Last Updated on October 21, 2024 by Chen
A bronze bushing is a type of plain bearing made from bronze, commonly used to reduce friction between rotating or sliding parts in machinery. These bushings are durable, resistant to corrosion, and can operate efficiently in high-load and low-speed applications. Bronze bushings are often used in automotive components, industrial equipment, pumps, and electrical appliances due to their strength, lubricating properties, and ability to withstand high temperatures.
Most Common Materials
Bronze bushings can be made from various bronze alloys, each offering specific properties for different applications. Here are some common materials used for bronze bushings:
- Aluminum Bronze: Known for high strength and corrosion resistance, especially in seawater applications.
- Bearing Bronze (SAE 660): A common choice for bearings, offering excellent wear resistance and good machinability.
- Phosphor Bronze: Contains tin and phosphorus, providing good strength, toughness, and low friction.
- Silicon Bronze: Corrosion-resistant and offers strength in high-temperature environments.
- Tin Bronze: Known for good resistance to wear and fatigue in high-load applications.
- Manganese Bronze: High-strength material suitable for high-load, high-speed applications.
- Nickel Aluminum Bronze: Offers excellent corrosion resistance, especially in marine and industrial environments.
- Brass Plates: Sometimes used for bushings, though typically brass is softer than bronze.
- Bronze Castings: Often used for custom applications requiring complex shapes or large sizes.
7 Common Types of Bronze Bushings
- Sintered Bronze Bushings
- Cast Bronze Bushings
- Oil Impregnated Bronze Bushings
- Flanged Bronze Bushings
- Plain Bronze Bushings
- Wrapped Bronze Bushings
- Graphite Plugged Bronze Bushings
| Bushing Type | Specifications | Applications | Pricing Information |
|---|
| sintered bronze bushings | Sintered bronze bushings consist of a porous bronze matrix that is impregnated with lubricant. They typically feature standard tolerances (ID: G7, OD: S7) and can withstand medium-speed and low-load conditions. Maximum operating temperatures range from -10°C to 90°C (+15°F to +194°F). | Common applications include machinery, automotive components, and household appliances, particularly where self-lubricating and maintenance-free features are required, such as in packaging and textile machinery. | $0.50 to $40.00 depending on size and application. |
| cast bronze bushings | C93200 alloy with 81-85% copper, 6.3-7.5% tin, and varying amounts of lead, zinc, and nickel. Known for strong mechanical properties and wear resistance. | Used in heavy machinery, hydraulic systems, automotive components, and pump mechanisms. | $20.78 for 1″ ID x 1.5″ OD cast bronze bushing. |
| oil impregnated bronze bushings | Made from a porous bronze material impregnated with oil to reduce friction and eliminate the need for external lubrication. Resistant to corrosion, wear, and impact, designed for high speeds or variable loads. | Used in industrial applications involving high speeds or variable loads, commonly found in conveyor systems, pumps, and machinery where maintenance-free operation is crucial. | $1.71 to $2.73 depending on size. |
| flanged bronze bushings | Capable of operating under high loads, made from high-quality bronze materials such as CuZn25Al5. Maximum working temperature of 350 ºC. Excellent wear and corrosion resistance with self-lubricating properties and minimal maintenance requirements. | Used in mining machinery, construction equipment, automotive applications, marine equipment, and industrial machinery due to durability and reliability under high load conditions. | $3.70 to $26.49 depending on size and supplier. |
| plain bronze bushings | High mechanical strength, low friction, excellent wear resistance, suitable for heavy loads. | Used in industrial machinery, automotive applications, and various equipment requiring strong support under load. | $0.5 – $5 per piece. |
| wrapped bronze bushings | Made from CuSn8 bronze; Max Load: 40 N/mm² (dynamic), 120 N/mm² (static); Max Speed: 2.0 m/s; Temperature Range: -100 to +200°C. Operates in low friction and maintenance-free environments. Suitable for high load and low speed applications. | Commonly used in agricultural vehicles, lifting gear, offshore applications, and excavators. Ideal for harsh conditions where maintenance is challenging. | $0.10 to $2.00, depending on order quantity. |
| graphite plugged bronze bushings | Material Composition: CuSn5Pb5Zn5. Typical Size: 30 mm ID x 40 mm OD x 25 mm OAL. | Used in metallurgical rolling equipment, gas turbines, mining machinery, shipbuilding, and aerospace navigation due to self-lubricating properties and resistance to high temperatures and load. | $21.58. |
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