C93700 Bronze Bushings

Unveiling Superior Performance: C93700 Bronze Bushings

  • Enhanced Durability for Seamless Operations
    Crafted from premium C93700 bronze, these bushings promise unparalleled durability, ensuring your machinery operates smoothly without the hassle of frequent replacements. Engineered to withstand extreme conditions, these bushings excel in high-load applications, making them indispensable for heavy-duty industrial machinery. Say goodbye to downtime caused by worn-out components and embrace uninterrupted productivity with these robust bronze bushings.
  • Precision Engineering for Optimal Efficiency
  • Trustworthy Solution for Long-Term Reliability
    Count on the reliability of C93700 bronze bushings to keep your operations running smoothly for the long haul.


C93700 Bronze Bushings

C93700 Bronze Bushings come in a variety of types to suit different needs, including Sleeve, Flanged, and Thrust bushings. These versatile components find application across a wide spectrum, serving as bearings, wear plates, impellers, pump parts, marine equipment, valves, rolling mill bearings, hydraulic press liners, thrust washers, and trunnion bearings.

Sleeve Bushings are tailored for plain bearing applications, particularly suitable for low-load, low-speed operations. Available in diverse sizes and materials, including C93700 Bronze, they cater to specific requirements.

Flanged Bushings, on the other hand, are utilized in scenarios where securing the bushing with a flange is necessary. Commonly employed in hydraulic systems to ensure a sealed interface between the bushing and its surroundings, these bushings are offered in various sizes and materials, including C93700 Bronze.

Thrust Bushings are engineered to withstand thrust loads, finding predominant use in high-pressure environments like hydraulic systems. Available in different sizes and materials, including C93700 Bronze, they effectively seal the interface between the bushing and adjacent components.

C93700 Bronze Bushings are esteemed for their exceptional machinability, anti-friction properties, and resistance to corrosion from seawater and brine. They are well-suited for high-speed, light-duty applications and exhibit resilience to mild acids commonly encountered in mining water.

C93700 SAE 64 Bearing Bronze / C937 Bronze

C93700, also known as High-Leaded Tin Bronze or CDA 937, is a bronze alloy with superior quality and performance, meeting standards such as SAE 64 83-10-10 and ASTM B505.

Here are the typical properties of C93700 (for reference, not for specification purposes):

Copper: 78.00 – 82.00%
Tin: 9.00 – 11.00%
Lead: 8.00 – 11.00%
Physical properties of Continuous Cast C93700 include:

Tensile Strength: Minimum 35,000 PSI
Yield Strength: Minimum 20,000 PSI
Elongation: Minimum 6%
Brinell Hardness (500 kg load): Typically 60
Machinability Rating: 80
Minimum Operating Temperature: -450°F
Maximum Operating Temperature: 500°F
Compared to C93200, C93700 contains higher tin and lead content, making it suitable for bearings operating at higher speeds and loads. It offers enhanced corrosion and oxidation resistance, along with good anti-frictional properties, excellent load-carrying ability, and superior machinability. C93700 can be effectively used in applications where lubrication may be limited or intermittent.

Properties and Characteristics of C93700 Bronze

In terms of mechanical properties, C93700 Bronze exhibits a compressive strength of 210 MPa, elastic modulus of 99 GPa, elongation at break of 20%, fatigue strength of 90 MPa, impact strength of 15 J, shear modulus of 37 GPa, tensile strength of 240 MPa, and yield strength of 130 MPa. It also demonstrates thermal properties such as a latent heat of fusion of 170 J/g, maximum temperature of 140°C, and a specific heat capacity of 350 J/kg-K.

The alloy’s electrical conductivity is approximately 10% IACS at 68°F and 0.059 MegaSiemens/cm at 20°C. Additionally, it is recognized for its exceptional machinability, good anti-friction properties, and resistance to corrosion from seawater and brine. These qualities make it suitable for high-speed, light-duty applications and capable of withstanding mild acids, such as those found in mine water.

Manufacturing Process of C93700 Bronze Bushings

The manufacturing process of C93700 Bronze Bushings typically involves several key steps:

  1. Material Preparation: C93700 Bronze is prepared by melting a mixture of approximately 80% copper, 10% tin, and 10% lead. This alloy is melted in a furnace and then poured into a mold to create a bushing blank.
  2. Mold Design: The design of the mold for the bushing blank is tailored to the specific application and required dimensions. The mold can be constructed from various materials like metal, ceramic, or graphite, and can be adapted for different casting methods such as sand casting, investment casting, or die casting.
  3. Casting: The molten C93700 Bronze is poured into the mold, where it is allowed to cool and solidify. Once solidified, the resulting bushing blank is removed from the mold.
  4. Machining: The bushing blank undergoes machining processes to achieve the necessary dimensions and specifications. This involves operations like turning, drilling, milling, and grinding to create the inner and outer diameters, length, and any other required features.
  5. Finishing: Following machining, the bushing may undergo additional finishing operations like heat treatment, surface treatment, or coating to enhance its properties and performance.
  6. Inspection and Quality Control: The finished bushing is thoroughly inspected to ensure it meets the required specifications and quality standards. This involves dimensional checks, material analysis, and performance testing.
  7. Delivery: Finally, the C93700 Bronze Bushings are packaged and shipped to the customer.

Applications and Uses of C93700 Bronze Bushings

C93700 Bronze Bushings find widespread use across various applications thanks to their unique blend of properties. These bushings offer high load capacity, excellent wear resistance, favorable frictional characteristics, and corrosion resistance. They excel in high-speed and heavy-duty machinery, automotive systems, maritime equipment, aerospace components, hydraulic systems, and general engineering applications.

In industrial machinery, C93700 Bronze Bushings shine due to their ability to withstand heavy loads and resist wear, making them suitable for use in manufacturing, construction, and agriculture equipment. Automotive applications benefit from the alloy’s low friction and high wear resistance, particularly in gearbox components and suspension systems. The corrosion resistance of C93700 Bronze makes it valuable in maritime equipment, especially in ship components exposed to seawater.

Aerospace applications leverage C93700 Bronze Bushings in components subjected to significant stress and wear. Hydraulic systems benefit from the alloy’s smooth operation and reduced need for frequent maintenance or lubrication, making it ideal for pumps and valves. In general engineering, these bushings are trusted in various equipment and tools requiring durable and reliable components.

Moreover, C93700 Bronze Bushings serve in slide guides for steel mills, large bearings for ships, and marine applications due to their resistance to saltwater corrosion. They’re also preferred in bushings for high-speed and heavy-pressure environments due to their friction, wear properties, and overall durability. Their excellent machinability ensures ease of fabrication with most manufacturing processes and tools, facilitating timely delivery and custom solutions to meet specific needs.

Advantages and Limitations of C93700 Bronze Bushings

Advantages of C93700 Bronze Bushings:

  1. High Load Capacity: C93700 bronze boasts impressive load-bearing capabilities, making it ideal for heavy-duty machinery and automotive applications.
  2. Excellent Wear Resistance: This bronze alloy exhibits outstanding resistance to wear and tear, ensuring prolonged service life even under constant use.
  3. Good Frictional Characteristics: Its inherent properties reduce friction coefficients, ensuring smooth operation and minimizing the need for frequent maintenance or lubrication.
  4. Corrosion Resistance: C93700 bronze resists various environmental factors, making it particularly valuable in marine applications exposed to saline or humid conditions.
  5. Thermal Conductivity: Efficient heat dissipation prevents overheating in machinery parts, ensuring component longevity.
  6. Malleability: C93700 bronze’s malleability facilitates easy fabrication with most manufacturing processes and tools.
  7. Strength: The alloy exhibits good strength, rendering it suitable for heavy-duty applications.
  8. Easy Machinability: Excellent machinability allows for precise manufacturing of components.
  9. Excellent Antifriction Qualities: Natural lubricity and the ability to embed dirt particles protect mating parts, reducing wear.
  10. Corrosion and Degradation Resistance: C93700 bronze withstands corrosion and degradation, especially in acidic environments, crucial for critical applications where failure isn’t an option.

Limitations of C93700 Bronze Bushings:

  1. Toxicity: Lead content, enhancing machinability and bearing properties, necessitates careful handling and disposal to minimize environmental impact.
  2. Corrosion in Highly Corrosive Environments: While offering good corrosion resistance, additional protection may be required for highly corrosive environments.
  3. Load Requirements: Despite its ability to handle high loads, it’s vital to confirm load expectations align with the alloy’s specifications.
  4. Maintenance: Regular checks are necessary to ensure bushings remain in good condition and extend their service life.
  5. Lubrication: Though possessing good frictional properties, certain applications may benefit from periodic lubrication.
  6. Size Limitations: While adaptable to various sizes, producing extremely large components may pose challenges.
  7. Cost: The alloy’s higher expense compared to other materials may impact overall component or product costs.


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