What are the choices of materials for slewing bearings?
As an important mechanical component, slewing bearings are widely used in various industrial equipment and mechanical equipment. The choice of materials has a great impact on their performance and life. When choosing the material of the slewing bearing, it is necessary to consider the working conditions, load requirements, speed requirements and other factors of the environment, and choose the appropriate material according to different situations. Here are some common slewing bearing material choices:
1. Bearing steel: Bearing steel is a commonly used material. Its main components are alloy elements such as carbon, silicon, manganese, chromium, and molybdenum. It has good wear resistance and strength and is suitable for slewing bearings under general working conditions. After the bearing steel is processed into slewing bearing parts, it can be properly heat treated to improve its surface hardness and wear resistance and extend its service life.
2. Stainless steel: Stainless steel has the advantages of good corrosion resistance, high strength, and strong wear resistance. It is suitable for some high-demand working environments, such as food, medical equipment and other fields. Stainless steel slewing bearings mainly include 304, 316 and other series. Different levels of stainless steel materials can be selected according to specific requirements.
3. Aluminum alloy: Aluminum alloy is lightweight, corrosion-resistant, and has good thermal conductivity. It is suitable for some occasions where lightweight is required in some environments. Aluminum alloy slewing bearings are mostly used in aerospace, shipbuilding and other fields, which can effectively reduce the weight of equipment and improve overall performance.
4. Copper and bronze: Copper and its alloys have good thermal conductivity and wear resistance, and are suitable for slewing bearings under high-speed operation and high-temperature working conditions. Bronze materials are usually used in high-demand components such as friction parts and bearings, and have good wear resistance, corrosion resistance and thermal conductivity.
5. Polymer: Polymer is a new type of slewing bearing material with the characteristics of light weight, corrosion resistance, and low noise. It is suitable for some occasions with high requirements for noise and weight. Polymer slewing bearings have good self-lubricating properties, can reduce friction losses during work, and improve overall efficiency.
6. Engineering plastics: Engineering plastics are a type of polymer material with high mechanical properties and comprehensive properties, and are widely used in the material selection of slewing bearings. Engineering plastics have the advantages of good wear resistance, heat resistance, corrosion resistance, etc., which can meet the needs of various working conditions.
