slewing bearing 

is a common mechanical parts that support and rotate large structures, such as bridges, buildings, and wind turbines. Rotary support is composed of parts of the internal and external ring, rolling body, maintenance frame and sealing circle. The choice of material is essential for its performance and life. In this article, we will explore the materials and characteristics of common rotation support in order to better understand this important mechanical parts.

The material of the backbone support

1. Carbon steel

Carbon steel is a common rotary support material. Its main feature is low price, high strength, easy processing and heat treatment. Carbon steel rotation branches are suitable for small and medium -sized structures, such as excavators, cranes, etc. However, carbon steel is easy to rust and requires regular anti -rust oil to extend the service life.

2. Alloy steel

Compared with carbon steel, alloy steel rotation branches have higher strength and better corrosion resistance. Its additional elements can improve its hardness, toughness and abrasion resistance, and make it more suitable for large structures with high load and high -speed rotation, such as cranes and building rotation towers. The price of alloy steel rotation support is relatively high, but its long life and less maintenance needs can reduce the overall cost in long -term use.
Rotary support 3. Stainless steel

The stainless steel rotation support has good corrosion resistance and high strength. It is suitable for the structure of working in a humid and corrosive environment, such as offshore wind turbines and port cranes. Compared with carbon steel and alloy steel, stainless steel rotation branches are higher, but their long -term durability and less maintenance costs make it an irreplaceable choice under some special occasions.

4, cast iron

The cast iron rotation support has abrasion resistance and corrosion resistance, and is suitable for the structure of heavy load and slow rotation, such as bridges and buildings. Its price is relatively low, but its strength and toughness are not as good as steel, so it is only applicable to some specific applications.

In short, the selection of materials for rotating support should be determined according to factors such as its application environment, load and rotation speed. When selecting materials, you need to consider the strength, wear resistance and other factors of the material. Different materials affect the performance and life of the bearings. Be careful when choosing