China Custom OEM Metric Sleeve Reducer Drill Flange Aluminum Bushing 40mm Metal Iron Plastic Copper Bronze Brass Bushings bushing arm

Product Description


Product Description

Copper and Copper Alloy Casting Methods

Many existing methods of producing copper base alloy castings may be broadly subdivided into 6 separate headings as follows:
1. Sand casting and CO2 process
2. Shell molded casting
3. Die-casting
4. Chill casting
5. Centrifugal casting
6. Continuous casting
Other processes include precision investment casting and plaster mould casting.

Product Parameters


Material grade
Main features Applications
ZCuPb10Sn10 Lubrication performance, wear resistance and corrosion resistant performance is good, suitable for bimetal casting materials Surface pressure is high, and there is the lateral pressure of the sliding bearing, such as rolling rolling, vehicle use bearing, load peaks 60 mpa hit parts, as well as the highest CHINAMFG of 100 mpa bimetallic bearing bush of the internal combustion engine, and the piston pin sets, lining, etc.
ZCuPb15Sn8 Under the condition of lack of lubricant and use water quality lubricants, sliding and lubricating, free cutting, casting performance is poor, for dilute sulfuric acid corrosion resistant performance is good Surface pressure is high, and the lateral pressure of bearing, copper cooling pipe can be made from cold rolling mill, impact resistance load of up to 50 mpa parts, internal combustion engines of bimetallic bearing, mainly used for the biggest load of 70 mpa of piston pin set, acid-proof accessories
ZCuPb20Sn5 At higher sliding performance, in the absence of a lubricating medium and water as medium are particularly good self-lubricating performance suitable for bimetal casting material, sulfuric acid corrosion resistance, easy cutting, casting performance is poor High sliding speed of the bearing, and crusher, water pump, cold rolling mill bearings, piston pin load of 70 mpa
ZCuPb30 Have good self-lubrication, free cutting, casting performance is poor, easy to produce the gravity segregation High sliding velocity of bimetallic bearing shell, wearing parts, etc.
ZCuZn25Al6Fe3Mn3 With high mechanical properties, the casting performance is good, good corrosion resistance, has a tendency to stress corrosion Suitable for high strength, wear parts, such as bridge plate, nut, screw, wear-resistant plate, the slider, and worm gear, etc
ZCuZn26Al4Fe3Mn3 With high mechanical properties, the casting performance is good, in the air, water, and seawater corrosion resistance is good, can be welded Require high strength, corrosion resistant parts
ZCuZn38Mn2Pb2 Have higher mechanical properties and good corrosion resistance, abrasion resistance, good cutting performance General purpose structure, ship, instrument appearance, simple casting using such as sleeve, sleeve, bearings, slider, etc
ZCuZn40Mn3Fe1 With high mechanical properties, good casting properties and machinability, and in the air, water, and water has good corrosion resistance, has a tendency to stress corrosion cracking Seawater corrosion parts, pipe fittings and under 300 °C, manufacturing and other large Marine propeller castings
ZCuZn33Pb2 Structural material, feed temperature is 90 °C when good oxidation resistance, electrical conductivity of about 10 ~ 14 ms/m The shell of gas and water supply equipment, machinery manufacturing, electronics, precision instruments and optical instruments of component parts
Other standard and material ASTM, JIS, AISI, EN, BS;
Manganese brass: C86300 and etc.;
Tin bronze: C83600, C93200, CuSn12, CuSn7Zn4Pb7 and etc.;
Aluminum Bronze: C62900, C95400, C95500, CuAl10Fe5Ni5 and etc..


Specification Customized Bronze/Brass/Copper Alloy Centrifugal Casting Bushing with oil groove in China
Material Stainless steel, Alloy Steel, Brass, Copper, Aluminum, Aluminum alloy, Iron
Machining CNC machining center, CNC lathe
Casting tolerance IT5 – IT7,CT5-7
Machining tolerance +/- 0.005mm,ISO2768-f,ISO-mk
Heat treatment Solid solution annealed, quench and tempering
Weight range 0.1Kg-120Kg
Dimensions  ≤1200mm×800mm×400mm
Surface finish Ra 1.6-Ra 3.2
Finish Polishing ,Shoot blasting ,Glass bead sand blasting ,etc.



Customized copper casting





Brand Name


Model Number



Shaft, gear,bearing


Depends on customers’ technical drawing




Tin bronze, lead bronze, aluminum bronze, aluminum brass, manganese brass, lead brass, silicon brass

Alloy Or Not


Powder Or Not

Not Powder

Cu Content (%)


Processing Service





Customer’s Demand


copper and brass


1 PC

Our Advantages



Cast copper is a versatile material with a variety of alloys. The metal is used in plumbing fixtures, ship propellers, power plant water impellers and bushing and bearing sleeves because it is easy to cast, has a long history of successful use, is readily available from a multitude of sources, can achieve a range of physical and mechanical properties and is easily machined, brazed, soldered, polished or plated. In the U.S., copper accounts for approximately 2.8% of total casting production, according to the 2018 World Census of Casting Production reported by Modern Casting magazine. Following are 10 qualities of cast copper alloys design engineers should know.

1. Almost all copper alloys retain their mechanical properties at low temperatures. 

Typical mechanical properties of copper include good corrosion resistance, impact toughness, superior thermal and electrical conductivity, and the ability to inhibit marine organism growth.

2. All copper alloys can be produced via sand casting. 

Other casting methods conducive to copper alloys include centrifugal, continuous, permanent mold, investment and diecasting. The choice of alloy and casting method determines the mechanical and physical properties, section size, wall thickness and surface finish that can be achieved.

3. Leaded copper alloys still have several industrial applications

While leaded alloys are no longer used in potable water applications, they are still useful for other instances where low friction and wear rates are desired. For instance, high-leaded tin bronzes are cast into sleeve bearings and exhibit lower wear rates than steel.

4. As a class, cast copper-based alloys are easy to machine (especially when compared to stainless steels and titanium, their main competitors for corrosion resistance). 

Leaded copper-base alloys are the easiest to machine. These alloys are free-cutting and form small, fragmented chips while generating little heat. Next in order of machinability are moderate to high-strength alloys with second phases in their microstructures, such as unleaded yellow brasses, manganese bronzes and silicon brasses and bronzes. These alloys form short, brittle, tightly curled chips that tend to break into manageable segments. While the surface finish on these alloys will be good, the cutting speed will be lower and tool wear will increase.
The most difficult copper-base alloys for machining are the single-phase alloys such as high conductivity copper, chromium copper, beryllium copper, aluminum bronze and copper-nickel. Their general tendency during machining is to form long, stringy chips that interfere during high-speed machining operations. In addition, pure copper and high-nickel alloys tend to weld to the tool face, impairing surface finish.  

5. Post-casting processing can further enhance cast copper parts’ appeal. 

Secondary steps such as polishing, plating, soldering, brazing and welding can be performed on cast copper alloys for improved surface finish and high tolerance control.

Both gas-tungsten-arc and gas-metal-arc can produce X-ray quality welds when repairing minor defects in copper castings. Shielded-metal-arc welding also can be used, but the method is more difficult to control. Oxyacetylene welding mainly is used to join thin sections. Electron beam welding produces precise welds of high quality in both oxygen-free and deoxidized copper.

In general, alloys containing appreciable amounts of lead cannot be welded, as the lead remains liquid after the weld solidifies, forming cracks in high stress fields. All cast copper alloys can be brazed and soldered to themselves and to steel, stainless steel and nickel-base alloys. Even leaded copper alloys can be brazed, but the conditions must be controlled.

Copper phosphorous alloys, silver-based brazing alloys and copper-zinc alloys are most often used as filler metals. Gold-based alloys are used for electrical applications, and tin-based solders are used for household plumbing.

The heat of brazing may cause some loss of strength in heat-treated copper alloys, but special techniques have been developed to remedy the problem. When necessary, the entire brazed casting can be heat treated to produce a uniform structure. The corrosion resistance of copper-base alloys is not affected by brazing, except in special situations.

6. Cast copper comes in a wide range of alloy choices, making it a suitable candidate for many applications, depending on design loads and environment corrosivity.

7. Designing for cast copper alloys requires careful plHangZhou for thick and thin sections. 

Using both should be avoided, but when both are necessary, the thicker section should always be blended or tapered gradually into the thinner one. Thick-to-thin section design becomes an even larger problem for copper-base alloys with wide freezing ranges such as red brasses, tin bronzes and, to some extent, the medium freezing range alloys such as the yellow brasses. These alloys, which account for the highest level of casting production, do not solidify directionally. While proper risering helps combat this, it doesn’t have the same effect as directional solidification. 

To counteract the solidification issues with wide-freezing range copper alloys, metalcasters use chills and chromite and zircon sand cores to promote the proper solidification. Chilling these sections can be more effective than using a riser, though each of these tools increases the cost of a finished casting.

8. Whenever possible, L, T and X intersections should be avoided. 

When T sections cannot be avoided, adverse effects can be minimized by providing generous radii at corners and making the arms unequal in thickness. Additionally, “dimpling” (a small indent at the top of the T’s intersection) can help reduce the severity of hot spots. X intersections have particularly adverse effects in copper castings. They are almost always avoidable, though, by converting an X intersection into 2 offset T sections, for example.

9. Costs are comparable to other metals due to high yield, low machining costs and little requirement for surface coatings, such as paint. 

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Type: Clay Dry Sand
Casting Method: Directional Crystallization
Sand Core Type: Resin Sand Core
Application: Machinery Parts
Machining: CNC Machining
Material: Copper and Copper Alloy
US$ 5000/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

plastic bush

What are the environmental benefits of using plastic bushings, and how do they contribute to sustainability?

Plastic bushings offer several environmental benefits and contribute to sustainability in various ways. Here are some of the key advantages:

  • Reduced Energy Consumption: Plastic bushings generally have lower friction coefficients compared to metal bushings, which results in reduced energy consumption. The lower friction allows for smoother operation and requires less power to overcome resistance, leading to energy savings. This can be particularly significant in applications with high-speed or continuous motion, where energy efficiency is crucial.
  • Elimination of Lubrication: Many plastic bushings are self-lubricating or require minimal lubrication. Unlike metal bushings, which often require regular lubrication to maintain optimal performance, plastic bushings can operate effectively without the need for lubricants. This eliminates the need for oil or grease, reducing the consumption of lubrication products and minimizing the associated environmental impacts, such as oil spills or the disposal of used lubricants.
  • Corrosion Resistance: Plastic bushings are generally resistant to corrosion, which can be a significant advantage in various environments. Unlike metal bushings, which may corrode and require frequent replacement, plastic bushings can withstand exposure to moisture, chemicals, and other corrosive substances. This extended service life reduces the frequency of bushing replacements, leading to less material waste and lower environmental impact.
  • Weight Reduction: Plastic bushings are typically lighter than their metal counterparts, contributing to weight reduction in machinery and equipment. The use of lighter components can result in lower energy consumption during operation, especially in applications that involve frequent acceleration or deceleration. Additionally, reduced weight can lead to more efficient transportation and decreased fuel consumption during shipping.
  • Recyclability: Many plastic bushing materials are recyclable, allowing for the recovery and reuse of the materials at the end of their service life. Plastic bushings made from recyclable materials can be collected, processed, and transformed into new products, reducing the demand for virgin materials and minimizing waste generation. Proper disposal and recycling practices contribute to a circular economy and the conservation of natural resources.
  • Noise Reduction: Plastic bushings often exhibit superior damping properties compared to metal bushings, resulting in reduced noise and vibration levels. This can be advantageous in applications where noise reduction is important, such as in residential or office environments. By minimizing noise pollution, plastic bushings contribute to improved working conditions, increased comfort, and enhanced overall environmental quality.

By utilizing plastic bushings and benefiting from their environmental advantages, industries can contribute to sustainability efforts by reducing energy consumption, minimizing lubrication requirements, extending equipment lifespan, promoting recyclability, and improving overall operational efficiency. However, it is important to note that the sustainability of plastic bushings also depends on responsible manufacturing practices, proper disposal or recycling methods, and the selection of eco-friendly materials.

plastic bush

Can I get guidance on selecting plastic bushings based on factors like load capacity, speed, and temperature?

Yes, you can obtain guidance on selecting plastic bushings based on factors such as load capacity, speed, and temperature. Considering these factors is crucial for choosing the appropriate plastic bushings that can withstand the specific operating conditions of your application. Here are some sources that can provide guidance on selecting plastic bushings:

  • Manufacturer Documentation: Manufacturers of plastic bushings often provide technical documentation, catalogs, or product datasheets that include information on load capacity, speed limits, and temperature ratings. These resources typically outline the performance characteristics and specifications of different bushing materials and can guide you in selecting the most suitable bushings for your application. Visit the websites of reputable manufacturers or contact their customer support for access to these resources.
  • Engineering Handbooks and Reference Guides: Engineering handbooks and reference guides related to mechanical design, tribology, or materials science can offer valuable guidance on selecting plastic bushings. These resources often provide formulas, charts, and guidelines for calculating load capacity, considering speed limitations, and understanding temperature effects on various materials. Look for industry-standard handbooks or reference guides that cover topics relevant to your application and consult the sections on bushing selection.
  • Industry Associations and Standards Organizations: Industry associations and standards organizations in the machinery, automotive, or related sectors may have published guidelines or standards for selecting plastic bushings based on load capacity, speed, and temperature considerations. Visit their websites or contact them directly to inquire about any available resources or recommendations. These organizations often have technical committees and experts who can provide valuable guidance based on industry best practices.
  • Consulting with Application Engineers: If you require more personalized guidance, consider consulting with application engineers or technical experts who have expertise in the field of bushing selection. Application engineers can assess your specific application requirements, including load capacity, speed, and temperature, and make recommendations based on their experience and knowledge. Reach out to plastic bushing manufacturers, suppliers, or engineering consulting firms to inquire about their consulting services.
  • Online Forums and Communities: Participating in online forums and communities focused on machinery, engineering, or tribology can provide access to collective knowledge and experiences of professionals in the field. Engage in discussions, ask questions, and seek guidance on selecting plastic bushings based on load capacity, speed, and temperature requirements. Experienced members of these communities can often provide practical insights and recommendations.

When selecting plastic bushings, it’s important to consider not only the load capacity, speed, and temperature requirements but also factors such as the specific application environment, chemical compatibility, and maintenance considerations. It’s recommended to gather information from multiple sources and consult with experts to ensure the most suitable selection for your application.

By utilizing the available guidance and expertise, you can make informed decisions when selecting plastic bushings, considering factors such as load capacity, speed limits, and temperature requirements, thereby optimizing the performance and reliability of your machinery or equipment.

plastic bush

What are the advantages of using plastic bushings over traditional metal bushings in machinery?

Using plastic bushings in machinery offers several advantages compared to traditional metal bushings. Plastic bushings, also known as polymer bushings or plain bearings, are made from various synthetic materials such as nylon, PTFE (polytetrafluoroethylene), UHMW (ultra-high-molecular-weight polyethylene), or composite polymers. Here are some advantages of using plastic bushings:

  • <strong(Self-Lubrication): Plastic bushings often have inherent self-lubricating properties. They contain solid lubricants or have low-friction surfaces, reducing the need for additional lubrication. This feature reduces maintenance requirements, eliminates the risk of oil or grease contamination, and improves the overall reliability and cleanliness of the machinery.
  • Low Friction and Reduced Wear: Plastic bushings typically exhibit low coefficients of friction, resulting in smoother operation and reduced wear on mating surfaces. The lower friction reduces energy consumption and heat generation, contributing to improved efficiency and extended equipment lifespan.
  • Noise Reduction: Plastic bushings often dampen vibration and noise, resulting in quieter machinery operation. This is particularly beneficial in applications where noise reduction is essential, such as in consumer appliances or precision equipment.
  • Corrosion Resistance: Unlike metal bushings, plastic bushings are generally resistant to corrosion and chemicals. They can withstand exposure to harsh environments, including moisture, chemicals, and certain acids or alkalis, without deteriorating. This corrosion resistance contributes to longer service life and reduced maintenance requirements.
  • Lightweight: Plastic bushings are typically lighter than their metal counterparts. This can be advantageous in applications where weight reduction is important, such as in automotive or aerospace industries, as it can contribute to improved fuel efficiency and overall performance.
  • Cost-Effectiveness: Plastic bushings are often more cost-effective compared to metal bushings. They can be produced at a lower cost, and their self-lubricating properties eliminate the need for additional lubricants and associated maintenance costs. Additionally, plastic bushings can reduce the wear on mating parts, extending the lifespan of the overall system and reducing replacement costs.
  • Design Flexibility: Plastic bushings offer design flexibility due to their ability to be molded into complex shapes. This allows engineers to design customized bushings to fit specific applications, optimizing performance and reducing the need for additional components or modifications.

It’s important to note that the advantages of plastic bushings may vary depending on the specific application and operating conditions. In certain high-load or high-temperature scenarios, metal bushings may still be preferred. Therefore, it’s crucial to consider factors such as load capacity, temperature range, speed, and environmental conditions when selecting the appropriate bushing material for a given machinery application.

By leveraging the advantages of plastic bushings, machinery can benefit from improved performance, reduced maintenance, extended lifespan, and enhanced overall efficiency.

China Custom OEM Metric Sleeve Reducer Drill Flange Aluminum Bushing 40mm Metal Iron Plastic Copper Bronze Brass Bushings   bushing arm	China Custom OEM Metric Sleeve Reducer Drill Flange Aluminum Bushing 40mm Metal Iron Plastic Copper Bronze Brass Bushings   bushing arm
editor by CX 2024-04-10