Copper Bushing Manufacturer

Copper Sleeve bushing has good chip processing and casting properties, good corrosion resistance to air and water, and can maintain good sliding and self-lubricating properties without lubricant. We can customize all kinds of copper bushings for you. Contact us Now!

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Aluminum Bronze Bushing
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C93200 Tin Bronze Bushing
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Copper Bushing Bearing Factory

The embedded self-lubricating copper sleeve bushing is a new type of anti-pressure solid lubrication composite material, is in the copper sleeve as a metal matrix friction surface to develop an orderly arrangement, the size of the appropriate cavity, and embedded graphite as a solid lubricant with self-lubricating properties of the product.

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copper bushing, self-lubricating bearings VS oilite bushings
oilless flange bearing, graphite filled bronze bushes
copper bushing, custom bronze bushing

What Is Copper Bushing?

Copper sleeves, also known as copper bushings, are divided into many types, including machine copper rollers, copper bearings, etc. It is used in various light industries, large and heavy machinery, and is an important component of machinery.

Traditional Tin Bronze Bearing

High hardness, excellent wear resistance, not easy to cause seizure, good casting performance, and cutting performance, and good corrosion resistance in the atmosphere and fresh water. In the absence of lubricants and water-based lubricants, it has good sliding properties and self-lubricating properties, easy cutting, and good corrosion resistance to dilute sulfuric acid. Used in Marine Engineering, Construction Bearing, etc.

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Graphite Copper Bearing

Graphite copper bearing, the surface consists of a metal substrate and a molded solid lubricant with unique self-lubricating properties embedded in the holes or grooves of the substrate. The graphite-plugged copper bushing combines the respective advantages of metal and specially formulated lubricating material, which can complement each other, i.e., it has the high load-bearing capacity of metal and the lubricating performance of wear-reducing material, breaking through the limitation of general bushings relying on oil film lubrication.

Self-lubricating Graphite Plugged Copper Bearing

Copper bearing with graphite makes solid lubrication and shaft friction through friction heat in the process of use, forming excellent conditions of oil and powder coexistence lubrication, which not only protects the shaft from wear but also makes the solid lubrication characteristics eternal. However, its hardness is twice as high as general bushings, and its wear resistance is also twice as high.

copper bushing

Casting Method Of Copper Bushing

BUCHSE, Conveyor Belts bearing bronze,copper bushingMetal-type copper bushing casting refers to a casting method where liquid metal is poured into a metal mold, known as the metal type, under the influence of gravity. The metal then cools and solidifies in the mold to obtain the castings. This process benefits from the high thermal conductivity and heat storage capacity of the metal mold, resulting in fast cooling of the liquid metal and producing castings with dense microstructures and high mechanical properties. Additionally, metal-type casting offers high dimensional accuracy and low surface roughness values.

Sand casting is a casting method that produces castings using sand molds. Steel, iron, copper bushings, and most non-ferrous alloy castings can be obtained using the sand casting method. Sand casting is favored for its low-cost molding materials and easy availability, as well as its adaptability to single-piece production, batch production, and large-scale production.

Centrifugal casting involves pouring liquid metal into a rotating mold, where under the action of centrifugal force, the metal fills the mold and solidifies to form the copper bushing. The distinctive feature of centrifugal casting is that the metal liquid is forced into the mold and solidifies due to centrifugal force, resulting in good metal feeding and solidification, dense outer microstructure, reduced non-metallic inclusions, and excellent mechanical properties. This method eliminates the need for mold and core making, saving on related materials and equipment investments.

The role of copper sleeves in construction machinery

The copper bushing plays a vital role in various engineering machinery devices such as excavators, loaders, bulldozers, cranes, boom-style concrete pumps, and aerial work vehicles. It is a commonly used joint component in the articulated structures of these machines. A properly designed copper bushing should have a reasonable clearance, which allows the storage of lubricating grease. This ensures that the bucket shaft and bushing experience reduced wear and resistance during relative movement. The appropriate clearance also allows for a certain amount of space to accommodate the thermal expansion that occurs when the shaft and bushing move relative to each other, preventing sintering.

If the clearance in the joint exceeds specifications, it can lead to a loose fit between the shaft and bushing, causing vibration, impact, and uneven wear. This can accelerate wear and even result in the fracture of the bucket shaft, posing significant equipment and safety risks. Excessive joint clearance can also cause deviations and instability in the operation of the engineering machinery, leading to decreased operational precision and efficiency. Therefore, maintaining a proper joint clearance is crucial for improving the reliability of engineering machinery.

Copper bushings are mechanical lubrication components available in various types based on their materials and manufacturing processes. In the case of engineering machinery, graphite copper bushings are commonly used.

Graphite copper bushings are made using graphite as a material, which has a relatively loose structure, making it easy to create holes and cavities during production. The surface of the bushing is embedded with solid lubricants, creating a self-lubricating bearing. This reduces the need for lubricating oil while enhancing the efficiency of the engineering machinery.

As the number and sophistication of engineering machinery continue to grow, the demand for components like copper bushings and bearings is rapidly increasing. Copper bushings, being critical elements that enable the machinery to function, are essential to select wisely.

Graphite copper bushings, with their self-lubricating properties, enable engineering machinery to operate smoothly, reducing the consumption of various materials and enhancing overall efficiency. Therefore, for large, heavy-duty, and complex machinery, including engineering machinery, graphite copper bushings and self-lubricating bearings are preferred choices to ensure optimal performance.

The Versatility and Reliability of Copper Bushings: A Guide to Cast Copper Bushing C0305-04


Copper bushings, also known as bronze bushings, play a crucial role in reducing friction and wear between moving parts in various industrial applications. These components are designed to withstand heavy loads, offer excellent heat dissipation, and provide long-lasting performance. In this blog, we will explore the features and benefits of the cast copper bushing C0305-04, including its size chart and specifications.

The Cast Copper Bushing C0305-04 – Overview

The Cast Copper Bushing C0305-04 is a prime example of high-quality, off-the-shelf economy for general bearing applications. Made from continuous cast bronze, this bushing offers exceptional strength, durability, and a uniform grain structure throughout, ensuring consistent performance in various operating conditions.

Size Chart and Specifications

The C0305-04 copper bushing boasts precise dimensions to accommodate different machinery and equipment requirements. Here are the key specifications for this versatile component:

Inner Diameter (ID): 3/16 in
Outer Diameter (OD): 5/16 in
Overall Length: 1/2 in
Material: C93200 SAE 660 Cast Bronze (Continuous Cast Bronze / ASTM B505)
Material Standard: SAE 660/C93200
Inner Diameter Tolerance: +.001 to -.001 in
Outside Diameter Tolerance: +.002 to .003 in
Overall Length Tolerance: .005 in
Chemical Composition:
Copper (83%)
Tin (7%)
Lead (7%)
Zinc (3%)
Meets QQ-C-390B, Type III standards
Load and Performance Ratings:
Max PV (Pressure-Velocity) Rating: 75,000
Max P (Pressure) Rating: 4,000
Max V (Velocity) Rating: 750
Temperature Range: Suitable for temperatures up to 450°F
DFARS Compliant
Origin: Manufactured in China
Applications and Advantages

The C0305-04 cast copper bushing is ideal for a wide range of general bearing applications, providing reliable and efficient performance in various industries, including automotive, machinery, agriculture, and more. Its remarkable features include:

High Load Capacity: With its robust construction and material composition, the C0305-04 can withstand heavy loads, making it suitable for demanding applications.

Self-Lubricating: The C93200 SAE 660 Cast Bronze material exhibits natural lubricity, reducing the need for additional lubrication in moderate conditions.

Customization Options: These standard size cast bronze bearings can be easily resized, oil-grooved, or drilled to meet specific requirements, offering adaptability for diverse applications.

Heat Resistance: The bushing’s ability to function satisfactorily in temperatures up to 450°F ensures stable performance even in high-temperature environments.


The cast copper bushing C0305-04 is a versatile and reliable component, offering exceptional performance and longevity in various applications. Its precise dimensions, high load capacity, and natural lubricity make it an excellent choice for general bearing needs. Whether you’re looking to reduce friction, improve equipment efficiency, or increase durability, the C0305-04 copper bushing is a dependable solution that meets industry standards and ensures smooth machinery operation.

Always remember to verify the specific requirements of your application and consult with manufacturers or suppliers to find the perfect fit for your needs. The C0305-04 copper bushing is a valuable addition to any machinery, promising longevity, efficiency, and reduced maintenance costs for years to come.

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Copper Bearing Bushing Sleeve

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A Large Copper Sleeve Bushing

Centrifugal casting is widely used in producing copper sleeves. As pore and inclusion defects appearing in the sur- face were eliminated, obtaining excellent huge marine copper bushing bearing.

Large copper bushings are used on various large and heavy machinery and are important group city parts on machinery.

Types Of Copper Bearing

Our copper bearing products include graphite copper bushing, white graphite copper bearing, flanged copper sleeve bushing, automotive mold guide bushing, double flange shaft tile, mold guide bushing, square flange copper bushing, self-lubricating guide plate, thrust washer, joint bearing, graphite steel bushing, and non-standard customized copper bushing.

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Marine Bearing →
copper bushing
Mining Machinery Bearing →

Coal Mining Machine Applications

The Rocker arm of the shearer, traction between the bracket and hinged with cone shaft taper sleeve, downhole in use process, often appear the rocker and bracket, bracket and traction of hinged lock cone axis, radial normal lift and remove the difficult problem. Aiming at the problems, from two aspects of design and use of analysis research, through actual use of graphite embedded copper bearing, to improve the lubrication effect of the cone shaft, improves the wear resistance, effectively solved the problem of the cone shaft lock.

Improve Efficiency & Save Cost

Long-term use of self-lubricating graphite bushings without frequent maintenance, reducing the amount of worker labor and improving coal mine production efficiency.

Types of Bronze Bearing

Some other types of bronze for you to choose the best bronze for bearings or bushing, like silicon bronze is a metal alloy made from copper and silicon, with the addition of phosphorus. It is used in bearings because it has a very low coefficient of friction.

Bronze Bushing Material

SAE 660 bronze or c932 / c93200 bearing bronze

It is known as high-leaded tin, this type of bronze is commonly used for bearings or Bushing widely applications in many industries.

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SAE 841 bronze is sintered bronze sleeve bearing or oil-impregnated bronze bearings and phosphor bronze bearings

This type of bronze is designed for self-lubricating bushing

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SAE 863 bronze is oil-impregnated bearings

Mostly used for self-lubricating powdered metal bearing that is typically harder, higher strength

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954 Aluminum Bronze also called manganese bronze

It is the alloy that offers excellent performance in grooved bushing and bearings and more applications.

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Bronze Spider Bushing

Bronze Spider Bushings, also known as Eccentric Bushings, might not steal the spotlight, but they are the unsung heroes of machinery. These small cylindrical components, often made of bronze or similar materials, might not look like much, but they play a critical role in various machines and equipment, especially in industries where precision and durability are paramount.


Bronze Sliding Pad

Bronze sliding pads, also known as slide bearings or bushings, are mechanical components designed to reduce friction between moving parts.


Bronze Guide Blocks

Get the best results with our high-performance guide blocks, Wholesale Durable Bronze Guide Blocks at


Brass Flanges

Wholesale ISO Certified Brass Flanges at Competitive Prices, Profession service. Fast Delivery.


PTFE Plugged Bronze Bushings

PTFE Plugged Bronze Bushings is made of high-strength casting bronze, with PTFE solid lubricant embedded in holes on the working surface of bearings, they can be used in jet, propeller, ship, boatyard, offshore platform, hydraulic turbine, etc.