Our company offers a comprehensive range of graphite plugged brass bushings, specifically designed for continuous casting applications and precision machining needs. Available in various inch sizes, these bushings are crafted from high-quality brass material and feature graphite plugs for enhanced performance.

The graphite plugs within the bushings provide excellent lubrication and wear resistance, reducing friction and heat generation during operation. This ensures smoother and more efficient operation, while also extending the bushings' service life.

Our brass bushings are precision-machined to meet strict tolerances and specifications, ensuring a perfect fit and optimal performance in your continuous casting equipment. Wh you need bushings for molds, dies, or other critical components, we can provide a solution that meets your specific requirements.

Our commitment to quality and precision is unmatched in the industry. We use state-of-the-art manufacturing techniques and rigorous quality control measures to ensure that every bushing we produce meets the highest standards of performance and reliability.

If you're looking for a reliable supplier of graphite plugged brass bushings for continuous casting and precision machining applications, contact us today. We'll work with you to develop a custom solution that meets your unique needs and helps you achieve optimal performance in your industrial operations.

Graphite Plugged Bushings

Solid lubricant sliding bearings MADE IN CHINA,Plugged Graphite C86300 SAE 430B /C93200/C95400 bronze solid lubricant sliding bearings are made of solid bronze with pre-integrated solid graphite lubricant. Their load limit is considerably higher than standard sliding bearings, where lubrication is dependent upon there being a film of oil. These bearings are used with heavy loads, in anti-corrosion applications or if it is very difficult to obtain lubricant. These bearings perform twice as well due to their strength and wear-resistance. They are generally used in casting machines, in the mining and shipbuilding industries, in turbo generators and hydraulic turbines and for injection-moulding machines for the plastics processing industry.

We are leading manufacturer and supplierof Graphite Plugged Bronze Bushes from china.Plugged graphite bronze bushing is a CuZn25Al6Fe3Mn3 brass alloy showing good physical properties and casting capability as well as good corrosionresistance in air, fresh- and sea water environment. The surface is machined with a uniform pattern of holes filled with solid lubricant.Products of JDB-50 selflube series are applied in continuous casting lines,rolling machines, casting equipment, ships, steam turbines, etc.

Solid self-lubricating bearing with graphite plug insert | Graphite copper sleeve bushings

Bearingswith Solid Graphite Lubrication. Various material specifications, standard and special shapes are also available.

Graphite lubricant column has good oilless self-lubrication effect, because the copper sleeve or wear-resisting skateboard graphite in the process of movement of friction lubrication column due to the friction heat, because the expansion coefficient is larger than the copper alloy, so can produce dust, dust is evenly distributed on the copper pieces or wear-resisting block, thus for the lubrication performance of graphite lubricant column had wear-resisting effect.

• Inch Sized Bushings

• Metric Sized Bushings

Applications

Continuous casting lines,rolling machines, casting equipment, ships, steam turbines, etc.

Material

Brass Bushing

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.

Structure

Shielding pump is with the same shaft of the motor rotor and pump impeller fixed tog, then this group with a shield sets of rotor shielding. The motor stator around around the perimeter of the shielding cover, shielding cover is made of metal, so the power can be passed to the rotor magnetic field. And the whole rotor has been run by the pumping liquid. And shielded by the end of the flange or welding structure to realize static seal. Shielding is actually a set of pressure vessel.
In addition to the shield sleeve, another component is the circulation pipe. The use of pumped liquid for bearing lubrication and cooling, and sometimes for motor cooling are very important.

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

Self-lubricating graphite copper sleeve sizes

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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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