The flange oilless sleeve bushing with graphite die bearings is a specialized component designed to provide exceptional wear resistance and self-lubricating properties in various industrial applications. These bushings are typically used in high-load and high-speed rotating equipment, such as presses, punches, and other die mold machinery.

The key feature of this bushing is the graphite die bearing material. Graphite is an excellent choice for bearing applications due to its low coefficient of friction and high thermal conductivity. This allows the bushing to operate smoothly and efficiently, even under extreme operating conditions.

The flanged design of the bushing provides additional stability and support, ensuring a secure fit within the machinery. The sleeve-type construction allows for easy installation and removal, making maintenance and replacement a breeze.

The oilless design of this bushing eliminates the need for regular lubrication, significantly reducing downtime and maintenance costs. This is especially beneficial in applications where lubrication may be difficult or undesirable.

The combination of the graphite die bearing material and the flange oilless sleeve bushing design offers a robust and reliable solution for various industrial applications. These bushings are well-suited for high-performance and demanding environments, where precision and durability are paramount.

In summary, the flange oilless sleeve bushing with graphite die bearings is a specialized component designed to provide exceptional wear resistance, self-lubricating properties, and stability in various industrial applications. Its oilless design and graphite bearing material ensure smooth and efficient operation, even under extreme conditions.

Components for Press Dies, Oilless Bronze Bushings Size & Catalog

The first cost-competitive alternative to C93200 (SAE660) bronze bearings.

Owing to the high quality and variability, our oilless bushes are widely used in the automobile, engineering, electrical and consumer goods industries. Quality is the number one characteristic, which our business partners expect from our sliding bearings products. We endeavor to offer more – customer care, technical service, and guidance – which our business partners receive tog with high-quality materials for injection molding.

Oilless solid lubricant embedded bushing is made from strong material and homogeneously embedded with solid lubricant in its body.

It breaks through the limit of general bearing whose lubrication depends on an oil film.

So it is suitable for high temperature, heavy-duty, anti-corrosion, or where oil is hard to be introduced.

It′s performance doubles both on hardness and wear-friction. It is now widely applied in successive Casting Machines,

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Typically there are 3 Standard Types of Bushings:

Sleeve Bearing
Flange Bearing (Double Flange bushing also)
Thrust Bearing (also called a Thrust Washer)
Each type is available as a Plain Bearing, Grooved (Oil or Grease), and/or Graphite Plugged Bearing.

STANDARD BRONZE ALLOYS*C93200, C86300 Bearing made from Cast Bronze and Solid Lubricant Inserts, graphite inserts for temperatures above 250°C, Self-Lubricating / Oil Impregnated, Graphite Plugged Bushing provides self-lubrication that can operate in high-temperature environments. High-Temperature Dry-Running Oilless Flange Sleeve Bearing Bushing. Cost-Effective Solution, Aak a better quote for your part number. Sleeve; Flanged Available

SOLID LUBRICANTS

available high-quality bronze alloys. Embedded in this structure are solid lubricant inserts or plugs, providing continuous lubrication for low friction and wear rates and long service life.

1. Sliding layer with running-in-film
2. Solid lubricant inserts
3. Bronze
Bronze Bearing forms made to order: cylindrical bushes, flanged bushes, thrust washers, sliding plates, customized bearing designs

Graphite impregnated bronze - Bearing Types

Corrosion resistance depends largely on the lubricant, bronze bearing, and mating surface materials. Graphite plugs bronze bearings should never be used where electrolytic corrosion can occur, such as high humidity atmospheres or submerged equipment. In this case, -based plugs are recommended
Oilless Flange Sleeve Bearing Bushing High hardness impregnated brass solid lubrication bearing is improved upon Oilless Flange Sleeve Bearing Bushing by further enhance the hardness of high hardness brass, giving rise to higher load-bearing capacity and better wear-resistant property. The products are widely used in continuous casting rolling machines, mining equipment, engineering equipment, injection-molding machines, etc. Because of its high hardness, it's difficult to machining and finish, it's recommended only for really high load applications.

Material Features

Oilless Flange Sleeve Bearing Bushing, JDB material is made of strong cast bronze based metal with special solid lubricants embedded. The base metal withstands high load and the solid lubricants provide for self-lubrication. Oilless Flange Sleeve Bearing Bushing shows excellent performance without pre-lubrication under conditions of extreme high/lower temperature with low speed. This material provides a maintenance-free bearing solution, particularly for high load, intermittent oscillating motion.
Oilless Flange Sleeve Bearing Bushing can be applied under dry, high temperature, high pressure, corrosive, water, or other chemical environments when no oil can be introduced.
Oilless Flange Sleeve Bearing Bushing is widely be used in automotive product line, water engineering, dam gate, plastic industries, successive casting machines, steel rollers in metallurgy industry, mineral machines, ship turbo generators, hydraulic turbines, and injection molding machines.

Technical Data

Oilless Flange Sleeve Bearing Bushing​ fixing method

When pressing the oil-free bushing, use a vise or punch to press it in quietly. In order to facilitate the press-in, it is recommended to chamfer the end of the inner diameter of the fixed seat, apply a small amount of lubricating oil to the inner diameter of the fixed seat and the outer diameter of the bushing.

Anti-rotation screw/bonding

Note that when the oil-free bushing is prevented from falling off and turning, it is recommended to use the following methods depending on the conditions of use and the environment.

The life of oilless bushings depends on the amount of wear. The calculation of wear amount is very different due to surface pressure, sliding speed, movement pattern, lubrication conditions, the surface roughness of the matching shaft, and other conditions. From the viewpoint that the wear amount is proportional to the load and sliding distance, the following formula is usually used to calculate the wear amount. Please consider it as the standard for selection.
Estimate wear(mm)W=K*1×p×v×T
Wear ratio(k):mm/(N/mm2·m/s·Hr)
Design surface pressure(p):N/mm2
Sliding speed(v):m/s
Friction time(T):Hr-hr

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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