Cast Bronze Bushings

Bearings and Bushings for the Future: Precision and Customization: Our company, in bearing engineering with decades of experience, designs and develops high-precision self-lubricating bronze bearings & plain bushes. We offer a wide array of sliding bearings tailored to meet specific needs. Renowned for our expertise in custom bronze bushing and slide plate solutions, we provide an expansive selection of bushing metal alloys. Contact us today to benefit from unparalleled services at competitive prices.

Cast Bronze Bushings

Leaded, Phosphor And Aluminium Bronzes Plates and Bearing，

Wear Plates – Mold and Die Products, Search Our Material Alloy

Composites and Metallic Bearings, Bushing Manufacturing,

Cast Bronze Metric Bearings and Bushings

Custom Cast Bronze Bearing solutions for your engineering needs, Metric Cast Bronze – Bushings

CDA 932 or SAE 660 cast bronze sleeve bearings are manufactured from continuous cast bronze, ensuring a uniform composition throughout the bearing. This method significantly minimizes the risk of porosity and other defects commonly associated with other casting techniques. Cast copper bushings are indispensable components in industrial applications. Through the use of various copper alloy materials and custom designs, they can meet a wide range of performance requirements and operating environments. Centrifugal and continuous casting techniques make the production of copper bushings more efficient and precise, while the capability for rapid manufacturing of custom designs ensures that specific customer needs are quickly met. Global slide bearing technology supplier and premier provider of customized, high-precision bearing solutions for: We produce super-precision bearings, bushing and specialty bearing units using state of the art production techniques. Our customers value our broad application expertise and technical cooperation, especially during the design phase. Based on short development times, they receive solutions that are economically attractive precisely fitted to technical requirements.

 

Cast Bronze

“The High Quality Cast Bronze Bushing at the Low Cost!”

Custom solutions for your engineering needs.

Standard Cast Bronze Bearings – Bronze Standards.

To find the specific Cast Bronze product you require, simply click on the corresponding small product image located in the right column. Our range includes sleeves, flanges, thrust washers, and wear plates (where available). Our products are made from high-quality Cast Bronze SAE 660 / CDA 932, and come with a broad array of additional capabilities. As a recognized OEM and producer of subassemblies, components, and parts, we are committed to continuous innovation in our materials, processes, and solutions. We develop highly-engineered products tailored for customers across diverse industries where the performance of the product is crucial. We are a globally recognized leader in designing and manufacturing bearings and bushings, dedicated to excellence in every aspect of our business.

Cast copper bushings are widely used bearing components in various machinery and equipment, typically made from different copper alloy materials to meet diverse performance requirements and application conditions. Centrifugal casting and continuous casting are two common methods used to produce copper bushings with specific shapes and sizes.

Standard Materials:

  • CuSn12: This copper alloy contains 12% tin and offers good corrosion resistance and mechanical properties, commonly used for bearings in marine and chemical environments.
  • CuSn7ZnPb (RG7): This alloy, containing tin, zinc, and lead, provides excellent wear resistance and load-bearing capacity, suitable for high-load bearing applications.
  • CuSn10: A copper alloy with 10% tin, it offers higher strength and good corrosion resistance, suitable for medium-load bearings.
  • CuSn12: Similar to CuSn10 but with a higher tin content, offering better performance.
  • CuPb10Sn: This alloy contains lead and tin, providing good lubricity and wear resistance, suitable for bearings requiring low friction and high load-bearing capacity.
  • CuAl10Ni: Combining the benefits of aluminum and nickel, this alloy offers high strength and good corrosion resistance, suitable for high-performance applications.
  • CuSn10Zn (RG10): Containing tin, zinc, and copper, this alloy has good overall performance and is suitable for various conditions.
  • CuZn25Al5: This alloy has a higher proportion of zinc and aluminum, offering good strength and corrosion resistance, suitable for demanding applications.
  • CuSn5ZnPb (RG5): Containing tin, zinc, and lead, this alloy provides good wear resistance and load-bearing capacity, suitable for general bearing applications.

Custom Designs: Besides standard materials, copper bushings can be specially designed and manufactured according to customer-specific requirements. These custom designs may include:

  • Integrated Cast Flanges: Copper bushings can be designed with integrated cast flanges for easy installation and fixation.
  • Water Inlet Holes: To meet cooling or lubrication needs, copper bushings can be designed with water inlet holes.
  • Lipped Edges: Copper bushings can feature lipped edges to provide additional sealing or support.
  • Inner and Outer Steps: To accommodate different assembly requirements, copper bushings can have inner and outer steps.
  • Milled Grooves: Copper bushings can be machined with milled grooves to offer additional positioning or fixation capabilities.

MATERIAL LIST

Material description DIN Alloy No. ASTM Alloy No. British Alloy No. Chemical Composition Yield Strength N/mm² Tensile Strength N/mm² Elongation % E-module x 10³ Hardness HB Application
CuSn7ZnPb, CuSn7ZnPb, CuSn7ZnPb C93200 LG2 Cu 81-85 Sn 5-6 Zn 3-5 Pb 5-7 Ni 2 max Sb 3.3 max 120 240 15 106 65 Medium-hard bearing alloy Good anti-friction properties Seawater resistant Applicable for light edgeloads
CuSn12Pb, CuSn12Pb, CuSn12Pb C92500 PB2 Cu 84-88 Sn 11-13 Pb 1-2 Ni 2 max Sb 0.2 max P 0.2 max 140 260 10 112 80 Material for high loads Seawater resistant
CuAl10Ni, CuAl10Ni, CuAl10Ni C95500 AB2 Cu 75 min Al 8.5-11 Ni 2-8.5 Fe 3.5-5.5 Mn 3.3 max 270 600 12 122 140 Hard Ni-Al bronze Very high strength Excellent wear resistance Corrosion-resistant Seawater resistant High temperature strength
CuZn25Al5, CuZn25Al5, CuZn25Al5 C86300 Cu 60-67 Al 3-7 Fe 1.5-4 Mn 2.5-5 Zn balance Ni 3 max 450 750 8 115 200 Water resistant High strength bearing alloy High fatigue resistance Not applicable for seawater applications
  1. Sand casting
  2. Continuous casting
  3. Centrifugal casting

BEARING PROPERTIES

Bronze Material Solid Lubricant p static (N/mm²) p dynamic (N/mm²) Friction dry Friction wet v (m/s) max. max p.value N/mm² x m/s Temp. °C max. Shaft Hardness HB (min) Shaft Finish R. (µm)
CuSn7ZnPb SL 4 80 40 0.11 – 0.13 0.07 – 0.12 0.4 1.2 80 180 0.2 – 0.8
CuSn12Pb SL 1 100 30 0.12 – 0.14 Not available 0.5 1.0 250 180 0.2 – 0.8
CuAl10Ni SL 4 150 90 0.13 – 0.15 0.07 – 0.12 0.4 1.5 350 300 0.2 – 0.8
CuZn25Al5 SL 1 150 80 0.14 – 0.16 0.07 – 0.12 0.15 1.0 300 300 0.2 – 0.8

The above-stated bearings properties are valid for optimal operating conditions. Through changes of the application conditions such as e.g. higher sliding speed or shaft roughness, these values are subject to change.

ASTM B505 Closest viiplus Alloys Closest Alloys Type of Alloy
C83600 C83600 / C836 / CDA836 CC491K – CuSn5ZnPb5-C
C84400 C84400 / C844 / CDA844 CC490K – CuSn3Zn8Pb5-C
C86200 C86200 / C862 / CDA862 CC764S – CuZn34Mn3Al2Fe1-C High Tensile Brass
C86300 C86300 / C863 / CDA863 CC762S – CuZn25Al5Mn4Fe3-C High Tensile Brass
C90300 C90300 / C903 / CDA903 – Tin Bronzes
C90500 C90500 / C905 / CDA905 –
C90700 CC483K – CuSn12-C
C92200 C92200 – Tin Bronzes
C92700 C92700 / C927 / CDA927 CC480K – CuSn10-C
C93200 C93200 / C932 / CDA932 CC493K – CuSn7Zn4Pb7-C
C93600 C93600 / C936 / CDA936 –
C93700 C93700 / C937 / CDA937 CC495K – CuSn10Pb10-C
C93800 C93800 / C938 / CDA938 CC496K – CuSn7Pb15-C Lead Bronzes
C93900 C93900 / C939 / CDA939 – Lead Bronzes
C94100 C94100 / C941 / CDA941 CC497K – CuSn5Pb20-C
C95200 C95200 / C952 / CDA952 CC331G – CuAl10Fe2-C
C95400 C95400 / C954 / CDA954 – Aluminium Bronzes
C95500 C95500 / C955 / CDA955 CC333G – CuAl10Fe5Ni5-C
C95520 C95520 / C955 / CDA955 –
C95800 C95800 / C958 / CDA958 – Aluminium Bronzes
C95900 C95900 / C959 / CDA959 –

This table clearly displays the relevant information about ASTM B505 alloy standards, their closest viiplus alloy equivalents, the closest alloy compositions, and the types of alloys where applicable.

ASTM B271 standards, detailing their closest viiplus alloys, the approximate alloy compositions, and the types of alloys:

ASTM B271 Closest vii plus Alloys Closest Alloys Type of Alloy
C83600 CC491K – CuSn5ZnPb5-C
C84400 CC490K – CuSn3Zn8Pb5-C Tin Bronzes
C86200 CC764S – CuZn34Mn3Al2Fe1-C High Tensile Brass
C90300
C90500
C92200
C93200 CC493K – CuSn7ZnPb7
C93600 Lead Bronzes
C93700 CC495K – CuSn10Pb10-C
C93800 CC496K – CuSn7Pb15-C
C95200 CC331G – CuAl10Fe2-C Aluminium Bronzes
C95400
C95500 CC333G – CuAl10Fe5Ni5-C
C95800
C95900

This structured format clearly lists the relevant information about ASTM B271 alloy standards, their closest viiplus alloy designations, the closest alloy compositions, and the specified types of alloys where applicable.

Here’s the revised table for ASTM B22 standards, organized to clearly indicate the closest viiplus alloys, the closest alloy compositions, and the types of alloys:

ASTM B22 Closest viiplus Alloys Closest Alloys Type of Alloy
C86300 High Tensile Brass
C90500 Aluminium Bronzes
C91100 Tin Bronzes
C93700 Lead Bronzes

This table cleanly presents the relevant information about ASTM B22 alloy standards, noting the absence of direct viiplus alloy equivalents and highlighting the types of alloys associated with each standard.

C91100 ASTM B22
Tin Bronze
                       
Chemical Composition
  Element
  Cu(1,2) Pb Sn Zn Fe P(3) Ni(4) Al S Sb Si
(1) In determining Cu min., Cu may be calculated as Cu + Ni.(2) Cu + Sum of Named Elements 99.4% min.(3) For continuous castings                      
P shall be 1.5% max.(4) Ni value includes Co.                      
Min (%) 82.0   15.0                
Max (%) 85.0 0.25 17.0 0.25 0.25 1.0 0.50 0.005 0.05 0.20 0.005
                       
Mechanical Properties*
    Tensile YS-0.5%     Compression Deformation Proportional
  Temper Strength Ext Elongation Brinell Hardness, 3000 kg Limit Limit
Form Code (ksi) (ksi) (%) load (ksi) (ksi)
As Sand
Cast		 M01 35 Typ 25 Typ 2 Typ 135 Typ 18 Min for Standard 16 Typ
* Measured at room temperature, 68°F (20°C).
                       
Physical Properties
Melting Point – Liquidus°F 1742
Melting Point – Solidus°F 1505
Electrical Conductivity% IACS at 68°F 8
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 15000

Bronze casting is an ancient and versatile method used to create robust and intricate metal objects. The process involves melting bronze and pouring it into a mold where it solidifies into the desired shape. Here are some common methods used in bronze casting:

1. Sand Casting

This is one of the oldest and most commonly used methods of casting metals, including bronze. It involves creating a mold from sand that has been bonded with a clay or chemical binder. The molten bronze is poured into the sand mold, allowed to cool and harden, and then the sand is broken away to reveal the cast object. Sand casting is favored for its versatility, low cost, and ability to cast large parts.

2. Lost Wax Casting (Investment Casting)

Lost wax casting is a precision casting technique ideal for achieving detailed and complex designs. This method involves creating a wax model of the object to be cast, which is then encased in a ceramic shell. The wax is melted and drained away, leaving a hollow ceramic mold. Molten bronze is then poured into this mold. Once the metal has cooled and hardened, the ceramic shell is shattered, uncovering the bronze object. This method is known for its high accuracy and excellent surface finish.

3. Die Casting

Die casting for bronze is less common than for metals with lower melting points (such as aluminum and zinc), due to the high melting temperature of bronze which can damage the dies. However, it can be used for casting bronze when special high-temperature dies are available. In this process, molten bronze is forced under high pressure into steel molds, which are called dies. This method is highly efficient for producing high volumes of uniform parts with good dimensional accuracy.

4. Centrifugal Casting

Centrifugal casting is primarily used for cylindrical-shaped objects like pipes. The bronze is poured into a rotating mold, and the centrifugal force drives the metal against the mold walls as it solidifies. This method is advantageous for its ability to produce dense and clean castings with minimal impurities and inclusions.

5. Continuous Casting

This method is used for creating stock shapes, such as bars, rods, and tubes, which can then be further processed. Molten bronze is poured into a short mold at a controlled rate, and the solidified part continuously exits the mold as more molten metal is added. Continuous casting is noted for its efficiency and the ability to produce stock materials with uniform properties and fine grain structures.

Each bronze casting method has its advantages and is chosen based on the requirements of the final product, including the level of detail needed, the size and shape of the part, and the production volume.

GRAPHITE PLUGGED BRONZE wear plate

Cast Bronze Wear Plate

cast bronze cnc bearing

Flange Bronze Bearing

Grooved Cast Bronze Bushings

Standard Cast Bronze Bearings - With Groove

Cast bronze bearings and bushings are perfect for maintenance-free and heavy-duty applications. They are available in various forms, including cylindrical, spherical, and flange bearings. Specifically, Cast Bronze C93200 (SAE 660) is commonly used due to its excellent performance and reliability.

Cast bronze bushings with solid lubricant inserts are designed for heavy-duty applications, offering a self-lubricating solution that enhances performance in demanding environments. Here’s an overview:

Construction and Materials:

  • These bushings are created by casting high-strength bronze or brass alloys into a mold, resulting in a robust, uniform component.
  • They typically feature a high copper content and may include common alloys such as C93200, C93700, and C86300.

Self-Lubricating Properties:

  • Graphite or PTFE (polytetrafluoroethylene) inserts are integrated into the bushings, providing inherent lubrication.
  • This design obviates the need for external lubrication and ongoing maintenance.

Key Advantages:

  • Exceptional strength and durability suited for heavy loads.
  • Resistant to corrosion, making them ideal for use in marine environments.
  • Capable of operating at high temperatures, up to 250°C.
  • They exhibit a low coefficient of friction thanks to the solid lubricant inserts, which also decrease maintenance demands.

Applications:

  • These bushings are employed across various sectors such as automotive, aerospace, construction, and mining.
  • They are particularly effective in heavy machinery like excavators and cranes that endure high loads and severe conditions.

Available Forms:

  • Offered as cylindrical bushings, flanged bushings, thrust washers, and can be customized to specific shapes and dimensions.

Performance Characteristics:

  • Perfectly suited for high-load, low-speed conditions.
  • Resilient against chemicals and harsh substances.
  • Appropriate for both rotary and linear motion applications.

In conclusion, cast bronze bushings with solid lubricant inserts provide a robust, maintenance-free solution ideal for heavy-duty applications where conventional lubrication is either impractical or inadequate. Their ability to withstand tough conditions makes them a favored choice in many industrial applications.

Precision Bronze Bearings: Shaping the Future with Copper Alloys

In the world of industrial machinery, the quest for durability and efficiency is unending. Precision bronze bearings play a pivotal role in this pursuit, offering unmatched performance that has continued to evolve with advancements in technology and materials science. At the forefront of these developments, we are shaping the future of mechanical components with our expert use of copper and copper alloys.

The Backbone of Industrial Machinery: Copper and Copper Alloys

Copper and its alloys have been instrumental in advancing the performance of bearings due to their intrinsic properties. Known for their excellent thermal conductivity, resistance to corrosion, and antimicrobial properties, copper alloys are ideal for bearing applications. Among these, bronze stands out as a particularly robust material, combining copper with elements like tin, aluminum, and nickel to enhance its strength and wear resistance.

Precision Engineering: The Art of Machining Bronze Bearings

The process of creating precision bronze bearings involves sophisticated machining techniques that ensure high accuracy and consistency. Our state-of-the-art CNC (Computer Numerical Control) machines meticulously sculpt each bearing to meet precise specifications, achieving tolerances that are critical for high-performance applications.

Key Machining Techniques:

  • Turning and Milling: These processes shape the bronze material into the desired form with high precision, ensuring each bearing component fits perfectly within its mechanical system.
  • Drilling and Boring: Essential for creating the intricate internal features of bearings, these techniques are refined to produce smooth, precise holes and cavities within the bronze.
  • Finishing: Surface treatments and finishing processes enhance the bearing’s resistance to wear and corrosion, increasing the longevity and reliability of the component.

The Advantages of Precision Bronze Bearings

Precision bronze bearings are not just components; they are critical enablers of functionality in various applications. Here are the advantages that make them indispensable in modern machinery:

  • Load Handling: Bronze bearings distribute loads evenly across their surfaces, minimizing wear and extending the service life of both the bearings and the machinery they support.
  • Temperature Tolerance: Capable of performing under a wide range of temperatures, bronze bearings maintain their integrity and functionality even in extreme conditions.
  • Low Maintenance: The self-lubricating properties of some bronze alloys reduce the need for frequent maintenance, making them ideal for hard-to-access parts of machinery.
  • Versatility: Suitable for a plethora of applications, from electrical motors and automotive assemblies to heavy machinery and aerospace components.

Shaping the Future

As we continue to innovate in the field of precision bearings, our focus remains on enhancing the material properties and machining techniques to meet the evolving demands of industry. By integrating the latest advancements in materials science and engineering, we are not only contributing to the longevity and efficiency of machinery but are also paving the way for a more sustainable industrial future.

Precision bronze bearings, crafted with expertise and driven by innovation, are more than just components; they are the very foundation upon which modern industry operates. Through continuous improvement and dedication to quality, we are shaping a future where machinery is not only more efficient and reliable but also contributes to the wellbeing of our planet.

Chemical Requirements
Copper
Alloy
UNS No.		 Composition, % max, except as indicated
          Nickel            
Copper Tin Lead Zinc Iron Including Aluminum Manganese Antimony Sulfur Phosphorus Silicon
          Cobalt            
C86300 60.0–66.0 0.20 0.20 22.0–28.0 2.0–4.0 1.0A 5.0–7.5 2.5–5.0 … … … …
C90500 86.0–89.0 9.0–11.0 0.30 1.0–3.0 0.20 1.0A 0.005 … 0.20 0.05 0.05B 0.005
C91100 82.0–85.0 15.0–17.0 0.25 0.25 0.25 0.50A 0.005 … 0.20 0.05 1.0B 0.005
C91300 79.0–82.0 18.0–20.0 0.25 0.25 0.25 0.50A 0.005 … 0.20 0.05 1.0B 0.005
C93700 78.0–82.0 9.0–11.0 8.0–11.0 0.8 0.7C 0.50A 0.005 … 0.50 0.08 0.10B 0.005
A In determining copper minimum, copper may be calculated as copper plus nickel.
B For continuous castings, phosphorus shall be 1.5 % max.
C Iron shall be 0.35 % max. when used for steel-backed.

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Cast Bronze Solutions That Drive Innovation

Experience and Expertise in the Design of Cast Bearings and Engineered Bushings

Advancing Precision in Slide Bearing Technologies. Tackling Complex Challenges Through Innovation: We design and manufacture top-performing bearings and engineered products by harnessing custom engineering to develop solutions for the most demanding applications across various industries. Whether your needs lie in mining, medical devices, hydropower, or heavy industry, our extensive experience and deep knowledge enable us to create highly engineered solutions for your most challenging issues.

  • offers bearings that are maintenance free and provide increased reliability and longer application life, reducing operating cost in challenging applications across industries.

  • Self-Lubricating Bearings Specialists

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With innovative products, we are a dependable partner in enhancing the efficiency, intelligence, and sustainability of self-lubricating bearings. We produce high-precision components, bushings for powertrain and chassis applications, and various bronze and plain bearing solutions for numerous industrial uses.

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