Anti-Wear Low Friction Coefficient Bronze Sleeve Bushings are precision-engineered components designed to provide exceptional wear resistance and low friction in demanding applications. Made of high-quality bronze material, these bushings are renowned for their durability, reliability, and long service life.
The low friction coefficient of bronze sleeve bushings significantly reduces energy loss and heat generation during operation, making them ideal for high-speed and high-load applications. The material's excellent wear resistance ensures that the bushings maintain their performance and dimensional stability over extended periods of use.
The sleeve design of these bushings allows for easy installation and replacement, minimizing downtime and maintenance costs. Additionally, the bronze material is corrosion-resistant, further enhancing the bushings' durability and lifespan.
These bushings are suitable for a wide range of industries and applications, including but not limited to:
Automotive and aerospace industries: Bronze sleeve bushings are commonly used in precision components such as engines, transmissions, and landing gear systems, where low friction and wear resistance are crucial.
Machine tools and industrial equipment: These bushings are ideal for use in machine tools, conveyor systems, and other industrial equipment where smooth operation and reliability are essential.
Energy and mining industries: Bronze sleeve bushings are suitable for applications in power plants, oil and gas extraction equipment, and mining machinery, where they can handle harsh environments and heavy loads.
In summary, Anti-Wear Low Friction Coefficient Bronze Sleeve Bushings offer a combination of exceptional wear resistance, low friction, and durability that makes them a reliable choice for demanding applications across various industries.

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Material Structure

1. with Pb 0.01~0.03mm
2. Porous bronze 0.2~0.3mm
3. Stainless steel backing 0.7~2.3mm

Technical Data

Specific load capacity (static)	≤ 250 [ N/mm² ]
Specific load capacity (dynamic)	≤ 140 N/mm² at low speeds
Specific load capacity(rotating oscillating)	≤60N/m㎡
Friction value	0.08 to 0.2 µ(dry)0.02 to 0.08µ(hydrodynamic)
Temperature	-200 to +280 [ °C ]
Max. dry running Pv (Short-term operation)	3.6N/m㎡﹡m/s
Max. dry running Pv (Continuous operation)	1.8N/m㎡﹡m/s
Max. speed (dry running)	2m/s
Max. speed (Hydrodynamic operation)	＞2m/s

Characteristics

Low friction coefficient, good anti-wear, good anti-corrosion
Performs well in mid-acid and strong alkaline condition

Availability

Standard cylindrical bushings, flanged bushings, thrust washers and strips are availabe
Special designs are produced at short notice
Lead free type is also available

Material	Stainless Steel Base+Bronze Powder +
Typical Application	the corrosion resistant part in dyeing machinery and ocean industry, etc.
Max Static Load	250N/mm²
Max Dynamic Load	140N/mm²
Max Oscoillation Load	60N/mm²
Max Line Speed	Dry 2.5m/s, Oil > 5m/s
PV Value Limit	Dry 1.8N/mm².m/s,Oil 3.6N/mm².m/s
Friction Coefficient	Dry 0.08~0.20, Oil 0.02~0.12
Mating Axis	Hardness >220, Roughness 0.4~1.25
Working Temperature	-200~+280℃
Thermal Conductivity	40W/mk
Coefficient Of Linear Expansion	11×10-6/K

Our Services

1,We are produce high quality and low price good wear resistance sliding bush supplier
2,Our sliding bush passed the ISO TS 16949 .
3,Under the guidance of Pursuit of the excellence & keep improving.
4,We will do our best to provide the quality products and professional sevices.

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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