Bearing ring materials and components determine the performance and performance of the bearing to a large extent. Mingyuan has strictly checked the selection of ring materials and component suppliers.
The bearing ring materials and components are all from China’s top bearing accessories suppliers, which fundamentally solves the long-standing bearing material difference problem.
Mingqiu has a strict and complete purchase inspection system. Before entering the warehouse, the first batch of steel and components must pass systematic inspections, including material element analysis, metallographic analysis, precision inspection, and so on.

The rings and rolling elements of the bearing are mainly made of high carbon chromium bearing steel. When corrosion resistance is required, martensitic stainless steel is used.
The following table shows the composition of bearing rings and rolling element materials.

Famous ball bearings use pure bearing steel to reduce its oxides and harmful non-metallic impurities. Compared with ordinary bearing steel, its strength and quantity are significantly improved.

The material of the cage must have good abrasion resistance, dimensional stability and metal strength. Therefore, when selecting the cage material, the operating environment needs to be considered.

These lightweight cages have high strength, and surface treatment can effectively reduce friction and wear. The following table shows the material composition of cold-rolled thin steel plates.

Steel code: China JISG 3141 SPCC

Chemical composition%: Carbon: <0.12 / Silicon:-/ Manganese: <0.5 / Phosphorus: <0.4 / Sulfur: <0.45 / Chromium:-/ Nickel:-

According to the types and uses of bearings, nylon cages are used more and more widely, but they are not suitable for use in environments above 20°C or below minus 40°C. Most injection molded cages use nylon PA66. This material or With or without glass fiber reinforcement, it is characterized by a good combination of strength and elasticity.
The mechanical properties such as the strength and elasticity of nylon materials depend on the temperature and the permanent changes under operating conditions, that is, aging. The most important factors that play a role in this aging behavior are temperature, time and the medium (lubricant) in contact. The aging relationship of glass fiber reinforced nylon PA66 is shown on the right. The life of the cage is shortened as the temperature rises and the aggressiveness of the lubricant, so whether the nylon cage is suitable for a specific purpose depends on the operating conditions and life requirements.

Dust cover material

The standard material of the dust cover of the famous ball bearing is cold-rolled electro-tinned steel plate, and sometimes AISI-300 stainless steel is used.

Seal ring material

The seal ring mainly uses nitrile rubber as the material. For high temperature environments, fluorine rubber and silicone rubber are also widely used.

CAVEAT:

Fluorine rubber is safe and harmless under normal working conditions below 200°C, but when the temperature exceeds 300°C, which is equivalent to the fire of cutting steel pipes, fluorine rubber will release smoke. These fumes are harmful if inhaled to the human body, including the eyes. In addition, care should be taken to avoid contact with skin.