Centrifugal casting graphite plugged bushings, made from the C86300 alloy, are designed for heavy-duty and large-scale applications. The centrifugal casting process ensures a dense and uniform structure, which improves the mechanical properties and wear resistance of the bushings.

The C86300 alloy, also known as manganese bronze, is a copper-based alloy that contains manganese, aluminum, iron, and other elements. It is known for its excellent strength, ductility, and corrosion resistance, making it a suitable material for large-size bushings.

The graphite plugged design of these bushings provides superior lubrication and wear reduction. Graphite is a natural lubricant that helps reduce friction between the bushing and the mating surface, resulting in smoother operation and longer service life.

These centrifugal casting graphite plugged bushings are commonly used in industrial applications such as mining, power generation, and heavy machinery. Their large size and robust construction make them suitable for handling high loads and speeds.

Centrifugal Casting Graphite Plugged Bushings Large Size C86300 Alloy

Specializes In The Research,Development And Production Of Bronze Machining Bushings & Self Lubricating Bearings.
(C86300,CuZn24Al6Fe3Mn4,SAE430B)Brass+Bronze+Graphite Customized material can be made based on your requirement.
Discovery centrifugal casting large size bronze bushings in metric sizes. The mold casting is characterized in that the solid copper alloy bearing cage mold casting is produced by a special centrifugal casting mold. Order Online Today!

Bronze Machining Bushings Made-To-Order From China.

Graphite plugged bushings are a special type of bushing that is used in applications that need continuous lubrication, but don’t offer easy access for the lubrication to be added manually on a regular basis. This type of bushing is made with graphite impregnated into the small holes in the bushing’s surface. When in use, these bushings release the graphite, creating a film of lubricant to keep machinery running smoothly.

The following is the common bronze bearing material:

1.Tin Bronzes C90300 C90500 C90700

2.Leaded Tin Bronzes C83600 C92200 C92900 C93200(SAE660) C93700(SAE64)

3.Manganese Bronzes C86200 C86300 C86500

4.Aluminum Bronzes C95200 C95400 C95500

5.Lead-free Bronzes C89833 C89320

Alloy C86300/C86200 are considered this family’s workhorse alloyS and is widely used in sliding bearing & oilless guide applications.
Industrial hydraulic cylinders bronze bearings manufacturers

Oversized Bronze Bearing Types Plugged Graphite

Centrifugal casting is a technique and method of injecting liquid metal into a high-speed rotating mold so that the liquid metal fills the mold and forms a casting by centrifugal motion.Because of centrifugal motion, the liquid metal can fill the mold well in the radial direction and form the free surface of the casting.Cylindrical inner hole can be obtained without core;Helps remove gases and inclusions from liquid metals;The crystallization process of the metal is affected to improve the mechanical and physical properties of the casting.

ALLOY C86300/C86200 Bronze Bearings

C86300 manganese bronze bearings

We specializes manufactures C86300/C86200 Manganese Bronze as a standard-stocked Bronze Bearing Plugged with metric size.
Applications: Industrial - Selecting Bronze Bearing Materials."Extra large size" or "Large Diameter" Bronze Bearings are manufactured in a variety of sizes and shapes. These include sleeve bearings, flanged bearings, thrust washer and wear plate with graphite or groove.
Our products are exported to more than 60 countries including United States Europe and Japan,widely used in the fields of engineering machinery,hydro power & dams,molding machinery,automation equipment ,ship and mining machinery.
Based on introduction,digesting and absorption of foreign advanced self lubricating bushing technology and cooperating with the famous universities and research institutes,the company has advanced manufacturing capacity of copper alloy solid lubricant embedded bushing,bimetal solid lubricant embedded bushing,thermoplastic bushing,thermosetting composite bushing and spherical bushing.

Precision Sliding Bearings Manufacturing

Feather:

Graphite plugged bushings are beneficial anytime an application needs ongoing lubrication, but also needs to perform for long periods without maintenance. These bearings are self-lubricating, so additional oil and grease is not needed.

Because graphite plugged bearings self-lubricate, money is saved on maintenance and replacement—both in materials and in labor costs. Additionally, less downtime is needed to add more lubricant or perform other everyday maintenance tasks. Graphite plugged bushings have better wear resistance than other types of bearings. This is because when graphite plugged bushings are in use, there is very minimal friction thanks to the lubricant film they produce. Friction is what wears parts down and causes them to need eventual replacement, so limiting this is the key to durability.

Not only do graphite plugged bushings stand up to a great deal of wear and heavy use, they’re also resistant to corrosion when in damp, humid, or marine environments. In industries where bearings will be exposed to caustic chemicals, graphite plugged bushings from Atlas Bronze are an ideal choice for their chemical resistance.


Note: Please send an inquiry, so that we do not contact you to. Thank you for using online orders.

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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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