What are the components of the first generation of automotive wheel hub bearings

The composition of the first generation of automotive wheel hub bearings mainly includes the following parts:

1. Inner and outer circles

Inner ring: located inside the bearing, tightly fitting with the shaft and rotating together with the shaft.

Outer ring: located outside the bearing, usually installed on the hub of the wheel to provide support and positioning.

The inner and outer rings are the basic structure of bearings, and they rotate relative to each other through rolling elements.

2. Rolling elements

Rolling elements are key components in bearings, such as steel balls or rollers. These components are located between the inner and outer rings, reducing friction and wear through rolling, thereby achieving smooth rotation of the wheels.

3. Retaining frame

Retainers are used to maintain a uniform distribution of rolling elements, preventing them from colliding with each other or causing uneven wear during use. The design of the cage is crucial for the performance and lifespan of the bearing.

4. Lubricating grease

Although grease is not a component of bearings, in practical applications, the first generation of automotive wheel hub bearings usually require the use of grease to reduce friction and wear, and improve the service life of bearings.

Overall characteristics

The first generation of automotive wheel hub bearings mainly consisted of double row angular contact bearings, which provided the bearings with high load-bearing capacity and stability.

During the installation process, the first generation wheel hub bearings require extensive adjustments to ensure the accuracy of the fit and reasonable clearance between the bearings and the shaft and wheel hub.

In summary, the first generation of automotive wheel hub bearings consisted of inner and outer rings, rolling elements, retainers, and lubricating grease. These components worked together to achieve smooth rotation and support of the wheels.