centrifugal casted bronze housing

Centrifugal Cast Bronze Housing for Propulsion Shaft Bearing Assemblies， Instant Pricing & Lead Times， custom design, simple or complex.

Centrifugal Casting Process Centrifugal casting is a highly effective method for producing cylindrical components, such as housings for propulsion shaft bearings. This process involves pouring molten metal into a spinning mold, using centrifugal force to distribute the metal evenly around the mold’s circumference. The result is a dense, homogeneous casting with improved mechanical properties and minimal defects. . Call us today for more info, Range Of Facilities.

Centrifugal Cast Golden Leaded Tin Bronze Casting, For Industrial, Shape: Cylindrical

Common bronze alloys used in centrifugal casting for marine applications include:

• Aluminum Bronze: Offers high strength and excellent corrosion resistance, particularly in seawater environments.
• Phosphor Bronze: Known for its toughness, strength, and low coefficient of friction.
• Lead Bronze: Provides good machinability and resistance to wear

Advantages of Centrifugal Casting

• High Density and Homogeneity: Centrifugal force drives out impurities and gas bubbles, resulting in dense castings free from inclusions and blow holes.
• Improved Mechanical Properties: This process enhances tensile, creep, and fatigue strength by up to 30% compared to static and investment casting methods.
• Material Efficiency: The process minimizes waste and reduces the need for extensive machining, as the castings are closer to the final dimensions required.
• Defect-Free Castings: Centrifugal casting eliminates common casting defects such as porosity, shrinkage cavities, and gas pockets.

Bronze Alloys for Shaft Bearing Housings Bronze is a preferred material for shaft bearing housings due to its excellent wear resistance, low friction properties, and ability to withstand marine environments. Common bronze alloys used in centrifugal casting include:

• Phosphor Bronze: Known for its toughness, strength, and low coefficient of friction.
• Aluminum Bronze: Offers high strength and excellent corrosion resistance, particularly in seawater environments.
• Leaded Bronze: Provides good machinability and resistance to wear.

Application in Propulsion Shaft Bearing Assemblies Propulsion shaft bearing assemblies are critical components in marine propulsion systems, supporting the shafts that transmit power from the engine to the propeller. These assemblies must withstand high rotational speeds, significant loads, and harsh marine conditions.

Types of Bearings

• Full Case Bearings: Located at the stern, these bearings provide comprehensive support for the shaft, accounting for both catenary weight forces and reverse thrust forces from the propeller.
• Half Case Bearings: Used in other positions along the shaft, these bearings support the weight of the shaft without the need for full encasement.
• Tilting Pad Bearings: These bearings adjust to load, speed, and oil viscosity, providing enhanced load capacity and reduced friction.
• Roller Bearings: Suitable for applications where low friction at all speeds is required, such as in steam turbine installations.

Design Considerations When designing bronze housings for propulsion shaft bearings, several factors must be considered:

• Load Capacity: The housing must support the weight and rotational forces of the shaft.
• Material Selection: The chosen bronze alloy should offer the necessary strength, wear resistance, and corrosion resistance.
• Cooling and Lubrication: Effective cooling and lubrication systems are essential to prevent overheating and reduce wear.
• Machining Tolerances: Precision machining ensures that the bearings fit correctly and function smoothly.

Conclusion Centrifugal cast bronze housings are an excellent choice for propulsion shaft bearing assemblies due to their superior mechanical properties, defect-free structure, and material efficiency. By selecting the appropriate bronze alloy and considering key design factors, these housings can provide reliable performance in demanding marine environments.

For more detailed information on the centrifugal casting process and its benefits, refer to relevant sources. For insights into the design and construction of propulsion shaft bearing assemblies, consult specialized references in the field.

Bronze Material: SAE 660 – ASTM B584 C93200

Overview: SAE 660, also known as C93200 bronze, is a high-lead tin bronze alloy that is widely recognized for its excellent bearing properties. It conforms to the ASTM B584 specification, which covers copper alloy sand castings for general applications.

Composition:

• Copper (Cu): 83%
• Tin (Sn): 7%
• Lead (Pb): 7%
• Zinc (Zn): 3%
• Other Elements: Small amounts of iron, nickel, and other elements.

Key Properties:

• High Load Capacity: Capable of withstanding significant load without deformation.
• Excellent Machinability: Easy to machine, reducing production time and costs.
• Good Wear Resistance: Suitable for applications involving frequent and heavy use.
• Corrosion Resistance: Resistant to corrosion in various environments, including marine applications.
• Self-Lubricating: The lead content provides inherent lubricity, reducing the need for additional lubrication.

Applications: SAE 660 bronze is commonly used in applications where durability and resistance to wear are critical, such as:

• Bushings: Often used in heavy machinery and automotive applications.
• Bearings: Ideal for bearings that operate under high loads and low to medium speeds.
• Wear Plates: Used in equipment subject to heavy wear.
• Gears: Suitable for gears requiring a combination of strength and machinability.
• Pump Components: Effective in pump applications due to its corrosion resistance and wear properties.

Benefits:

• Durability: Long-lasting performance in demanding environments.
• Efficiency: Reduces maintenance needs due to its self-lubricating properties.
• Versatility: Suitable for a wide range of industrial applications.
• Cost-Effective: Offers a good balance of cost and performance.

Conclusion: SAE 660 (C93200) bronze is a versatile and reliable material ideal for applications requiring high load capacity, excellent machinability, and good wear resistance. Its composition and properties make it a preferred choice for bushings, bearings, wear plates, gears, and pump components in various industries.

For detailed specifications and technical data, refer to the ASTM B584 standard and consult with material suppliers to ensure the appropriate selection for your specific application needs.

Centrifugally cast bronze components are widely used in marine propulsion systems due to their excellent mechanical properties, corrosion resistance, and suitability for demanding marine environments. Here are some typical applications:

Propulsion Shaft Bearing Housings: Centrifugally cast bronze is commonly used for manufacturing bearing housings that support the propulsion shaft. These housings provide crucial support and alignment for the shaft, ensuring smooth operation and reducing vibration.

Stern Tube Bearings: Bronze alloys cast using the centrifugal method are ideal for stern tube bearings, which support the propeller shaft as it exits the hull. These bearings must withstand high loads, resist corrosion, and provide reliable performance in seawater environments.

Strut Bearings: Centrifugally cast bronze is used for strut bearings, which support the propeller shaft between the hull and the propeller. These bearings must handle both radial and axial loads while resisting marine corrosion.

Rudder Bearings: The excellent wear resistance and low friction properties of centrifugally cast bronze make it suitable for rudder bearings, which must withstand high loads and frequent movement.

Pump Casings and Impellers: Marine pumps often utilize centrifugally cast bronze components due to their corrosion resistance and ability to maintain dimensional stability in seawater.

Propeller Hubs: Some propeller hubs are manufactured using centrifugally cast bronze, taking advantage of the material’s strength and corrosion resistance.

Bushings and Wear Rings: Various bushings and wear rings in marine propulsion systems benefit from the properties of centrifugally cast bronze, providing long-lasting performance in challenging conditions.

The centrifugal casting process offers several advantages for these applications:

• High Density and Homogeneity: The centrifugal force drives out impurities and gas bubbles, resulting in a casting that is dense and free from inclusions.
• Improved Mechanical Properties: The process can enhance tensile, creep, and fatigue strength compared to other casting methods.
• Fine-Grained Structure: Rapid cooling during the casting process promotes the development of a finer grain structure, contributing to improved structural integrity.