Plain Cast Bronze Bearing

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.

Plain Cast Bronze Bearing

Explore Our Selection Of Plain Sleeve Bearing

plain bronze sleeve bushings

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Plain Cast Bronze Bearing – Custom Size

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Plain cast bronze bearings are manufactured from continuously cast C93200 bearing bronze, with the option to customize the alloy according to customer specifications.

A Sleeve bearing is also called plain bearing or journal bearing … Bushings, a bushing is always a bearing but not all bearings are bushings.

Aluminium Bronze C63000
C932 bearing bronze plain sleeve
flange groove bronze bearings
CuAl10NiFe4 Bronze slide plate groove design

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Apart from standard sizes, they can be custom-produced to specific dimensions and tolerances per client requirements. This includes creating bearings from custom drawings, specified dimensions, or reverse-engineered sample parts.

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Cast Bronze Bushings, Plain Styles

Understanding Plain Cast Bronze Sleeve Bearings: An Essential Guide

Plain cast bronze sleeve bearings, also known as bushings, are a versatile and widely used component in various industrial applications. They combine durability, load-carrying capacity, and anti-friction properties to deliver optimal performance. This article aims to provide a comprehensive overview of plain cast bronze sleeve bearings, including their composition, properties, applications, standards, and installation considerations.

What Are Plain Cast Bronze Sleeve Bearings?

A plain cast bronze sleeve bearing is a cylindrical component made from high-quality bearing bronze, typically C93200 alloy, that serves as a bearing surface between moving parts. These bearings help reduce friction between rotating shafts and stationary housings, enabling smooth motion and protecting the assembly from wear and tear.

Composition and Properties

Plain cast bronze bearings are often made from a specialized bronze alloy known as C93200, containing:

  • Copper (83%): Provides base material strength and wear resistance.
  • Tin (7%): Improves corrosion resistance and enhances the overall strength.
  • Lead (7%): Adds to the alloy’s anti-friction properties.
  • Zinc (3%): Improves the bearing’s castability and machinability.

Physical Properties:

  • Tensile Strength: 44,000 PSI
  • Yield Strength: 27,000 PSI
  • Elongation: 16% (in 2 inches)
  • Brinell Hardness: 72

These properties ensure that plain cast bronze bearings can withstand substantial loads while maintaining low friction and high durability.

Standard Specifications and Tolerances

Plain cast bronze bearings typically adhere to the following standards:

  • SAE 660: A widely recognized specification for bearing materials.
  • ASTM B144-52
  • Mil-B-16261(2), Grade VI
  • Fed: QQ-L-225, Comp. 12
  • QQ-B-691b(1), Comp. 12

Tolerances:

  • Inner Diameter:

    • Up to 3 inches: ±.0010″
    • Over 3 inches: ±.0015″

  • Outer Diameter:

    • Up to 3 inches: +.002″ to .003″
    • Over 3 inches: +.003″ to .005″

  • Length: ±.005″

  • Concentricity: .003″ T.I.R. (Total Indicator Reading)

Applications

Plain cast bronze bearings are valued for their high load-carrying capacity and excellent anti-friction properties, making them suitable for various industries:

  • Automotive: Engine components, suspension systems, and transmissions.
  • Manufacturing: Conveyors, pumps, and heavy machinery.
  • Aerospace: Aircraft control systems and landing gear.
  • Marine: Propulsion systems and rudder assemblies.
  • Agriculture: Equipment like tractors and harvesters.

Installation Considerations

When installing plain cast bronze bearings, the following factors should be considered to ensure optimal performance:

  1. Press Fit: Bearings with relatively thick walls and carrying moderate loads in one direction can tolerate a looser press fit than usual.

  2. Clearance: For applications with exceptionally high speeds or heavy loads, greater clearance than normal should be allowed to prevent overheating and premature wear.

Conclusion

Plain cast bronze sleeve bearings are indispensable for a wide range of mechanical systems due to their versatility, durability, and reliable performance. Understanding their composition, applications, and proper installation practices will help engineers and procurement personnel make informed decisions to ensure the longevity and efficiency of these critical components. For further information or specific technical support, reach out to your trusted supplier or technical expert.

Different Types of Bronze Bushings and Their Applications

Bearing Types (Styles)

  1. Plain:
    A plain bronze bushing is a simple cylindrical bearing without special grooves or flanges.

  2. Grooved:
    Grooved bronze bushings feature surface grooves that hold oil or grease, making them suitable for applications requiring extra lubrication.

  3. Flanged:
    Flanged bronze bushings have one or two flanges on the sides to provide additional support and positioning.

  4. Thrust Washer:
    A thrust washer bronze bearing is designed to handle axial loads and is commonly used in applications that require axial positioning.

  5. Oversized Bearings:
    These refer to bronze bearings that fall outside the standard size range and are custom-made.

Applications

  1. Heavy Duty Equipment:
    Bronze bushings in heavy-duty machinery or equipment like construction and mining machines.

  2. Machinery Repair:
    Used as replacement parts during machinery repair to restore equipment performance.

  3. Hydraulic:
    In hydraulic systems, bronze bushings reduce friction and wear in hydraulic cylinders and other components.

  4. Power Transmission:
    In power transmission systems, bronze bushings improve transmission efficiency in gearboxes, drive shafts, and similar components.

  5. More Applications:
    Bronze bushings also have various uses in automotive, marine, and industrial equipment.

Each type of bronze bushing is designed with specific characteristics to meet varying industrial requirements. If you need more detailed information or have questions about a particular style, let me know, and I’ll provide more specific assistance.

 
 
 

Bronze Alloys

Bearing Bronze Alloys:

  • Widely used bearing alloys known for excellent anti-friction properties, sufficient strength and hardness, suitable ductility, and exceptional machinability.
  • Ideal for general-purpose bearings and bushings, offering high resistance to impact, wear, and corrosion.
  • Common alloys include C93200, C93600, and C93700.

Aluminum Bronze Alloys:

  • Noted for their superior strength and corrosion resistance compared to other bronze alloys.
  • Common alloys include C95400, C95900, C63000, C63020, C95510, C95500, and C61400.

Gear Bronze Alloys:

  • Primarily used for non-ferrous gears due to their “wear-resistant” properties, capable of handling high sliding speeds when paired with steel worm gears.
  • Common alloys include C90300, C90500, C90700, and C91100.

Manganese Bronze Alloys:

  • Can operate at extremely high loads and speeds.
  • Alongside exceptional mechanical properties, these alloys also offer good corrosion resistance.
  • Common alloys include C67300, C86300, C86400, and C86500.

Phosphor Bronze Alloys:

  • Alloys containing copper, tin, and phosphorus, where the addition of tin enhances corrosion resistance and strength.
  • Common alloys include C51000 and C54400.

Silicon Bronze Alloys:

  • Provide additional strength and excellent bearing and load-carrying performance by combining silicon’s self-lubricating properties.
  • Common alloy: C64200.

Toughmet 3 Alloy:

  • A high-strength, high-hardness copper-tin-nickel alloy with a low coefficient of friction.
  • Common alloys include C72900 Toughmet 3 and C96900 Toughmet 3 CX.

Brass Alloys

Free Cutting Brass:

  • Also known as machinable brass, alloy C360 sets the standard for all other metals in machinability.
  • Ideal for high-speed machining.

Naval Brass:

  • Known for good strength and stiffness, as well as resistance to wear, fatigue, and stress corrosion cracking.
  • The addition of tin improves C46400’s corrosion resistance in seawater and other mild corrosive environments.

Superior Wear Resistance & Strength. Custom Aluminum Bronze Bearings

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Due to their high load-carrying capacity and anti-friction properties, plain cast bronze bearings are widely used as general-purpose bearings.

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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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