self-lubricating bushes composite bearing material developed specifically to operate with marginal lubrication and consists of three bonded layers: a steel backing strip and a sintered porous bronze matrix, impregnated and overlaid with a pigmented acetal copolymer bearing material
Centrifugal Castings Bearing

Centrifugal Castings Bearing

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Centrifugal Castings Bearing, High-Performance Nickel-Aluminium Bronze Bearings: CuAl10Ni5Fe4 Centrifugal Cast Bearing Bushings for Oil and Gas Applications!

Centrifugal Cast Bearings for Oil/Gas Applications, made from nickel-aluminium bronze, offer an advantageous alternative to beryllium copper bearings. These bearings come at a more affordable price point and eliminate the need for the stringent industrial hygiene practices associated with beryllium copper.

Centrifugal Cast Bearing Technical Data Sheet, nickel aluminium bronze bearing

Nickel-Aluminium Bronze bearings are favored across a broad range of uses for their outstanding mechanical strengths, corrosion resistance, and long-lasting durability. Here are the key reasons for their preference:

  • Corrosion Resistance: Nickel-Aluminium Bronze is highly resistant to corrosion, which makes it perfectly suited for use in marine settings and other challenging environments.
  • Mechanical Strengths: These bearings feature exceptional mechanical strengths, including high levels of strength, toughness, and resistance to wear. This ensures they perform reliably under heavy loads and in abrasive conditions.
  • Versatile Applications: They are widely utilized in sectors such as aerospace, marine, and general industry, finding applications in landing gear bushings, aircraft components, and marine fittings. This is due to their robust combination of mechanical strength and corrosion resistance.

Nickel-Aluminium Bronze bearings are highly regarded for their dependable performance and extended service life, especially in environments where conditions are tough, cementing their status as a top choice in various fields.

Centrifugal Cast Bearing Composition:

Aluminium (Al): 10.5%
Iron (Fe): 4.8%
Nickel (Ni): 5.0%
Manganese (Mn): 1.5%
Others: max. 0.5%
Copper (Cu): remainder
This bronze alloy is increasingly favored for components requiring enhanced mechanical properties at higher temperatures and corrosion resistance. It is ideally suited for a variety of applications, including but not limited to gear assemblies, engine spacer bearings, and other analogous uses. The material’s growing popularity is evident in sectors demanding improved performance, such as in the manufacture of landing gear bearings and bushings, bending dies (including shoes and mandrels) for the tube bending industry, gear wheels, and wear/guide plates.

Specification: Cast bronze bearings.

Nickel-aluminium bronze (NAB) alloys stand out for their exceptional attributes, such as high tensile strength, outstanding corrosion resistance, and enhanced wear resistance. These qualities render them perfectly suited for a range of bearing applications. The durability and resilience of these alloys against severe conditions make them a preferred choice in challenging sectors like aerospace, marine, offshore oil and gas, and the petrochemical industry.

Centrifugal Castings and Their Role in Bearing Manufacturing

The production of nickel-aluminium bronze bearings utilizes the advanced technique of centrifugal casting. This process entails the pouring of molten metal into a spinning mold, leveraging centrifugal force to press the metal against the mold’s sides. This action results in a casting that is both dense and uniform, with fewer impurities and flaws. Such a method is especially advantageous for bearings, ensuring components are made with superior mechanical properties and dependability.

Nickel-aluminium bronze bearings find widespread use across various industries. In aerospace, for instance, they serve a critical role in the landing gear bearings of both commercial, chosen for their excellent bearing capacity compared to steel, their ability to resist corrosion from salt—particularly important during winter runway de-icing—and their high mechanical strength. In the marine industry, these alloys are employed in bearing applications on oil rigs, valued for their self-lubricating features, and resistance to wear and corrosion.

Composition and Properties of the Alloy

The nickel-aluminium bronze alloy’s composition typically includes elements such as aluminum, nickel, iron, and manganese within a copper base, contributing to its high strength, corrosion resistance, and wear resistance. The specific characteristics of the alloy can vary based on its exact composition and the heat treatment it undergoes. For instance, the heat-treated nickel-aluminium bronze C95510 (AMS 4880) is noted for its remarkable strength, yield, compressive strength, and elongation, making it suitable for heavy-duty and high-impact applications.

Diverse Applications Beyond Bearings

SPLIT THE PART INTO TWO EQUAL HALVES BRONZE BEARING

Nickel-Aluminium Bronze Bearings

The use of nickel-aluminium bronze extends beyond bearings to encompass a variety of applications where its robust properties are beneficial. These applications include marine propellers and valves, where resistance to seawater corrosion is crucial, and in aerospace, for components beyond landing gear bearings that require high strength and corrosion resistance. The offshore oil and gas sector also leverages these alloys in equipment such as riser pull-in systems, mooring and turret systems, and drilling machinery, where durability and marine environment resistance are critical.

Nickel-aluminium bronze (NAB) alloys, such as those specified under AMS 4881 (UNS C95520), are highly regarded for their exceptional mechanical and physical properties, making them suitable for a wide range of applications, including bearings in demanding environments. The AMS 4881 specification covers a nickel-aluminium bronze alloy that is heat-treated to enhance its mechanical properties, surpassing those of many other copper-based alloys.

Composition and Mechanical Characteristics

The AMS 4881 specification for the nickel-aluminium bronze alloy, known as UNS C95520, stands out due to its specialized composition. This formula incorporates copper as the foundational element, enriched with notable quantities of aluminum, nickel, iron, and manganese. The alloy’s design aims to offer an optimal balance of high strength-to-weight ratio, superior wear and galling resistance, exceptional corrosion resistance, and significant mechanical robustness. The AMS 4881 standard details the chemical makeup as follows:

  • Copper (Cu): Minimum of 74.50%
  • Aluminum (Al): 10.50-11.50%
  • Nickel (Ni), inclusive of Cobalt (Co): 4.20-6.00%
  • Iron (Fe): 4.00-5.50%
  • Manganese (Mn): Maximum of 1.50%

Enhanced mechanical properties are achieved through a heat treatment process tailored to AMS 4881 alloys. For example, the C95520 variant demonstrates a tensile strength minimum of 125 ksi (860 MPa), a yield strength (0.2% offset) minimum of 90 ksi (621 MPa), and an elongation minimum of 2% in 4D. The Brinell hardness, under a 3000 kg load, is stipulated to be at least 262 BHN for cast pieces smaller than 2.00 inches, showcasing the alloy’s durability and resistance to wear.

Practical Applications

The AMS 4881 nickel-aluminium bronze alloy is highly sought after across diverse sectors for its robust attributes. Prominent uses include:

  • Aerospace: In applications such as landing gear and bearings, the alloy’s superior bearing capacity relative to steel, its corrosion resistance against saline conditions (vital for de-icing runways in winter), and its high mechanical strength are invaluable.
  • Marine: For components like propeller hubs, shafts, sleeves, and wear rings, where the material’s seawater corrosion and wear resistance are advantageous.
  • Industrial: In the manufacturing of machine tool parts, piston guides, wear rings, worm wheels, and other elements that demand elevated strength, wear resistance, and longevity.

Therefore, the AMS 4881 specification addresses the needs of a broad array of challenging applications, especially in scenarios where materials face extreme conditions, such as high pressures, corrosive environments, and extensive wear and tear. The blend of high strength, outstanding corrosion and wear resistance, and effective bearing properties against steel positions the AMS 4881 nickel-aluminium bronze alloys, including UNS C95520, as a preferred choice in aerospace, marine, and various industrial contexts.

Chemical Composition of CuSn12Ni2

This table outlines a typical chemical composition for the CuSn12Ni2 alloy. Note that the actual percentages may slightly vary based on the manufacturer’s specifications and the application requirements.

Element Minimum Percentage Maximum Percentage
Copper (Cu) 85.0% 88.0%
Tin (Sn) 10.0% 12.0%
Nickel (Ni) 1.0% 3.0%
Lead (Pb) – 0.10%
Zinc (Zn) – 0.50%
Iron (Fe) – 0.20%
Phosphorus (P) – 0.03%
Sulfur (S) – 0.08%
Other elements – 0.50%

Material Designation and Equivalent Grades of CuSn12Ni2

The following are designations and equivalent grades for various casting methods of the CuSn12Ni2 alloy according to DIN EN 1982 and DIN 1705 standards.

DIN EN 1982 Casting Method DIN 1705 Abbreviated Designation Number
CuSn12Ni2-C-GS Sand Casting G-CuSn12Ni CC484K-GS 2.1060.01
CuSn12Ni2-C-GZ Centrifugal GZ-CuSn12Ni CC484K-GZ 2.1060.03
CuSn12Ni2-C-GC Continuous GC-CuSn12Ni CC484K-GC 2.1060.04

These designations provide specific details on the types of casting processes applicable for the CuSn12Ni2 alloy, reflecting its versatility and adaptability in various industrial applications.

4

Centrifugal Castings Bearing, High-Performance Nickel-Aluminium Bronze Bearings: CuAl10Ni5Fe4 Centrifugal Cast Bearing Bushings for Oil and Gas Applications!

Centrifugal Cast Bearings for Oil/Gas Applications, made from nickel-aluminium bronze, offer an advantageous alternative to beryllium copper bearings. These bearings come at a more affordable price point and eliminate the need for the stringent industrial hygiene practices associated with beryllium copper.

Centrifugal Cast Bearing Technical Data Sheet, nickel aluminium bronze bearing

Nickel-Aluminium Bronze bearings are favored across a broad range of uses for their outstanding mechanical strengths, corrosion resistance, and long-lasting durability. Here are the key reasons for their preference:

  • Corrosion Resistance: Nickel-Aluminium Bronze is highly resistant to corrosion, which makes it perfectly suited for use in marine settings and other challenging environments.
  • Mechanical Strengths: These bearings feature exceptional mechanical strengths, including high levels of strength, toughness, and resistance to wear. This ensures they perform reliably under heavy loads and in abrasive conditions.
  • Versatile Applications: They are widely utilized in sectors such as aerospace, marine, and general industry, finding applications in landing gear bushings, aircraft components, and marine fittings. This is due to their robust combination of mechanical strength and corrosion resistance.

Nickel-Aluminium Bronze bearings are highly regarded for their dependable performance and extended service life, especially in environments where conditions are tough, cementing their status as a top choice in various fields.

Centrifugal Cast Bearing Composition:

Aluminium (Al): 10.5%
Iron (Fe): 4.8%
Nickel (Ni): 5.0%
Manganese (Mn): 1.5%
Others: max. 0.5%
Copper (Cu): remainder
This bronze alloy is increasingly favored for components requiring enhanced mechanical properties at higher temperatures and corrosion resistance. It is ideally suited for a variety of applications, including but not limited to gear assemblies, engine spacer bearings, and other analogous uses. The material’s growing popularity is evident in sectors demanding improved performance, such as in the manufacture of landing gear bearings and bushings, bending dies (including shoes and mandrels) for the tube bending industry, gear wheels, and wear/guide plates.

Specification: Cast bronze bearings.

Nickel-aluminium bronze (NAB) alloys stand out for their exceptional attributes, such as high tensile strength, outstanding corrosion resistance, and enhanced wear resistance. These qualities render them perfectly suited for a range of bearing applications. The durability and resilience of these alloys against severe conditions make them a preferred choice in challenging sectors like aerospace, marine, offshore oil and gas, and the petrochemical industry.

Centrifugal Castings and Their Role in Bearing Manufacturing

The production of nickel-aluminium bronze bearings utilizes the advanced technique of centrifugal casting. This process entails the pouring of molten metal into a spinning mold, leveraging centrifugal force to press the metal against the mold’s sides. This action results in a casting that is both dense and uniform, with fewer impurities and flaws. Such a method is especially advantageous for bearings, ensuring components are made with superior mechanical properties and dependability.

Nickel-aluminium bronze bearings find widespread use across various industries. In aerospace, for instance, they serve a critical role in the landing gear bearings of both commercial, chosen for their excellent bearing capacity compared to steel, their ability to resist corrosion from salt—particularly important during winter runway de-icing—and their high mechanical strength. In the marine industry, these alloys are employed in bearing applications on oil rigs, valued for their self-lubricating features, and resistance to wear and corrosion.

Composition and Properties of the Alloy

The nickel-aluminium bronze alloy’s composition typically includes elements such as aluminum, nickel, iron, and manganese within a copper base, contributing to its high strength, corrosion resistance, and wear resistance. The specific characteristics of the alloy can vary based on its exact composition and the heat treatment it undergoes. For instance, the heat-treated nickel-aluminium bronze C95510 (AMS 4880) is noted for its remarkable strength, yield, compressive strength, and elongation, making it suitable for heavy-duty and high-impact applications.

Diverse Applications Beyond Bearings

SPLIT THE PART INTO TWO EQUAL HALVES BRONZE BEARING

Nickel-Aluminium Bronze Bearings

The use of nickel-aluminium bronze extends beyond bearings to encompass a variety of applications where its robust properties are beneficial. These applications include marine propellers and valves, where resistance to seawater corrosion is crucial, and in aerospace, for components beyond landing gear bearings that require high strength and corrosion resistance. The offshore oil and gas sector also leverages these alloys in equipment such as riser pull-in systems, mooring and turret systems, and drilling machinery, where durability and marine environment resistance are critical.

Nickel-aluminium bronze (NAB) alloys, such as those specified under AMS 4881 (UNS C95520), are highly regarded for their exceptional mechanical and physical properties, making them suitable for a wide range of applications, including bearings in demanding environments. The AMS 4881 specification covers a nickel-aluminium bronze alloy that is heat-treated to enhance its mechanical properties, surpassing those of many other copper-based alloys.

Composition and Mechanical Characteristics

The AMS 4881 specification for the nickel-aluminium bronze alloy, known as UNS C95520, stands out due to its specialized composition. This formula incorporates copper as the foundational element, enriched with notable quantities of aluminum, nickel, iron, and manganese. The alloy’s design aims to offer an optimal balance of high strength-to-weight ratio, superior wear and galling resistance, exceptional corrosion resistance, and significant mechanical robustness. The AMS 4881 standard details the chemical makeup as follows:

  • Copper (Cu): Minimum of 74.50%
  • Aluminum (Al): 10.50-11.50%
  • Nickel (Ni), inclusive of Cobalt (Co): 4.20-6.00%
  • Iron (Fe): 4.00-5.50%
  • Manganese (Mn): Maximum of 1.50%

Enhanced mechanical properties are achieved through a heat treatment process tailored to AMS 4881 alloys. For example, the C95520 variant demonstrates a tensile strength minimum of 125 ksi (860 MPa), a yield strength (0.2% offset) minimum of 90 ksi (621 MPa), and an elongation minimum of 2% in 4D. The Brinell hardness, under a 3000 kg load, is stipulated to be at least 262 BHN for cast pieces smaller than 2.00 inches, showcasing the alloy’s durability and resistance to wear.

Practical Applications

The AMS 4881 nickel-aluminium bronze alloy is highly sought after across diverse sectors for its robust attributes. Prominent uses include:

  • Aerospace: In applications such as landing gear and bearings, the alloy’s superior bearing capacity relative to steel, its corrosion resistance against saline conditions (vital for de-icing runways in winter), and its high mechanical strength are invaluable.
  • Marine: For components like propeller hubs, shafts, sleeves, and wear rings, where the material’s seawater corrosion and wear resistance are advantageous.
  • Industrial: In the manufacturing of machine tool parts, piston guides, wear rings, worm wheels, and other elements that demand elevated strength, wear resistance, and longevity.

Therefore, the AMS 4881 specification addresses the needs of a broad array of challenging applications, especially in scenarios where materials face extreme conditions, such as high pressures, corrosive environments, and extensive wear and tear. The blend of high strength, outstanding corrosion and wear resistance, and effective bearing properties against steel positions the AMS 4881 nickel-aluminium bronze alloys, including UNS C95520, as a preferred choice in aerospace, marine, and various industrial contexts.

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