Centrifugal casting is a precision manufacturing process that produces high-quality bronze bushings with exceptional mechanical properties. Our Centrifugal Casting Bronze C86200 / C86300 bushings are renowned for their durability, corrosion resistance, and self-lubricating capabilities.

The self-lubricant feature of these bushings ensures smooth and efficient operation with minimal maintenance requirements. This makes them ideal for use in a wide range of industrial applications where high loads and speeds are encountered.

We offer customized sizes to meet the specific needs of our customers. Wh you require standard or non-standard bushings, our team of experts can design and manufacture bushings that perfectly fit your equipment and applications.

With our advanced centrifugal casting technology and commitment to quality, you can trust us to deliver reliable and long-lasting bronze bushings that meet your exact specifications. Contact us today to discuss your requirements and learn more about our Centrifugal Casting Bronze C86200 / C86300 bushings.

Centrifugal Casting Bronze C86300 Bushings Diameters Concentric Tolerances Dimensions

Bronze bushings internal spiral "double loop" with oil groove

Our graphite bronze bushing can provide customers with a complete mechanical lubrication system. Our graphite is oil-less, self-lubricating, and designed for long life. This insures less down time and eliminates problems caused by high and low temperatures.ALL SHARP EDGES ARE TO BE REMOVED.

Plain Bearings & Self-lubricating Bushings | viiplus Surface Engineering| Metal-Polymer Bearings

Engineering Machinery The various sliding bearings of VIIPLUS BEARINGS are widely used in the chassis system, body system and hydraulic system of construction machinery and construction machinery. Jf-mp friction welding sleeve is used for supporting wheel, sprocket, guide wheel; The double metal and SF series bushing are used in the arm frame, connecting rod and leg of pump truck. JDB series solid inlay lubrication series are used in movable arm, bucket rod, amplitude modulation mechanism, oil cylinder etc.

With the increasing number of types of bearings

Now the advantage of self-lubricating bearings is obvious The advantages of sliding bearings are obvious

With the increasing number of types of bearings,The application of bearings in our lives will also be more extensive, I believe that the future development of bearings will be better!

Application area

viiplus self lubricatingbearing products are widely used in all industrial fields

Widely used in hydraulic and pneumatic industries, forging machine tool industry, plastics machinery industry, lifting and handling machinery, port machinery, office, fitness machinery, textile machinery, food packaging, filling machinery, chemical machinery, printing and packaging, paper making machinery, automobiles, railways Steam locomotives, shipbuilding industries, presses, metallurgical machinery, construction machinery, etc.

viiplus is a professional bearing manufacturer,
Our goal is to continuously contribute to society through technological innovation

VIIPLUS Bearing Co., Ltd.is one of the entities in China that specializes in the production of self-lubricating bearings, plain bearings, composite bearings, oil-free bearings, dry bearings, and maintenance-free bearings. Its product quality and performance have reached the level of foreign peer companies.

• • Engineering plant

  • Energy facilities

  • Fitness equipment

  • Car

  • Plastic molding

  • Hydraulic Components

  • Logistics port

  • Press forging

  • Agricultural machine

  • Office equipment

  • Food Machinery

  
  

• PV value bearings

• Sized bearings

• Matching seat design

• Matching shaft design

• Bearing life

• Interference bearing..

• Inner diameter after..

• With the gap calcul-..

• Bearing assembly

• Bearing maintenance

• Bearing Inspection..

• Bearing Inspection..

Viiplus Sliding Bearings

Rolled dry sliding bearings ()
Rolled dry sliding bearings (POM)
Rolled sliding bearings (CuSn8)
Solid lubricant sliding bearings
Rotated solid sliding bearings
Bimetal sliding bearings
Rolled sliding bearings with solid lubricant
Special automotive parts
Sintered bronze and sintered iron Sliding bearings
Plastic sliding bearings
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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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