self-lubricating oilless bronze bushing bronze alloy chart and technical data

Bronze bushings are widely used in various applications due to their excellent wear resistance, durability, and self-lubricating properties. Oilless bronze bushings, also known as dry bushings or self-lubricating bushings, are specifically designed to operate without the need for additional lubrication. They are commonly made from various bronze alloys, each offering specific characteristics and performance advantages.

Here is a bronze alloy chart along with some technical data commonly associated with oilless bronze bushings:

1. Bronze Alloy: SAE 841 (Oil-Impregnated Bronze)

   • Composition: Iron (Fe), Copper (Cu), Tin (Sn), Carbon (C)
   • Typical Properties: Good wear resistance, self-lubricating, low friction coefficient, high load capacity, moderate corrosion resistance.
   • Applications: General-purpose bushings, bearings, automotive parts, machinery components.

2. Bronze Alloy: SAE 430B (Phosphor Bronze)

   • Composition: Copper (Cu), Tin (Sn), Phosphorus (P)
   • Typical Properties: Excellent wear resistance, high load capacity, good corrosion resistance, self-lubricating, moderate friction coefficient.
   • Applications: Automotive industry, marine equipment, hydraulic systems, electrical connectors.

3. Bronze Alloy: SAE 660 (C93200) (High-Leaded Tin Bronze)

   • Composition: Copper (Cu), Tin (Sn), Lead (Pb)
   • Typical Properties: Good wear resistance, self-lubricating, high load capacity, moderate friction coefficient, excellent machinability.
   • Applications: Heavy machinery, gearboxes, construction equipment, industrial applications.

4. Bronze Alloy: SAE 841M (Modified Oil-Impregnated Bronze)

   • Composition: Iron (Fe), Copper (Cu), Tin (Sn), Carbon (C), Graphite
   • Typical Properties: Improved wear resistance, self-lubricating, low friction coefficient, high load capacity, excellent corrosion resistance.
   • Applications: High-speed machinery, food processing equipment, chemical pumps, water turbines.

5. Bronze Alloy: Aluminum Bronze (C95400)

   • Composition: Copper (Cu), Aluminum (Al)
   • Typical Properties: Good wear resistance, high strength, excellent corrosion resistance, low friction coefficient, self-lubricating.
   • Applications: Aerospace industry, marine applications, high-pressure valves, bushings for heavy loads.

These are just a few examples of bronze alloys used in oilless bushings. The choice of alloy depends on the specific requirements of the application, including load capacity, environmental conditions, temperature range, and desired performance characteristics.

It’s important to consult with manufacturers or suppliers to obtain detailed technical data and select the most suitable bronze alloy for your specific application. They can provide comprehensive information regarding load ratings, friction coefficients, temperature limits, and other relevant specifications based on their product offerings.

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Bronze bearing bushings are widely used in various mechanical applications due to their durability and low friction properties. Here are some tips to help you find good deals and low prices:

1. Check Online Retailers: Websites like Amazon, eBay, and Alibaba often have a variety of bronze bearing bushings. Be sure to read the product descriptions and reviews carefully to ensure the quality and suitability for your specific application.

2. Bulk Purchases: Usually, buying in bulk can get you a better price per unit. If you require a large quantity, this might be a good option.

3. Compare Prices: There are many suppliers for these parts. Don’t settle for the first price you find – do some research and compare prices from different sellers to get the best deal.

4. Material and Quality: While searching for low prices, don’t forget to consider the quality. Different types of bronze alloys are used in these bushings and they have different properties. For example, SAE 660 bronze bushings are popular for their good load capacity and anti-friction properties. Make sure the material is suitable for your application.

5. Look for Sales and Discounts: Online retailers often have sales or offer discounts on bulk purchases. Keep an eye out for these opportunities to save money.

6. Local Suppliers: Don’t forget to check local suppliers or hardware stores. They may have competitive prices and the advantage of immediate availability.

Remember, the cheapest option may not always be the best. It’s important to consider factors such as the bushing’s material, the reputation of the seller, and the specific requirements of your application when making your purchase.

Solid bronze bushings are indeed versatile and durable components used in a variety of mechanical applications. They come in both straight and flanged styles and are available in metric sizes. This makes them suitable for numerous applications across a wide range of industries.

As you mentioned, these bushings are particularly suited for oscillating movements in both radial and axial directions, as well as applications where the rotating speeds are low. This versatility makes them a valuable part in many different types of machinery.

Lubrication is important for solid bronze bushings. The application of oil or grease not only improves the sliding properties but also reduces wear and tear. This ensures the longevity of the bushing and prevents corrosion, further enhancing its durability.

For bushings with a bore diameter greater than 14 mm, an axial lubrication groove is present on the sliding surface, as indicated by the suffix G1 in their designation. This groove aids in the distribution of the lubricant across the sliding surface, enhancing its performance and extending its life.

All surfaces of a solid bronze bushing are machined, which ensures a smooth surface and precise dimensions. This machining process also allows for a high degree of customization, meaning the bushings can be tailored to fit specific applications.

In summary, solid bronze bushings are a robust, versatile, and reliable choice for many mechanical applications. Their ability to withstand both radial and axial forces, their resistance to wear and corrosion, and their capacity for precise customization make them a preferred choice in many industries.