Four Common Materials Composing Deep Groove Ball Bearing

In the production process of bearings, different types and different demand bearings require different materials, because different service environments require deep groove ball bearing to have different characteristics.

Bearing alloy is a general term for alloys used in manufacturing bearings. It is also called Babbitt alloy, which is a low-melting-point bearing alloy with hard particle phases distributed on a soft matrix. There are three series: tin-based, lead-based, and cadmium-based. Babbitt alloy is a well-known bearing material, including tin-based and lead-based bearing alloys with anti-friction properties. It is named after its inventor, the American Babbitt. Due to its white color, it is also called white alloy, and its application can be traced back to the Industrial Revolution era.

Analysis of Four Common Materials for Deep Groove Bearing

1. Materials for rings and balls: The rings and balls are usually made of high-carbon chromium bearing steel. Most deep groove ball bearing use SUJ2 steel in JIS steel grades, which is equivalent to domestic GCr15 (chromium steel). The chemical composition of SUJ2 has been standardized as a bearing material in various countries around the world. For example, it is the same steel grade as AISL52100 (USA), DIN100Cr6 (West Germany), and BS535A99 (UK). In addition to the above-mentioned steel grades, depending on specific applications, high-speed steel with excellent heat resistance and stainless steel with good corrosion resistance are also used as bearing manufacturing materials.

2. Cage materials: The material of stamping cages is made of low-carbon steel. Depending on the application, brass plates and stainless steel plates can also be used. The materials for iron cages include high-strength brass, carbon steel, and synthetic resins.

3. Dust covers and seals: The standard material for dust covers is carbon steel. If needed, AISI-300 stainless steel can also be selected. Different types of sealing materials can be used to achieve high-temperature operation and compatibility with grease. Fluorocarbons, silicone resins, and PTFE seals are usually used at high temperatures.

4. Lubricants: Bearings with dust covers and seals are filled with standard grease. Different lubricants can be used according to actual requirements, and open deep groove ball bearings use standard lubricating oil.