Oilless guide elements, specifically graphite self-lubricating bearings, are an innovative solution for applications that require high performance without the need for traditional oil-based lubricants. These bearings utilize the inherent lubricity of graphite to provide smooth, reliable operation without the need for external lubrication.

Graphite, a natural mineral, possesses exceptional properties that make it ideal for self-lubricating bearings. It has a low coefficient of friction, meaning it slides easily against other materials, and it is also highly resistant to wear. This combination of properties allows graphite bearings to operate effectively in a wide range of conditions, from low to high temperatures and under various loads.

The oilless design of these bearings eliminates the need for periodic lubrication, significantly reducing maintenance requirements and downtime. They are also environmentally friendly, as they do not release harmful lubricants into the environment.

Graphite self-lubricating bearings are commonly used in applications such as industrial machinery, transportation systems, and other equipment where smooth, reliable operation is crucial. Their durability, reliability, and maintenance-free operation make them a cost-effective solution for many demanding applications.

Graphite Self-Lubricating Bronze Sleeve Bushings Now Available Online

High-temperature resistant Graphite bronze bushings, Bearings, and Machined Components

Besides the big variety of standard products, we offer custom-made rotation- and milled-parts Graphite Self Lube Bearings.

graphite self-lubricating bearing, lower price, same quality

Graphite self-lubricating bronze bearings are typically used in applications that require a fully self-lubricating bearing material made from copper-based alloys.

Choose from our numerous standard slide and flange graphite self-lubricating bearings in metric and imperial sizes or let us manufacture a customer-specific part according to your exact specifications.

The VIIPLUS graphite self-lubricating bearing does not require oil or grease, instead, a graphite film is formed between the surfaces to ensure reliable performance, mechanical lubrication barrier. Additional functions include grooves filled with graphite and wear plates.

Graphite self-lubricating bearings feature

Graphite self-lubricating bearings are a complete line of self-lubricating bushings that excel when standard lubrication is impractical, including high temperature, high load applications. Graphite self-lubricating bearings are made from a variety of bronze alloys, including: C95400 aluminum bronze, C93200 bearing bronze and C86300 manganese bronze.

• ·Self-lubricated when standard lubrication is inconvenient
• ·Performs well under various loads, types and speed operations
• ·Resists corrosive and hostile environments
• ·Excellent performance at medium to high temperatures up to 600 ° F
• ·Compatible with most viscous lubricants and oil and grease applications

Graphite self-lubricating bearings Characterictics

1. Complete self-lubrication: no oil or grease required

Thanks to the self-lubrication functions, bearings can be used where lubrication is difficult, expensive to use and where grease / oil cannot be used. Excellent lubrication is achieved even at high loads at low speeds.

2. Excellent wear resistance:

Excellent wear resistance is achieved in harsh operating conditions such as high load, low speed, reciprocating, oscillating and intermittent movements in which oil film formation is difficult.

3. Low coefficient of friction: typically from 0.04 to 0.2:

Self-lubrication with specially embedded solid lubricants reduces friction.

4. Large operating temperature ranges from -415 ° to 1100 ° F

Excellent performance is shown in high and low-temperature conditions.

5. Corrosion and Chemical Resistance:

Performance is not affected by water and caustic chemicals.

6. Designed to Exceed Your Requirements:

High precision products with close tolerances.

7. Cost Competitive:

Maintenance, replacement, and end-item downtime cost reduced due to the exceptional service life compared to similar self-lubricating products.

Graphite self-lubricating bearings material

-Bronze with solid lubricant, oilless lubricating

Graphite self-lubricating bearings part size table

Choose your best transportation for your graphite self-lubricating bearings shipment?

1.Ship the graphite self-lubricating bearings By Sea

2.Ship the graphite self-lubricating bearings By Air Air Freight from China

3. Door to Door Shipping from China

4.Courier Shipping from China

Graphite self-lubricating bearings used in the field

The advantages of our company

Universities accurate fast global on-time fast transport

So contact us We have many ways to transport it

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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