ASTM B505 CuSn12 Bronze Sleeve Bushings are precision-engineered components made from a high-strength and heat-resistant aluminum bronze alloy containing iron and manganese elements. These bushings exhibit excellent mechanical properties at elevated temperatures, maintaining stability up to 400°C. Their superior abrasion resistance, coupled with good corrosion resistance in atmospheric, freshwater, and seawater environments, makes them ideal for a wide range of applications.

The CuSn12 alloy composition provides excellent friction-reducing properties, ensuring smooth operation and long service life in demanding environments. The bushings can be easily processed by pressure methods in the hot state and can be heat-treated for further strengthening. While they are weldable, they are not recommended for brazing. However, they exhibit good machinability, making them suitable for precision cutting operations.

ASTM B505 CuSn12 Bronze Sleeve Bushings are commonly used in the manufacture of high-strength and wear-resistant parts such as bearings, bushings, gears, and other critical components. Their non-sparking properties under impact make them suitable for use in applications where the risk of fire or explosion is a concern. Additionally, their shape memory effect and potential as a shape memory alloy offer further versatility in their applications.

The bushings are available in various sizes and configurations, including flanged, sleeve, washer, and customized designs. They are packaged securely in plastic bags, cartons, or wooden cases to ensure safe transit and storage. Customization options include logo imprinting, packaging, and graphic customization to meet specific customer requirements.

In conclusion, ASTM B505 CuSn12 Bronze Sleeve Bushings are high-performance components that offer exceptional strength, wear resistance, and corrosion resistance, making them an excellent choice for demanding applications across various industries.

CuSn12 Tin Bronze Bush Material Groove Bearings

High-Quality CuSn12 Tin Bronze Bush Material Groove Bearings
Factory Supply CuSn12 Tin Bronze Bush Bearing
Professional CuSn12 Tin Bronze Bush Bearing
CuSn12 Tin Bronze Bush Material Bearing
High-quality CuSn12 Tin Bronze bush-bearing

Casting Bronze Bushing Supply - High-quality factory, Standard material CuSn12* / ASTM C90800 (other alloys available on request), Oil or grease lubrication is necessary. Because of lubrication grooves or lubrication holes, lubrication intervals can be reduced to a minimum, and lubricant allocation can be improved. products, Pursue high technology & good brand, combine the best quality products & reasonable price.

Tin Bronze Bush for plain bearings made from copper alloys, Custom Metal Parts CNC Machining Aluminum Bronze Bushing, Provide for your cast bronze bushing tin bronze material according to China's national standard, but also can produce it as the related standards of the ASTM(UNS, SAE), EU and JIS, etc. What's more, we can also develop the self-lubricating bearings material according to the special requirements and drawings of yours.

CuSn12 Bronze Bushing Material

The closest international standards are the ASTM B505 C90700 and DIN 1705 CuSn12

Casting Copper Alloy Bronze Bearings

Type:Tin Bronze Bushing

Beyond Grease: A Deep Dive into Oilless Bushings & Why Viiplus Leads the Way

Friction is the enemy of efficiency. In countless machines, from massive industrial equipment to intricate automotive components, the constant battle against wear and tear dictates performance, longevity, and maintenance costs. Traditionally, grease and oil have been the go-to solutions, but they come with their own set of challenges: frequent re-lubrication, potential contamination, environmental concerns, and limitations in extreme conditions.

Enter the world of oilless bushings, also known as self-lubricating bearings or sliding bearings. These innovative components offer a smarter way to manage friction, delivering reliable movement without the need for external lubrication.

At Viiplus (www.viiplus.com), we don't just supply these components; we engineer solutions. Leveraging deep expertise in metallurgy and tribology (the science of friction, wear, and lubrication), we've become a leading name in sliding bearing technology. But what exactly are oilless bushings, and why should they be on your radar? Let's dive deeper.

What Exactly Are Oilless Bushings? The Science of Self-Lubrication

Unlike traditional ball or roller bearings that rely on rolling elements and require constant lubrication films, oilless bushings operate on the principle of sliding motion. Their "magic" lies in their material composition and structure, designed to provide their own lubrication at the bearing surface. This can be achieved through several key technologies:

1. Solid Lubricants Embedded: Materials like graphite, MoS₂, or PTFE are embedded directly into the metallic matrix (often bronze) of the bushing. As the shaft rotates or slides, a minuscule amount of this solid lubricant is transferred to the mating surface, creating a low-friction film.

2. Porous Metal Structures: Sintered bronze or iron materials are created with microscopic pores. These pores are vacuum-impregnated with oil during manufacturing. In operation, slight heating causes the oil to expand and seep onto the bearing surface, providing lubrication. When it cools, the capillary action draws the oil back in, creating a closed-loop system.

3. Layered Composites: These often feature a strong backing (like steel), an intermediate sintered layer (like bronze), and a low-friction overlay (often PTFE-based). The PTFE layer provides the primary sliding surface, offering extremely low friction.

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Contrasting Logic: Oilless vs. Traditionally Lubricated Bearings

The Tangible Benefits: Why Make the Switch?

Choosing oilless bushings isn't just about eliminating grease guns. It's about unlocking significant operational advantages:

• Drastically Reduced Maintenance: This is the most obvious benefit. No re-greasing means less labor, less scheduled downtime, and simplified maintenance protocols. Imagine the savings across a factory floor!

• Enhanced Reliability: Lubricant starvation is a major cause of bearing failure. Self-lubricating bearings ensure consistent lubrication, leading to predictable performance and longer service life, especially in hard-to-reach locations.

• Superior Performance in Harsh Conditions: Oilless bushings excel where traditional lubricants fail:

  • High Temperatures: Certain types can operate at temperatures far exceeding the limits of conventional greases.

  • Low Temperatures: No grease means no stiffening or freezing issues.

  • Contaminated Environments: The absence of sticky grease reduces the ingress of dirt, dust, and debris.

  • Vacuum or Underwater: Ideal for applications where liquid lubricants are impractical or impossible.

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• Cost Savings (Total Cost of Ownership): While the initial purchase price might sometimes be higher, the TCO is often significantly lower due to savings on lubricants, labor, downtime, and potential component failure replacement.

• Environmental Friendliness: Eliminating oil and grease leakage prevents contamination of products, machinery, and the environment. Crucial for industries like food processing, pharmaceuticals, and textiles.

• Compact & Simplified Designs: Without the need for lubrication systems (nipples, lines, reservoirs), machine designs can be more compact and streamlined.

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Exploring Viiplus's Portfolio: Finding Your Solution

Viiplus offers a comprehensive range of self-lubricating bearings designed to meet diverse application needs. Understanding the different series helps in selection:

• JDB Series (Graphite Plugged Bronze): Excellent for high-load, low-speed applications, intermittent motion, and high temperatures. The graphite plugs provide continuous solid lubrication. Ideal for heavy machinery, molds, and hydraulic components.

• SF Series (PTFE-Based Composite): Typically metal-backed (SF-1: steel, SF-2: steel/bronze) with a PTFE-based lining. Offers very low friction, good wear resistance, and suitability for dry running or marginal lubrication. Common in automotive, office equipment, and hydraulics.

• JF Series (Bimetal Bushings): Combines a steel backing with a sintered bronze or lead-bronze lining. Good load capacity and fatigue strength. Often used with grease or oil but can operate marginally lubricated. Found in engines, chassis parts, and agricultural machinery.

• FB Series (Wrapped Bronze): Often made from bronze strip, sometimes with lubrication pockets or through-holes. A cost-effective solution for medium loads and speeds, typically requiring initial greasing but offering extended re-lubrication intervals.

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Quick Comparison Chart (General Guide):

(Note: This is a simplified guide. Always consult specific product data sheets or Viiplus experts for precise application requirements.)

Uncertain which material or type suits your project? Our Bushing Material Selection Guide is designed to help, or Contact Us for a Free Quote and Expert Advice.

Why Partner with Viiplus? Expertise Meets Quality

Choosing the right supplier is as critical as choosing the right bushing. Here’s why companies worldwide trust Viiplus:

• Deep Expertise: Our foundation in metallurgy and tribology, coupled with a talented R&D team, means we understand the science behind reliable movement. We don't just sell; we solve friction challenges.

• Uncompromising Quality: We employ advanced manufacturing techniques (including sand casting, centrifugal casting, metal casting, investment casting) and a rigorous quality management system, ensuring every bushing meets the highest standards.

• Comprehensive Range: From standard metric sizes in JDB, SF, JF, and FB series to custom solutions including cylindrical, flange, double flange bushings, wear plates, and guide rails – we have the portfolio to match your needs.

• Global Reach, Seamless Logistics: Based in China, we ship sliding bearings worldwide. Our professional team handles customs clearance efficiently, ensuring smooth, timely delivery with all necessary documentation.

• Customer-Centric Approach: We believe in ethical practices and building trust. We offer flexible production (single units to large series), competitive pricing, and  online support.

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