If you are looking for high-quality graphite plugged bronze bushings, we have the perfect solution for you. Our graphite plugged bronze bushings are designed to provide superior wear resistance and durability, ensuring smooth and reliable operation of your machinery.

The unique combination of graphite and bronze material in our bushings provides exceptional lubrication and reduces friction, leading to lower maintenance costs and increased efficiency. The graphite plugs also help to disperse heat, preventing excessive wear and extending the lifespan of the bushings.

Whether you need bushings for heavy-duty industrial applications or precision machinery, we have a wide range of sizes and specifications to meet your requirements. Our team of experts is dedicated to providing exceptional customer service and ensuring that you receive the best possible product for your needs.

So don't wait! Order your graphite plugged bronze bushings today and experience the difference in performance and reliability. Contact us for more information and to place your order.

Graphite Plugged Bronze Bushings | Order Today, cast high-strength bronze using a specially formed graphite plug as a lubricant.

focuses on applications where size, weight, and performance are critical, lowers cost and increases lubricating capacity, lowers cost, and increases lubricating capacity.

Graphite Plugged Bronze Bushings | Order Today
High-Strength Bronze Oilless Bushing | Lowers Cost & Increases Lubricating Capacity
Oilless Bushing Technology for Electric Motor | Size, Weight & Performance Critical
Self-Lubricating Bushings | Heavy Load, High-Temperature Applications
Solid Lubricants Bronze Bushing | High-Density Compounds, High Temp. Resistance

For example, Graphite Plugged Bronze Bushings for the electric motor, oilless bushing technology offers significant benefits above and beyond current electric motors and generators.

Graphite Plugged Bushings are a complete line of Self-Lubricating Bushings that excel whenever standard lubrication is impractical, including heavy load, high-temperature applications. They are manufactured from a variety of Bronze Alloys, including C95400 Aluminum Bronze, C93200 Bearing Bronze, and C86300 Manganese Bronze.

• Self Lubricated when standard lubrication is impractical
• Performs well under various loads, types, and speed operations
• Resists corrosive and hostile environments
• Excellent performance in medium to high temperatures up to 600° F
• Compatible with most viscous lubricants & Oil and Grease applications

SOLID LUBRICANTS BRONZE BUSHING

Our solid lubricants are high-density compounds of graphite, , and metals. Lubricants are oriented to motion direction. Direction to be specified with the order. Application for temperature up to 350°C, NOT for water and vapor Use for temp. up to 80°C. Designed for use in water and humidity. Very low coefficient of friction

Characteristics:

Have Incomparable performance under a high load, low-speed operation. Also, perform well without lubrication,
♦ Excellent wear resistance in such places where an oil film is difficult to be formed due to reciprocating, oscillating motions and frequently intermittent operations
♦ Remarkable resistance to corrosion and resistance to chemical attack
♦ Maintenance-free and save operating cost.

Standard material: CuZn25A16Fe3Mn3 + Graphite

Availability:

♦ Cylindrical Bronze Bushing, flanged oilless bush, thrust washer, and slide plate are a standard fabrication.
♦ Special designed solid metal bearing and material can be made according to your design.
♦ Other materials can be made based on your requirement.

Choose Your Graphite Style

STANDARD DIMENSIONS FOR LUBRICATION GROOVES

Standard material CuZn25Al5 / ASTM C86300. For additional
metal alloys, see our oilless bushing material guide.

Solid bronze sliding bearing with solid lubricant inserts • Maintenance-free

Choose Your Oilless Bushings Material / Alloy

C93200 Bearing Bronze
C95400 Aluminum Bronze
C86300 Manganese Bronze

C93200 Bearing Bronze Chemistry

(%max., unless shown as range or min.)
NOTE: Information courtesy of Copper.org

(1) In determining Cu min., Cu may be calculated as Cu + Ni.
(2) Ni value includes Co.
(3) For continuous castings, P shall be 1.5%, max.
Note: Cu + Sum of Named Elements, 99.0% min.

C95400 Aluminum Bronze Chemistry

(%max., unless shown as range or min.)
NOTE: Information courtesy of Copper.org

(1) Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.5% min.

C86300 Manganese Bronze Chemistry

(%max., unless shown as range or min.)
NOTE: Information courtesy of Copper.org

(1) In determining Cu min., Cu may be calculated as Cu + Ni.
(2) Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.0% min.

Application

The applications for graphite plugged bushings are virtually unlimited. From hard to maintenance applications to high-temperature environments to heavily loaded applications, graphite plugged bronze bushings exhibit an excellent service and wear resistance. Such applications include:

Motors and generators, Steel Mills, Furnace drag outs, Drying Equipment, Roasters, Heat Exchangers, Press dies, Assembly lines, Machine tools, Chain Conveyors, Offshore structures, Deck cranes, Winches, Hatch covers, Rudder arms, Hoisting Equipment, Tire & Paper Mills, Toggle link bearings for injection mold machinery, Mixers, Grinders, Pulverizers, Construction Machinery, Mining
rigs, Arm link bearings, Power shovels, and more.

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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