Graphite impregnated bronze bushings, also known as oil-free bushings, are a highly efficient and long-lasting bearing solution. These bushings are specifically designed to eliminate the need for regular lubrication, significantly reducing maintenance requirements and operational costs.

The key feature of graphite impregnated bronze bushings is the integration of graphite particles within the bronze material. Graphite is known for its excellent lubricating properties, providing a smooth and friction-free surface even without the use of external lubricants. This impregnation process ensures that the lubricating properties of graphite are evenly distributed throughout the bushing, providing consistent and reliable performance.

The bronze material itself is renowned for its high strength, durability, and corrosion resistance. Combined with the lubricating properties of graphite, these bushings are able to withstand heavy loads and extreme conditions while maintaining smooth and efficient operation.

Oil-free bushings are ideal for a wide range of industrial applications, particularly those that require reliable and maintenance-free bearing solutions. They are commonly used in machinery, pumps, motors, and other equipment where lubrication can be challenging or impractical.

In addition to their lubrication-free operation, these bushings are also easy to install and maintain. Their robust design and material choice ensure long-term reliability and performance, minimizing downtime and operational disruptions.

Overall, graphite impregnated bronze bushings provide a cost-effective and efficient solution for oil-free bearing applications, offering superior performance, durability, and maintenance-free operation.

C86200 Cast Bronze Bushings Casting Copper Alloy

Graphite Impregnated Bronze Bushings

Self-Lubricating Graphite Plugged Bronze Sleeve Bushings

Choose from our selection of graphite-impregnated bronze, including metric size bronze products in a wide range of material and sizes. In stock and ready to ship.

graphite impregnated bronze bushings graphite plugged bronze bushings
sliding bearing
bronze sleeve bushing cast bronze bushing
bronze
ASTM b505


Special Cam Bushing Length Inch Sizes Graphite Plugged Bronze Bushings | C86200 SAE430A BRONZE PLATE

As CHINA MANUFACTURER in the field of CAST BRONZE SLEEVE BUSHING technology, VIIPLUS SLIDING BEARING PLUG GRAPHITE BUSHINGS supplies
a range of PLAIN BEARINGS products that have gained an excellent reputation for reliability and performance.
C86200 Manganese Bronze Bearings
CDA 862, High Strength Yellow Brass, ASTM B505, ASTM B271
C86200 (SAE430A), for gear, pillar, casing, shaft, and worm gear transmission

Datong Misumi Dme Bujes Bronze Bushing Motor Gearbox Sleeve Dual Mass Flywheel Repairing Self-Lubricating Bearing Peek Bushing Sliding Bearing

Chemical composition

Type: Lead-Free Brass

Graphite Plugged Sleeve | 1 ID x 1.5 OD x 2 Length
INCH SIZES 1 IN ID x 1.5 IN OD x 2 IN

Performance

Graphite Plugged Cast Bronze Bushings can be utilized where heavy loads must be supported at low to medium speeds
The Plug Graphite Cast Bronze Bushing is able to withstand high temperatures up to 570 F
The self-lubricating feature allows bearings to be used where oiling is difficult, expensive to implement, and where grease/oil cannot be used. Excellent lubrication is achieved even under high loads at low speeds.
Self-lubrication with specially embedded solid lubricants reduces friction. Coefficient of Friction: 0.04 to 0.2 typical
VIIPLUS INTERNATIONAL has since established itself as a leading distributor of Bronze & Steel Bushings , Sintered Bearings Products, Self-lubricated bushings, and Wear plate, in the People's Republic of China. Our goal is to provide the quality bushing products at competitive prices to every industry and especially for the small and medium-sized enterprises.
Material: Cast Bronze and Solid Lubricant Plugs
manganese bronze

Self Lubricated for Higher Temperatures and Heavier Loads
Solid self-lubricating bearing with graphite plug insert | Graphite copper sleeve bushings

• Inch Sized Bushings
• Metric Sized Bushings

Material

C86300 Manganese Bronze
C86300 Typical applications include slow speed heavy duty load bearings, gears, cams, and hydraulic cylinder parts. continuous cast manganese bronze is a high strength, non-heat-treatable copper alloy intended for use in applications requiring a good combination of outstanding wear characteristics and high bearing strength for heavy loads and slow speeds.

Bronze sleeve bearings flanged bronze bushings for sale

Performance

Graphite Plugged Cast Bronze Bushings can be utilized where heavy loads must be supported at low to medium speeds

The Plug Graphite Cast Bronze Bushing is able to withstand high temperatures up to 570 F
The self-lubricating feature allows bearings to be used where oiling is difficult, expensive to implement, and where grease/oil cannot be used. Excellent lubrication is achieved even under high loads at low speeds.
Self lubrication with specially embedded solid lubricants reduces friction. Coefficient of Friction: 0.04 to 0.2

Technical Data

Applications

Bushings For Construction

Manganese Bronze Bearings
Manganese Bronze use area for Heavy duty high strength alloy for gears, cams, slow speed heavy load bearings & screw down nuts
Equipment, Boom Link Bushings for Power Shovels, Toggle Link & Guide Bushings for Injection Mold Machines, Steel Mill Equipment, Furnace Dragouts, Drying Equipment, Roasters, Press Dies, Assembly Lines, Hydro-Electric Structures, Winches, Hoisting Equipment, Tire and Paper Mill Machinery, and Many Other Industrial Applications.

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.

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.

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.

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.