under different working conditions.

5. Long service life: The material and manufacturing process of deep groove ball bearings make them have a longer service life, and ball bearings with dust covers or sealing rings can provide better sealing effect, extending their service life.

In summary, deep groove ball bearings have advantages in load-bearing capacity, friction, simple structure, adaptability, and service life, making them widely used in various mechanical equipment and the most commonly used type of rolling bearings.