CuSn12Ni2 Bronze Bearing
CuSn12Ni2 Bronze Bearing
Self-lubricating bronze bearings are engineered for applications where external lubrication is impractical. Solid lubricants are compressed and molded directly into the bearing to guarantee a maintenance-free product. No additional lubrication is necessary.
CuSn12Ni2 Bronze Bearing – High-Strength, Corrosion-Resistant, Durable Bearings
1. Product Characteristics
- High Hardness and Wear Resistance: CuSn12Ni2 bronze bearings possess high hardness and excellent wear resistance, making them suitable for use in high-load and friction conditions, offering a long service life.
- Good Casting Performance: This alloy has favorable casting properties, making it easy to manufacture into various complex bearing components.
- Corrosion Resistance: CuSn12Ni2 bronze demonstrates good corrosion resistance in atmospheric and freshwater environments, protecting against corrosive elements.
- Comprehensive Mechanical Properties: In addition to the above traits, this alloy has a high load-bearing capacity, good machinability, and the ability to withstand impact.
2. Composition
The primary components of CuSn12Ni2 bronze include copper (Cu), tin (Sn), lead (Pb), zinc (Zn), and nickel (Ni). The specific content is as follows:
- Copper (Cu): 81.0% – 85.0%
- Tin (Sn): 6.3% – 7.5%
- Lead (Pb): 6.0% – 8.0%
- Zinc (Zn): 2.0% – 4.0%
- Nickel (Ni): ≤ 1.0%
The well-balanced proportion of these elements gives CuSn12Ni2 bronze its superior overall properties.
3. Applications
CuSn12Ni2 bronze bearings are widely used in various situations where high load and friction are present, such as:
- Mechanical parts like connecting rods, bushings, and bearings
- Marine equipment, including pumps, valves, and bearings
- Automotive parts like gears and components
These applications highlight the reliability and durability of CuSn12Ni2 bronze bearings under complex working conditions.
4. Performance Parameters
While specific performance metrics may vary depending on the manufacturer and production process, CuSn12Ni2 bronze bearings generally exhibit the following characteristics:
- High tensile and yield strength
- Good elongation and hardness
- Low coefficient of thermal expansion and high thermal conductivity
- Excellent wear resistance and corrosion resistance
These performance parameters establish CuSn12Ni2 bronze bearings as a premium material for bearing applications.
Conclusion
CuSn12Ni2 bronze bearings offer outstanding performance and broad application potential as a copper alloy bearing material. When selecting and using these bearings, it’s essential to choose the appropriate type and configuration based on the specific working conditions and performance requirements.
CuSn12Ni2 bronze bearing
CuSn12Ni2 Bronze Bushing with Graphite Plugs
CuSn12Ni2 bronze bushing with graphite plugs is a specialized mechanical component that combines the benefits of bronze and graphite materials. It is widely used in applications requiring high wear resistance, corrosion resistance, and excellent lubrication performance. Below is a detailed explanation of this bushing and its components:
Graphite Plugs
Graphite plugs are embedded into the bushing to provide lubrication and reduce friction. Graphite, being a non-metallic mineral, offers the following key properties:
- Self-Lubricating: The layers of graphite slide easily against each other, providing excellent self-lubricating properties. This significantly lowers the coefficient of friction, reducing wear on the components.
- High Temperature Resistance: Graphite maintains good lubrication properties even at high temperatures, making it suitable for use in high-temperature working environments.
- Chemical Stability: Graphite is chemically stable and resistant to most chemical media, making it less prone to corrosion.
Applications of CuSn12Ni2 Bronze Bushing with Graphite Plugs
This bushing combination is typically used in the following applications:
- Heavy Machinery: Found in industries such as shipbuilding, metallurgy, and mining, where mechanical equipment must withstand heavy loads and harsh working environments.
- Sliding Bearings: Used as a part of sliding bearings to provide stable support and reduce friction and wear between moving parts.
- Precision Instruments: Applied in high-precision instruments like machine tools and measuring equipment, where high accuracy and long service life are essential.
EN 1982 CC484K / CuSn12Ni2 Tin Bronze Bushing
Description: CuSn12Ni2 is a tin bronze alloy containing 12% tin and between 1.5% and 2.5% nickel. The addition of nickel enhances the hardness and corrosion resistance of the material. This alloy is ideal for applications such as gearboxes, toothed gearings, and bearings used under heavy loads and relatively low speeds.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Copper (Cu) | 84.5 | 87.5 |
| Tin (Sn) | 11.0 | 13.0 |
| Lead (Pb) | 0.3 | |
| Zinc (Zn) | 0.4 | |
| Phosphorus (P) | 0.05 | 0.40 |
| Iron (Fe) | 0.2 | |
| Nickel (Ni) | 1.5 | 2.5 |
| Antimony (Sb) | 0.1 | |
| Sulfur (S) | 0.05 | |
| Aluminum (Al) | 0.01 | |
| Manganese (Mn) | 0.2 | |
| Silicon (Si) | 0.01 |
Mechanical Properties (Minimum Values)
| Property | Continuous (GC)1 | Centrifugal (GZ) |
|---|---|---|
| Tensile Strength (Rm) (MPa) | 300 | 300 |
| Yield Point (Rp0.2) (MPa) | 180 | 180 |
| Elongation (A%) | 10 | 8 |
| Brinell Hardness (HBW 10-1000) | 95 | 95 |
Physical Properties
| Property | Value |
|---|---|
| Density (kg/dm³) | 8.6 |
| Specific Heat (J/(g*K)) | 0.376 |
| Thermal Expansion (10⁻⁶ K⁻¹) | 18.5 |
| Thermal Conductivity (W/(m*K)) | 54 |
| Electrical Conductivity (MS/m) | 6.2 |
CuSn12Ni2 tin bronze provides excellent mechanical strength and durability, making it suitable for heavy-duty mechanical applications, particularly under slow-speed, high-load conditions.
