The requirements for precision bearing accessories are mainly reflected in the following aspects:

1. Fitting accuracy: Precision bearings require that the roundness of the shaft, the seat hole, and the verticality of the shoulder should be matched according to the accuracy requirements of the bearing. When installing the bearing, it is necessary to accurately calculate the interference of the rotating ring. The interference of the rotating ring should be a smaller value within the allowable range to ensure the impact of thermal expansion of the bearing at operating temperature and the impact of centrifugal force under high-speed operation. Will not cause sliding of bearing mating surfaces.

2. Material requirements: Precision bearings have high material requirements. For example, the inner and outer rings and steel balls usually use high-carbon chromium bearing steel. This steel has high hardness, high wear resistance and good fatigue resistance. The cage is usually made of lightweight, high-strength materials, such as aluminum alloy or high-strength plastic.

3. Fit clearance: For fixed ferrules, an appropriate clearance fit or interference fit should be selected based on the working load and bearing size. A too loose or too tight fit is not conducive to maintaining the original precise shape. If a small interference fit is required for the retaining ring, both matching parties need to have high shape accuracy and small roughness.

4. Operating conditions: If the bearing operates at high speed and the operating temperature is high, the fit of the rotating ferrule cannot be too loose to prevent eccentric oscillation. At the same time, there should be no gap in the fit of the fixed ferrule to prevent the ferrule from oscillating. Deforms under load and excites vibrations.

5. Quality requirements: Precision bearings also have very high quality requirements, including inspection of raw materials, monitoring of processing processes, and testing of finished products, to ensure the performance and quality of the bearings.

The requirements for accessories for precision bearings involve many aspects such as fitting accuracy, material, fitting clearance, operating conditions and quality to ensure the high performance and long life of the bearings.