When it comes to bush replacement, using plugged graphite is often a preferred choice due to its unique properties and advantages. Graphite, a natural mineral, is renowned for its excellent self-lubricating capabilities, high thermal conductivity, and low coefficient of friction. These properties make it a suitable material for various bush applications, especially in environments where wear and tear are significant concerns.

The "plugged" aspect refers to the process of inserting graphite into metal bushings, usually by press-fitting or machining grooves and filling them with graphite powder. This method provides a wear-resistant and lubricating surface, extending the bush's service life and reducing the need for frequent maintenance.

When selecting plugged graphite bushings for bush replacement, it's essential to ensure the quality and fitment are precise. The graphite should be of high purity and density to ensure optimal performance. Additionally, the bushings should be designed to fit the specific application, taking into account factors like load, speed, and operating conditions.

In summary, using plugged graphite for bush replacement offers several advantages, including improved wear resistance, self-lubrication, and extended service life. However, it's crucial to select the right material and ensure proper installation to maximize these benefits.

Graphite Bushings And Oilless Bearings - Reduced Costs & Downtime‎, bush replacement parts!

High tensile brass alloy solid lubricant embedded

High-Quality Solid Bushings Supplier, Straight bushings, Solid Bearings, Brass Bushings, Plugged graphite

Solid Bronze Bushings, Plugged graphite brass bushes.

Our growing line of sliding bushings products is designed to meet our customers’ evolving needs everywhere we do business.

GRAPHITED BRONZE BEARINGS AND PLATES

A complete line of Graphite Bronze Bearing Products for Special Applications.
Bronze Bearings, flanges, bronze wear plates all shapes and sizes.

Solid bronze bushing,Plugged Graphite Bushings or groove design.

Explore our bronze bearings catalog technical information for product selection bushings.

Bronze bearings
Lower cost, longer bushings service life

Visit the online self-lubricating bearings shop: www.viiplus.com

Our customers’ satisfaction, along with viiplus’s future growth, begins with our associates.

Reduce costs by 50% and weight by 80% with oilless bearings vs. Normal bearings.

CAPTION

Special dimensions and imperial sizes are available on request.

NEXT-LEVEL PERFORMANCE

Consistent. Proven. Self-lubricating Quality.

A wide range of self-lubricating bearing assemblies is used for your application.

OILLESS BEARINGS BUSHINGS PRODUCT INTRODUCTION

Solid bearings are on the high strength of the brass substrate. Mosaic of graphite or a high-performance solid lubrication Mos2 solid lubricant products. It broke through the general bearing on the limitations of the oil film lubrication. In the use process, through the friction heat make solid lubrication and shaft friction, the excellent conditions of forming, powder, and oil lubrication, both to protect shaft wear and tear, and the solid lubrication characteristics of eternity. It is twice as tall as a general copper sleeve, wear-resisting performance is twice as high. Now the product has been used in a metallurgical continuous casting machine, train stents, steel rolling equipment, mining machinery, shipping, steam turbine and other high temperature, high load, low-speed heavy, etc.

Soliding Bushings' Technical data

Bronze Bearings Advantages

1, design flexible, simple and convenient, use range is extensive; Fuel supply system in the mechanical design is a work, time-consuming device, using solid self-lubricating bearings do not need to consider when designing refueling device, save gas devices, as well as for a wide variety of special occasions, solid self-lubricating bearing design into various shapes, so as to meet the needs of a variety of special occasions, using solid self-lubricating bearings, can significantly reduce the mechanical maintenance, oil, and other expenses.

2, no oil can be used; Since solid lubricant is greater than the linear expansion coefficient of the metal matrix, so when to run solid self-lubricating bearings, the oil film will be transferred to the grinding and implemented on a self-lubrication, so solid self-lubricating bearings can be used to add D oil and not oil or grease, even in the case of low speed and high load, also can have good lubrication effect.

3, use cost is lowThe traditional mechanical design, in a certain operating time, want to often come on maintenance, check the oil, the oil supply device was clear, the body itself and the surrounding environment pollution caused by regular gas, result in an increase in maintenance costs, realize self-lubrication, not only can realize the environment clean and tidy, and greatly reduce the cost of the use of lubricating oil..

4, high load, low speed, can produce superior performance; Solid self-lubricating bearing is made of centrifugal casting high strength alloy brass substrate, have the effect of bearing load, with special formula with good self-lubricating properties of graphite lubricant, self-lubricating effect, so it's a combination of their respective advantages, even in high load, low speed, can produce superior performance.

5, reciprocating motion, swing motion, start-stop frequent oil film forming difficult place, can play the superior wear resistance; The arrangement principle of solid self-lubricating bearing lubricant is a guarantee for grinding parts in the process of running parts have lubricant effect, therefore arrange lubricant must be according to the movement direction of the grinding parts to determine the arrangement of lubricant.

6, superior resistance and corrosion resistance;Solid self-lubricating bearing lubricant is using a special formula of graphite, , molybdenum disulfide, such as wear-resistant materials, it has a stable molecular structure, the metal substrate can be according to the different metals have different 9 resistance and corrosion resistance to choose, so solid self-lubricating bearings have the superior resistance and resistance to alone.

7, The product cost more competitive, compared with similar products, the service life is longer, need little maintenance, the replacement replacement cycle is long, good performance.

Solid Bronze Bearing characteristics

In today's modern design self-lubricating bearing material is undergoing a lot of demand. Even in an extremely serious work environment and the maximum load conditions also requires no maintenance. With the constant improvement of the cost requirements, the enterprise also to the reliability of the equipment and factory operation requirement is higher and higher. Metal self-lubricating bearing can meet the free maintenance and in use for a long time under the condition of self-lubrication, which makes it possible to design a reliable long-term self-lubricating system. Metal type self-lubricating bearing materials can be widely used in high load under the condition of low-speed rotation, swing and the straight line reciprocating movement, but also for traditional lubrication cannot reach or are banned from using occasions, or in special conditions such as dust, impact load or irradiation conditions such as the need for the use of long-term and stable.

Bronze Bearings​ Specialty

1.no oil supply device, the cost of oil injection hole, oil processing, and oil supply device, processing and assembling charges, and other extra cost and time savings, can significantly reduce manufacturing costs.
2. lower running cost of sharply lower oil demand and equipment maintenance fee, also be exempted from the risk due to inadequate oil supply.
3.design time shortened without oil can make the design, structure greatly simplified, reduce costs, save design time, in addition, use self-lubricating bearings can improve the mechanical properties, extend the service life and improve reliability for the significant effect, etc.
4.lubricating oil recycling and environmental protection without waste oil recycling are conducive to environmental protection. since the bearing parts for the machinery industry, the use of a broadly. In order to make the mechanical drive running normally, under a lot of kung fu. Differentiate bearing for rolling bearing and sliding bearing. The general way of sliding bearing in high load movement, foreign bodies, interfuse, temperature conditions, oil supply and imperfect maintenance cases, can lead to hair. Like this usually can't use harsh conditions of sliding bearing, solid inlay type of self-lubricating bearing metal wear resistance, resistance to hair, play the performance of the bearing, mechanical high-performance and free maintenance.

Using the matters needing attention

1.where possible, as far as possible when the design adopts the standard specifications;2. The assembly time please note surface had a foreign body.

3. after use of the sliding surface, the surface is caused by the formation of the solid lubricant oil film in the black or colored phenomenon, please don't scrub, used as usual;

4.before assembly, if to grease in a ring, can be shorter running-in period, for mechanical operation, operation;

5.assembly should be pushed slowly when it is strictly prohibited, so as not to damage the bearing and deformation caused by; A different part of the

6.when the design should choose the appropriate material, in order to improve the mechanical properties, extend the service life of bearing;

7.in high load-bearing, reciprocating motion, recommend the use of screw fixation;

8. in freshwater, seawater, and at sea, it is recommended to use stainless steel or chrome-plated surface of grinding axis.

Bronze Bearings Alloy Material

Bronze Bearings Material composition and properties

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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