Lead-Free Bimetal Bearing Bushes CuSn6.5 with Flange and Sleeve are a crucial component in automobile engines, designed to provide a smooth and durable interface between rotating shafts and stationary parts.

The bimetallic construction of these bushings combines the benefits of two different metals, typically copper and tin alloys. The CuSn6.5 material, specifically, is a tin-based bronze alloy that offers excellent corrosion resistance and mechanical properties. The addition of tin enhances the alloy's machinability and wear resistance, making it suitable for high-friction applications like engine bearings.

The flanged design of these bushings provides added stability and support, ensuring they remain securely in place during engine operation. The sleeve, which surrounds the bushing and provides additional structural integrity, is also crucial in maintaining the bushing's position and preventing any misalignment.

The lead-free nature of these bushings is an important environmental consideration, as it helps reduce the use of harmful materials in automobile manufacturing. This not only benefits the environment but also ensures compliance with strict environmental regulations.

Overall, Lead-Free Bimetal Bearing Bushes CuSn6.5 with Flange and Sleeve are a reliable and durable solution for automobile engines, ensuring smooth operation and extended service life.

Bimetal bushings

Viiplus is always focusing on the overseas markets, by satisfying the ever-increasing demands of modernization of customers. We could provide products according to the international standards, and could also provide as per the customers' requests. With stable product quality and best level of services, our products have been exported to dozens of countries and regions from the Europe, the United States, and Southeast Asia, etc.

We Manufacture and Design lead free Bimetallic Bearing.Bimetallic bearing bimetallic bearing is one of the bearing lubrication system, the product is high quality low carbon steel back as substrate, the bronze alloy on the surface, through several high temperature sintering and density and rolled copper and steel bimetallic strip coiling, suitable for medium and high impact load under bush and thrust washer and so on many kinds of USES.

Steel backing can be copper plated

Steel+CuSn6.5P0.1

Thickness tolerance between inner hole machining and non-machining

lead-free bimetallic bearings is a kind of environmentally friendly bimetallic bearings, it is a low carbon steel plate as the substrate, the surface of sintered CuSn6.5P0.1 material steel copper alloy products.
products with high fatigue strength and bearing capacity, good sliding performance, in many occasions, can replace the lead double metal bearing or copper sleeve.Bimetallic bearing steel material
Because the matrix is stable to low carbon steel material, so the outer diameter of the shaft sleeve processing accuracy has been guaranteed, and after the product into the hole does not need screw fixation, relying on interference fit can prevent the phenomenon of the outer circle.The change of chemical composition of the inner surface alloy layer can meet the requirements of different bearing pressure, different operating temperature and different sliding speed. The oil groove and hole with different structure can meet the requirements of different refueling methods and prevent the phenomenon of shaft biting when the friction surface is designed in production.

Bimetallic bearing performance

The product has the advantages of good abrasion resistance.It is especially suitable for medium speed, low speed and high load.By means of special technology, various oil grooves, holes and holes can be made on the friction surface, so as to adapt to different lubrication conditions.Products have been widely used in automobile engine, chassis, motorcycle clutch, gear pump wipe plate and lifting equipment and other fields.

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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