CuZn25Al5Mn4Fe3 Graphite Plugged Bronze Bushings are specifically designed for mine exploiting equipments, where durability and reliability are paramount. These bushings are made from a unique alloy composition of copper, zinc, aluminum, manganese, and iron, which offers exceptional strength and wear resistance. The addition of graphite further enhances their durability, making them suitable for use in the harshest mining environments.

The graphite plugged design of these bushings provides excellent lubrication and reduces friction, ensuring smooth operation even under high loads and speeds. This feature also helps to extend the bushings' lifespan, reducing the need for frequent replacements.

CuZn25Al5Mn4Fe3 Graphite Plugged Bronze Bushings are an ideal choice for mine exploiting equipments due to their superior performance and durability. Wh used in drilling machines, excavators, or other mining equipment, these bushings will ensure efficient and reliable operation, maximizing productivity and minimizing downtime.

Bronze Sleeve Bushings

Bronze Bushing Products made to order from china.Your specialist for bronze bushings.Get a free quote Today! High temperature resistance .Our Bronze Bushings are machined from Continuous Cast bar stock. Depending on the type of Bushing selected, they are offered in C93200 Bearing Bronze (SAE 660) Bushing, C95400 Aluminum Bronze Bushings & C86300 Manganese Bronze Bushing for superior quality and performance.Our standard bearing lines feature metric & inch sizes that are carried in stock. These standards provide off-the-shelf economy for most applications, and may be easily resized, oil grooved, or graphited to meet special requirements.

Sleeve Bearing, Flange Bearing & Thrust Washer. Each type is available as a Plain, Oil or Grease Grooved and Graphite Plugged.

Solid Bronze Metallic CuZn25AI5Mn4Fe3 Plug Graphite Cast Bronze Bearings Solid Bronze Lubrication

Solid Bronze Metallic Self-lubricating Bearings nCast Bronze Bearing with Graphite Plugs

Material:CuZn25AI5Mn4Fe3

High strength brass, chemical formula is ZCuZn25Al6Fe3Mn3, mechanical properties are zinc content is different, mechanical properties are not the same, pressure processing properties have good plasticity, can withstand cold and hot processing.
Alloys consisting of more than two elements are called special brass.Such as aluminum, lead, tin, manganese, nickel, iron, silicon composed of copper alloy, high strength brass is one of them.High strength brass has strong wear resistance, high strength brass high strength, hardness, strong resistance to chemical corrosion.Also cutting mechanical properties are very superior.High - strength brass is often made into manufacturing plate, strip, bar, pipe, casting parts and so on.

Chemical composition

The chemical formula of high strength brass is ZCuZn25Al6Fe3Mn3, containing about 65% copper and 24% zinc.Aluminum improves the strength, hardness and corrosion resistance of brass.There are three kinds of microstructure of brass at room temperature: brass containing less than 35% zinc.
Pressure working property
High strength brass has good plasticity, can withstand cold and hot processing, but in forging and other hot processing easy to appear medium temperature brittleness, the specific temperature range varies with the content of Zn, generally between 200 ~ 700℃.Therefore, the thermal processing temperature should be higher than 700℃.

Mechanical properties of

The mechanical properties of high strength brass vary with their zinc content. For solid brass, b and increase with the increase of zinc content.Therefore, the copper zinc alloy containing more than 45% zinc has no practical value.Standard high strength brass brinell HB > 200, compressive strength > 600MPa, elongation > 10%.

Application field

Colliers brass application is very extensive, the casting made of bearing and bushing, domestic now mainly made of high strength brass for matrix solid lubrication oil-free bearings (hereinafter referred to as solid embellish bearing), is to use brass Gao Ligao strength as matrix, and embedded radial arranged orderly cylindrical polymer filler for friction materials (general graphite, molybdenum disulfide, , such as oil lubricant), its superiority lies in its made of copper alloy and non-metallic antifriction material has the respective complementary advantages, not only has high bearing capacity, and break through the boundaries of generally depends on the oil film bearing grease lubrication, achieve no oil lubrication,The embedded solid lubrication is easy to form the lubrication film, which greatly improves the friction and wear performance, and is stable, reliable and cost-effective.Compared with compound oil-free bearing, it has the advantages of good machinability, high precision, strong bearing capacity and good wear resistance.The self-lubricating guide bush guide can be used in many fields such as: engineering machinery joints, such as excavator, mining scraper, the rotating drill, concrete pump truck, rock drill machine, hoist, port cranes, etc., and metallurgical machinery casting machinery, water conservancy machinery, transportation machinery, rolling mill, bottle blowing machine blown film machine, injection molding machine cross clamping differential, tire vulcanizer, trailer balance beam, vacuum switch, etc.

Structure Characteristics and Applications

VSB-50 Solid Lubricating Bearing is produced by strengthening brass that has good physical performance and good capability for casting. What's more, the brass material has pretty good anti-erosion abitity in air, fresh water and sea water. The surface is regularly and finely machined with sockets in which particular solid lubricant is filled. The product is widely used on consecutive casting and rolling machines, mine-exploiting equipments, ships, steam engine, etc.

Solid Lubricant Casting Aluminum Bronze Bearings Bushings

SOLID LUBRICANT SLIDING BEARINGS 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 self-lubrication. The bearing shows excellent performance without pre-lubrication under conditions of extreme high/low temperature with low speed. This material provides a maintenance-free bearing solution, particularly for high load, intermittent of oscillating motion.

Chemical Compositions

Availability

Bearing forms available in standard dimensions
· Cylindrical bushes
· Flanged bushes
· Sliding plates

Bearing forms made to order: standard forms in special dimensions, thrust washers, flanged thrust washers, half-bearings, special shapes obtained by stamping or deep drawing, customized bearing designs

This kind of bearing can be applied under dry, high temperature, high pressure, corrosive, water or other chemical environments when no oil can be introduced. It is widely used in automotive products line, water engineering, dam gate, plastic industries, successive casting machines, steel rollers in metallurgy industry, mineral machines, ships, turbo generators, hydraulic turbines and injection molding machines...Products are widely used in continuous casting machines, mining machinery, ships, gas turbines and so on.Hydraulic Cylinder Casting Bronze Flange Bearing With Solid Lubricant

• China Bearing Technologies

• Your recognised global partner for sliding bearing applications.

• Working tog to create solutions for the most demanding bearing 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.

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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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