The working principle and structural composition of Dalian ball bearings

The working principle and structural composition of ball bearings

Dalian ball bearing is a common mechanical component used to support a rotating shaft while bearing radial and axial loads on the shaft. Understanding the working principle and structural composition of ball bearings is important for the correct selection, installation, and maintenance of ball bearings.

Working principle:

The working principle of ball bearings is based on rolling friction, which reduces frictional resistance by rolling elements (usually steel balls) between the inner and outer rings, allowing the bearings to withstand larger loads and achieve relative rotation. When an external load acts on the bearing, the steel ball rolls between the inner and outer rings, effectively sharing the radial and axial loads, reducing the friction loss of the bearing, and improving the operating efficiency and lifespan of the bearing.

Structural composition:

1. Inner and outer rings: Ball bearings are usually composed of inner rings, outer rings, and steel balls. The inner and outer rings are the main body of the bearing, which bears the load and supports the rotating shaft.

2. Steel ball: Steel ball is the rolling element of ball bearing, which reduces friction and bears load through rolling motion. The diameter and quantity of steel balls can affect the bearing capacity and stability.

3. Cage: Cage is a component used to fix steel balls, preventing them from colliding or falling off each other. Cages are usually made of metal or plastic materials.

4. Sealing ring: Some ball bearings are also equipped with sealing rings to prevent impurities such as dust and moisture from entering the interior of the bearing, protecting the bearing from pollution and corrosion.

5. Lubricating grease: In order to reduce friction and wear, the interior of ball bearings is usually filled with lubricating grease to ensure the normal operation and lifespan of the bearings.

In summary, Dalian ball bearings achieve the functions of bearing loads, reducing friction, and reducing energy consumption through the synergistic effect of components such as inner and outer rings, steel balls, retainers, sealing rings, and lubricating grease. Understanding the working principle and structural composition of ball bearings can help us better understand their functions and usage methods, making it easier to choose, install, and maintain ball bearings.