CuSn7ZnPb Bronze Bushing
CuSn7ZnPb Bronze Bushing
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.
CuSn7ZnPb Bronze Bushing supplier
CuSn7ZnPb, also known as leaded tin bronze, is a German standard-casting alloy with high lead content. It follows DIN 1705-1981 for copper-tin and copper-tin-zinc casting alloys. This bronze alloy offers excellent strength, superior sliding and anti-friction properties, and outstanding machinability, making it ideal for various industrial applications.
Copper Alloy, Continuous Casting as per EN1982 – CuSn7Zn4Pb7-C (CC493K) – GC
Material Characteristics
Chemical Composition: CuSn7ZnPb bronze is composed of copper (Cu), tin (Sn), zinc (Zn), and lead (Pb), with a tin content of 7%. The alloy may also include trace elements like phosphorus (P), aluminum (Al), iron (Fe), antimony (Sb), and bismuth (Bi) to achieve specific performance requirements.
Mechanical Properties: This alloy provides high strength and hardness, making it resistant to sliding friction. It is highly machinable and weldable, allowing it to be processed into components that endure wear and friction.
Corrosion Resistance: CuSn7ZnPb bronze exhibits excellent resistance to corrosion in atmospheric conditions, freshwater, and certain chemical environments, making it suitable for demanding applications.
Processing Capabilities
CuSn7ZnPb bronze bushings can be easily machined, cut, welded, milled, drilled, and stamped, offering versatility in manufacturing various shapes and sizes to meet specific application needs.
Application Fields
CuSn7ZnPb bronze bushings are widely used in multiple industries due to their outstanding properties, including:
- Mechanical Engineering: Ideal for components subject to friction and wear, such as bearings, washers, and bushings.
- Automotive Industry: Commonly used in critical parts like automotive bearings, bushings, and other friction-related components.
- Marine Industry: Due to its corrosion resistance, this bronze is utilized in shipbuilding for parts exposed to harsh marine environments.
- Chemical Industry: Employed in manufacturing corrosion-resistant equipment and components in chemical processing.
Conclusion
CuSn7ZnPb bronze bushings are high-performance leaded tin bronze products with excellent strength, wear resistance, corrosion resistance, and machinability. These properties make them indispensable in industries such as mechanical manufacturing, automotive, marine, and chemical sectors.
Type: Leaded bronzes, known for excellent resistance to corrosion and abrasion, with good machinability and long service life.
Applications: Ideal for machine parts such as bushings and bearings operating under static loads at normal temperatures.
Chemical Properties (DIN 1705, 1709, 1714)
- Cu: 81.0-85.0%
- Sn: 6.0-8.0%
- Pb: 5.0-7.0%
- Zn: 3.0-5.0%
- Fe: 0-0.25%
- Ni: 0-2.0%
Mechanical Properties (DIN 1705, 1709, 1714)
- Rm: 270 MPa
- Rp02: 130 MPa
- A: 13%
- HB: 75
CuSn7ZnPb bronze bushing
Applications of CuSn7ZnPb Bronze Bushing in Machine Tool Bearings and Crane Bearings
1. Precision and Rigidity in Machine Tool Bearings
Machine tool bearings require high precision and rigidity. CuSn7ZnPb bronze bushings, with their excellent precision machining capability and dimensional stability, ensure the high precision and rigidity necessary for machine tool bearings. This contributes to maintaining stable machining accuracy and consistent product quality during operations.
2. High-Speed Rotation and Low Noise
Machine tool bearings need to withstand the immense centrifugal force and friction generated by high-speed rotation. CuSn7ZnPb bronze bushings offer superior wear resistance and a low friction coefficient, enabling them to operate quietly and stably even under high-speed conditions.
3. Corrosion Resistance
In certain specialized working environments, such as those involving moisture or corrosive gases, CuSn7ZnPb bronze bushings exhibit excellent corrosion resistance. This ensures long-term, stable operation of machine tool bearings in harsh conditions.
Applications in Crane Bearings
1. Load Bearing and Impact Resistance
Crane bearings must withstand significant loads and impact forces. CuSn7ZnPb bronze bushings, with their high strength and toughness, ensure the stability and safety of crane bearings under heavy loads and impact conditions.
2. Wear Resistance and Longevity
During the frequent lifting and movement of cranes, bearings undergo substantial friction and wear. The excellent wear resistance of CuSn7ZnPb bronze bushings enables them to maintain a low wear rate over time, extending the service life of the bearings.
3. Corrosion Resistance and Adaptability
Cranes often operate outdoors or in harsh environments. The corrosion resistance of CuSn7ZnPb bronze bushings allows them to adapt to various complex working conditions, ensuring the stable operation of crane bearings.
Conclusion
The applications of CuSn7ZnPb bronze bushings in spindle bearings, machine tool bearings, and crane bearings demonstrate their excellent performance characteristics and wide-ranging value. These qualities make CuSn7ZnPb bronze bushings an ideal choice for these critical components, ensuring the stable operation and high efficiency of mechanical equipment.
