Explore a Wide Range of Bronze Tuleja RG7, Tuleja CuSn7Zn4Pb7

The CuSn7Zn4Pb7-C alloy, also referred to as RG7 or CC493K, is a common type of tin bronze alloy utilized in the fabrication of bronze Tuleja bushings and bearings. This alloy exhibits favorable mechanical properties, including a tensile strength of 260 N/mm², a yield strength of 120 N/mm², and an elongation of 12%. It boasts a Brinell hardness of 70, making it well-suited for general-purpose bearing applications and fittings.

Tuleja RG7，Tuleja CuSn7Zn4Pb7 The composition of CuSn7Zn4Pb7-C is as follows:

• Copper (Cu): 83-87%
• Tin (Sn): 6.5-7.5%
• Zinc (Zn): 3-5%
• Lead (Pb): 6-8%
  

  Tuleja RG7 high tensile brass

This composition contributes to outstanding wear resistance, a high load-bearing capacity, and effective thermal conductivity. The inclusion of lead in the alloy enhances its machinability.

Tuleja Bronze bushings crafted from this alloy are known for their resistance to heavy mechanical loads, decent anti-corrosion properties, and suitability for use in high humidity environments and under fluctuating temperature conditions. They find extensive applications in industrial equipment such as turbines, pumps, machine tools, reducers, rolling mills, and generators.

The manufacturing process typically involves centrifugal casting, ensuring the production of high-quality components with uniform material distribution. Some variants of these alloys possess self-lubricating properties, further improving their wear resistance and reducing maintenance requirements.

The CuSn7Zn4Pb7-C alloy complies with EN 1982 CC493K standards and offers excellent corrosion resistance. It is also commonly known as SAE 660 bronze or bearing bronze.

In terms of applications, this alloy is utilized in crane and elevator bearings, minor machine tool bearings, piston pin bushes designed for loads up to 50N/mm², bearings for packing machinery and electric motors, as well as general-purpose bearings in mechanical engineering applications with medium loads.

The service life of these Tuleja bushings depends on the specific bronze type used in their production, and the presence of certain elements in the material can also influence their properties.