CuSn8 bronze bushings are a type of wrapped bronze bushings. They are made from a specific type of bronze, CuSn8, which is a high-density bronze alloy known for its excellent load-bearing capabilities and resistance to fatigue and corrosion. These bushings are usually used in heavy load and low-speed applications, such as construction machinery, agricultural machinery, and cranes.

As for lubricants, these bushings are often pre-lubricated with oils or greases to reduce friction and prevent wear. The choice of lubricant can depend on the specific application and the conditions under which the bushing will operate, such as the temperature, speed, and load.

The presence of holes in these bushings serves a specific purpose: to store lubricants. These are often called oil or grease grooves. When the bushing is in operation, the movement of the parts causes the lubricant to flow from these holes, ensuring consistent lubrication and reducing the need for frequent re-lubrication. This design contributes to the longevity and high performance of the bushings.

For optimal performance, it is important to use the right type of lubricant and to ensure that the lubrication holes are not blocked or compromised in any way. Always follow the manufacturer’s guidelines for maintenance and lubrication to ensure the bushing’s maximum lifespan and performance.

Wrapped bronze bushing is made of bronze plate with oil pockets or holes. It is a kind of wrapped greased (also sometimes graphite) lubricating bushing bearing. Bronze material normally in CuSn6.5P or CuSn8P, the bronze is made as the particular formulation with high specific and gravity, and on its surface may be incorporated with spherical or diamond shaped indentations or/and oil grooves as required by customers. The products are widely used in construction machinery, agricultural machinery and so on.

Graphite Bronze Sleeve Bushing Split type is based bronze material and embedded with solid lubricants in diamond or round shape pockets which are evenly distributed on its inside layers. Bronze Sleeve Bushing have high strength, high load capacity and the spirally distributed diamond type of the embedded solid lubricant,the high temperature lubricating action and wear resistantaction as estraordinary exploited. The lubrication area of the bearing surface is being about 25%.

Why choose wrapped bronze bearing?

• Insensitive to dirty environments
• Resistant to shock loads and vibrations at slow speeds
• Good resistance to corrosive conditions

Application

This type of bearing is particularly applied in staring motor for automobiles, generators, hoisting machines, various cranes and those machines in metallurgical industry.

• Cylindrical bearings
• Flanged bearings
• Thrust washers
• Plates
• Drawing details

Technical information and standard dimensions on the data sheet

Features

1. May work without any oil for long period 
2. Extremely high load capacity, good anti-wear and lower friction 
3. Particularly appropriate for low speed and high load 
4. Suitable for reciprocating, oscillation or intermittent motion where oil film is hard to be formed 
5. Good chemical resistant and anti-corrosion characteristics 
6. Can be used in wide range of temperature from -40℃-+300℃

Characteristics:

Bearing material CuSn8 made of solid bronze strip with perforation for lubricated applications.

Good wear resistance, suitable for rough conditions.

Optimum performance under relatively high loads and low speeds.

These holes will allow greater capacity to collect lubricant, which build up a lubrication film at the start of movement and reduce the frication.

Properties

Lubrication

Whether grease or oil is used, a good quality lubricant will reduce friction and wear by separating a bronze bushing from its shaft. To protect the bushing and lubricant in highly contaminated environments, Viiplus recommends using seals.

Structure

Technical Data: