Which Self-Lubricating Bronze Bushing Materials and Shapes Are Available?


In the world of machinery and engineering, self-lubricating bronze bushings play a pivotal role. These unassuming components ensure that mechanical systems run smoothly by reducing friction, wear, and the need for constant maintenance. If you’re in the market for self-lubricating bronze bushings, this article is your comprehensive guide to the materials and shapes available.

Understanding Self-Lubricating Bronze Bushings

Before we dive into the specifics, let’s get a grasp of what self-lubricating bronze bushings are. These are crucial components used in various industries, from automotive to heavy machinery. They are designed to provide a low-friction interface between two moving parts, reducing wear and extending the lifespan of the machinery.

types of wear sleeves. BRONZED BUSHING

Materials of Self-Lubricating Bronze Bushings

1. Bronze Alloys

Bronze bushings are primarily made from various bronze alloys, each with its unique set of properties. Some of the common bronze alloys used for these bushings include:

a. Phosphor Bronze

Phosphor bronze is known for its excellent wear resistance, making it ideal for heavy-load applications.

b. Aluminum Bronze

Aluminum bronze bushings are corrosion-resistant and suitable for applications in harsh environments.

c. Manganese Bronze

Manganese bronze offers high tensile strength, making it perfect for applications where durability is essential.

Bronze Bushing Alloys Specifications

C90300B271 B505 B584J461, J462 (formerly 620)C-15345,ALLOY 8
C90500B271 B505 B22 B584J461, J462 (formerly 62)4845QQ-C-390
C90700B505J461, J462 (formerly 65)QQ-C-390
C92200B271 B505 B61 B584J461, J462 (formerly 622)C-15345,ALLOY 9 B-16541QQ-C-390
C92300B271 B505 B584J461, J462 (formerly 621)C-15345,ALLOY 10 B-16540QQ-C-390
C92700B271 B505J461, J462 (formerly 63)QQ-C-390
C93200B271 B505 B22 B584J461, J462 (formerly 660)C-15.12, ALLOY 12QQ-C-390
C93400B505C-15345,ALLOY 11 C-22087 C-22229QQ-C-390
C93500B271 B505 B584J461, J462 (formerly 66)QQ-C-390
C93700B271 B505 B22 B584J461, J462 792 (formerly 64)4827 4842QQ-C-390
C93800B271 B505 B66 B584J461, J462 (formerly 67)QQ-C-390
C94300B271 B505 B66 B584J461, J4624840QQ-C-390
C95300 C95300HTB271 B505 B148J461, J462 (formerly 688)C-11866, COMP.22QQ-C-390
C95400 C95400HTB271 B505 B148J461, J4624870 4871 4872 4873C-15345,ALLOY 13 C-11866,COMP.23QQ-C-390
C95500 C95500HTB271 B505 B148J461, J462C-15345,ALLOY 14 C-22087 B-21230 C-22229QQ-C-390
C86300B271 B505 B22 B584B271 B505 B22 B5844862C-15345,ALLOY 6 C-22087 C-11866,COMP 21 C-22229QQ-C-390
C86400B271 B505 B584QQ-C-390

2. Solid Lubricants

To make bronze bushings self-lubricating, manufacturers often embed solid lubricants into the bronze material. These solid lubricants can include:

a. Graphite

Graphite is a popular choice, known for its self-lubricating properties and ability to withstand high temperatures.

b. PTFE (Polytetrafluoroethylene)

PTFE is widely used for its low friction and non-stick properties, making it an excellent choice for applications with sensitive components.

3. Composite Materials

Some self-lubricating bronze bushings are made from composite materials, combining bronze with other substances to enhance performance. These materials offer a unique blend of characteristics tailored to specific applications.

Shapes of Self-Lubricating Bronze Bushings

1. Cylindrical Bushings

Cylindrical bronze bushings are the most common shape and are used in a wide range of applications. They are simple to install and provide excellent load-bearing capabilities.

2. Flanged Bushings

Flanged bronze bushings come with a flange, which acts as a thrust washer and simplifies the assembly process. These are often used in applications where axial movement is required.

3. Thrust Washers

Thrust washers are flat, disc-shaped bronze bushings designed to handle axial loads. They are often found in automotive and industrial applications.

4. Spherical Bushings

Spherical bronze bushings are designed to accommodate angular misalignment and are commonly used in linkages and control systems.

5. Custom Shapes

Manufacturers can produce custom shapes to meet specific design requirements. These can vary widely and are often tailored to unique applications.

Applications of Self-Lubricating Bronze Bushings

Self-lubricating bronze bushings find applications in various industries, including:

  • Automotive
  • Aerospace
  • Marine
  • Agriculture
  • Construction
  • Industrial machinery

These bushings are versatile and can be used wherever reduced friction and extended component life are essential.


Self-lubricating bronze bushings are indispensable in the world of machinery and engineering. With a wide range of materials and shapes available, they can be tailored to suit specific needs. Whether you’re working in the automotive, aerospace, or industrial sector, self-lubricating bronze bushings have a role to play in ensuring smooth operations.


  1. How do self-lubricating bronze bushings reduce maintenance costs? Self-lubricating bronze bushings reduce maintenance costs by minimizing friction and wear, thereby extending the lifespan of components and reducing the need for frequent maintenance.
  2. Can self-lubricating bronze bushings withstand extreme temperatures? Yes, some self-lubricating bronze bushings are designed to withstand high temperatures, thanks to the use of materials like graphite and PTFE.
  3. What are the advantages of using composite materials in self-lubricating bronze bushings? Composite materials offer a tailored blend of characteristics, allowing manufacturers to optimize performance for specific applications.
  4. Where are spherical bronze bushings commonly used? Spherical bronze bushings are often used in linkages and control systems where angular misalignment needs to be accommodated.
  5. Are custom-shaped bronze bushings expensive to manufacture? The cost of custom-shaped bronze bushings can vary depending on the complexity of the design and the materials used, but they are often a worthwhile investment for specialized applications.