Understanding Pivot Bearings and SEA660 Material

Pivot bush bearing supplier， precision-engineered products，C93200 (SAE660) Bearing Bronze / C932 Bearing Bronze

Pivot bearings play a crucial role in various mechanical systems, offering rotational or oscillatory motion. They are integral components in machinery where precision and durability are paramount. In this article, we’ll delve into the specifics of pivot bearings, focusing on a popular material used for pivot shaft bushings – SEA660.

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bearing bronze，bronze alloy

SAE660 is a lead-containing continuously cast copper-based alloy suitable for a variety of applications using proper lubrication at moderate loads. This alloy has good sliding and dry running properties and is not easy to dezincify. It also has reasonable salt water resistance, making it suitable for pump and valve components.

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What are Pivot Bearings?

Pivot bearings are types of bearings used to enable rotational or hinge-like movement. They are found in numerous applications, from small machinery to large industrial equipment. The purpose of a pivot bearing is to allow controlled and smooth movement around an axis. This movement can be either rotational (circular) or oscillatory (back and forth).

Key Characteristics of Pivot Bearings

  1. Low Friction: Pivot bearings are designed to minimize friction between moving parts.
  2. High Load Capacity: They can support significant loads, making them ideal for heavy-duty applications.
  3. Durability: Pivot bearings are built to withstand wear and tear, ensuring a long service life.
  4. Precision Movement: They provide accurate and stable motion.

SEA660 Material for Pivot Shaft Bushings

SEA660, commonly known as SAE 660, is a type of bronze alloy. This material is particularly favored for manufacturing pivot shaft bushings due to its outstanding properties.

Composition of SEA660
  • Copper: The primary component, offering excellent thermal conductivity.
  • Tin: Increases mechanical strength and corrosion resistance.
  • Lead: Improves machinability and wear resistance.
  • Zinc: Adds to the alloy’s strength.
Advantages of SEA660 in Pivot BearingsPivot beaings bronze bushing cast bearing materials ZCuPb10Sn10 ZCuPb17Sn4Zn4 Pivot bush
  1. Wear Resistance: SEA660 exhibits superior wear resistance, which is crucial for pivot bearings that undergo continuous motion.
  2. Low Coefficient of Friction: The material reduces friction between the shaft and the bearing, enhancing performance and longevity.
  3. Corrosion Resistance: Resistant to corrosion, SEA660 bushings are suitable for use in harsh environments.
  4. Conformability: The material can conform to slight misalignments in the shaft, reducing stress on the bearing.
  5. Good Thermal Conductivity: Helps in dissipating heat generated during operation, preventing overheating.

Applications of SEA660 Pivot Bearings

  • Industrial Machinery: In heavy machinery where robust and reliable bearings are necessary.
  • Automotive: In suspension systems and steering components.
  • Aerospace: For control mechanisms in aircraft.
  • Marine: In shipbuilding, for components exposed to corrosive marine environments.

Pivot bush

Pivot bearings, especially those made with SEA660, are vital components in various mechanical systems. Their ability to withstand high loads, resist wear and corrosion, and provide precise movement makes them indispensable in applications where reliability and durability are critical. The use of SEA660 material in pivot shaft bushings represents a blend of traditional materials engineering with modern demands for performance and longevity.

Pivot shaft bushings made from SEA660 material are typically made from continuous cast bronze, specifically SAE 660 bronze, also known as C932 bronze. This material is a type of high-quality bronze alloy known for its excellent bearing properties.

Here are some key points about SEA660 pivot shaft bushings:

  1. Material: SEA660 pivot shaft bushings are commonly made from C93200 bronze, a leaded tin bronze alloy known for its self-lubricating properties and wear resistance.
  2. Characteristics: SEA660 bronze has excellent machinability, corrosion resistance, and the ability to handle heavy loads, making it suitable for applications where low friction and durability are essential.
  3. Usage: These bushings are often used in machinery and equipment where a rotating or pivoting shaft requires support and smooth movement, such as in industrial equipment and automotive applications.
  4. Availability: SEA660 bronze bushings are readily available in various sizes and configurations from manufacturers and suppliers specializing in bronze and bearing materials.

When choosing pivot shaft bushings, it’s essential to consider the specific application requirements and consult with suppliers for the most suitable size and configuration of SEA660 bushings.

C93200 Bearing Bronze / C932 Bronze

Sources:

SAE 660 bronze, also known as C93200 bronze, is a high-leaded tin bronze alloy commonly used in the manufacturing of bushings. These bushings are renowned for their durability and performance in a variety of industrial applications. This article will explore the properties, applications, and advantages of SAE 660 bronze bushings.

Composition and Properties

The SAE 660 bronze alloy consists of approximately 83% copper, 7% tin, 7% lead, and 3% zinc. This combination imparts several key properties:

  1. High Strength and Hardness: Offers excellent load-bearing capabilities.
  2. Excellent Machinability: The presence of lead makes it easier to machine.
  3. Good Conformability: Can accommodate slight misalignments in shafts.
  4. High Wear Resistance: Prolongs the lifespan of both the bushing and the mating components.
  5. Corrosion Resistance: Suitable for use in corrosive environments.

Advantages of SAE 660 Bronze Bushings

  1. Low Maintenance: Their durability and resistance to wear and corrosion reduce the need for frequent replacements or maintenance.
  2. Cost-Effectiveness: Despite their high performance, these bushings are relatively affordable.
  3. Versatility: Applicable in a wide range of operating temperatures and conditions.
  4. Reduced Friction: The lead content lowers the coefficient of friction, minimizing wear and tear.
  5. Good Thermal Conductivity: Helps in efficient heat dissipation.

Applications

SAE 660 bronze bushings are used in various applications across multiple industries:

  1. General Machinery: In applications where heavy loads and moderate speeds are involved.
  2. Automotive: For components like kingpin bushings and brake calipers.
  3. Agricultural Equipment: In tractors and harvesters where sturdy bushings are required.
  4. Marine Applications: Especially in parts exposed to salty water and air.
  5. Aerospace: For non-critical components subjected to wear and requiring good corrosion resistance.

Manufacturing and Customization

These bushings can be manufactured to specific tolerances and sizes, catering to the unique requirements of different machinery. The ability to customize dimensions and shapes makes them highly adaptable for specialized applications.

Environmental Considerations

While SAE 660 bronze bushings are efficient and durable, the lead content raises environmental and health concerns. It’s essential to handle and dispose of these components responsibly.

Conclusion

SAE 660 bronze bushings stand out for their strength, machinability, and wear resistance. They are a cost-effective solution for a wide range of industrial applications. While they offer numerous advantages, it is crucial to consider environmental factors associated with their use. As technology advances, alternatives to leaded bronzes are being explored to maintain performance while reducing environmental impact.