Our Wrapped Bronze Sleeve Bushings with Bronze Flange Bearing offer a unique combination of durability, precision, and performance. These bushings are designed to provide a smooth and reliable operation in a wide range of industrial and automotive applications.

The bronze material used in these bushings is known for its excellent wear resistance and ability to handle high loads. The wrapped design adds an extra layer of protection, ensuring longer service life and reduced maintenance requirements.

The flanged bearing provides additional stability and support, minimizing movement and maximizing precision. This ensures accurate alignment and smooth operation, even under extreme conditions.

When it comes to size and standard tolerance, we understand that every application is unique. Therefore, we offer a wide range of sizes and tolerances to cater to your specific needs. Wh you require a standard size or a custom-made bushing, we can provide it with precision and accuracy.

Our Wrapped Bronze Sleeve Bushings with Bronze Flange Bearing are suitable for various applications, including heavy machinery, automotive components, and other industrial equipment. They can handle high temperatures, high loads, and demanding operating conditions.

So, if you're looking for a high-quality, durable, and precise Wrapped Bronze Sleeve Bushing with Bronze Flange Bearing, look no further than our offerings. Contact us today to discuss your requirements and get a quote. We'll ensure that you get the perfect bushing for your application.

Wrapped Bronze Sleeve Bushings

VIIPLUS is dedicated to the research and manufacture of all kinds of bushings,spare parts,machinery parts and precision parts. We are approved by the third party concerning the quality certificate. . The quality and performance have met or exceed international standards.

Wrapped Bronze Sleeve Bushings , Bronze Flange Bearing Size & Standard Tolerance Wrapped oilles bushing inside with oil pockets

Tolerances, operating clearance (Bushing data) Shaft and housing tolerances Dimensions Metric (mm)Imperial (inch) made to order.

Standard Tolerance for Flange Bearing (As per to DIN ISO/3547) Cusn8& Cusn6 Bronze-Wrapped Bearing.It is based on high density copper alloy of special formula.

Product Description

The alloy surface is rolled to diamond or global oil grooves. It has high density, good load capacity and wear-resistant. The product is applied to lifting machinery, construction machinery and mining machinery, etc.High-density bronze roll forming or spherical oil pockets, oil hole special internal surface to reduce wear and tear to extend the use of time and good anti-corrosion function.

In addition to the standard products shown in the catalog, you can also provide non-standard products or order according to customer requirements.

Material:CuSn8

Hardness:HB90~120

Temperature limit:-80℃~200℃

Load capacity:75N/mm2

Speed limit:2.5m/s

Flanged Bronze Bearings Size

cusn8&cusn6 Bronze-Wrapped Bearing, specially formulated high-density copper alloy strip base body surface may be requested by the user or hemispherical rolling diamond oil hole, oil sump. Having a high density, high carrying capacity, wear resistance, long life and other advantages, to replace the traditional casting of copper, and more compact, lower cost.090 has been widely used in lifting machinery, construction machinery, automobile and tractor chassis, the machine tool industry and mining machinery can also be made bearings, flanged bushes, thrust washers and bowl like.

Standard Tolerance

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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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