To manufacture a set of high-precision bearings, one must start with the foundation of the bearing—the forging. This is the fundamental core factor that determines whether a set of bearings meets the standards.
The forging codes for Jiushang Bearings are divided into two categories: bearing steel and carbon structural steel.

A set of high-quality bearing forgings should possess the following properties:

1. Very high fatigue contact strength and excellent wear resistance;
2. Very high elastic limit and yield strength;
3. Very high and uniform hardness;
4. A certain degree of impact toughness;
5. Excellent dimensional stability;
6. Good corrosion mitigation performance;
7. Favorable machining processability.

In addition to the above properties, bearing forgings used in special working conditions should also have characteristics such as high temperature resistance, low temperature resistance, corrosion resistance, radiation protection, and magnetism resistance.

At present, the gap in material quality between domestic bearings and foreign bearings is becoming increasingly narrow. All forgings produced by Dongzhou Bearings adopt natural aging treatment to release internal stress, which plays a crucial role in improving the precision and service life of bearings.