Metal polymer self-lubricating plain bearings with (Polytetrafluoroethylene) composite offer a unique solution for a wide range of industrial applications. These bearings are designed to provide exceptional wear resistance, low friction, and long-term durability, even under high loads and extreme operating conditions.

The combination of metal and composite creates a bearing material that is both strong and lubricious. The metal provides the structural integrity and rigidity needed to support heavy loads, while the composite adds a lubricating layer that reduces friction and wear.

The self-lubricating property of these bearings means they require minimal external lubrication, reducing maintenance costs and downtime. This feature is particularly beneficial in applications where regular lubrication is difficult or impractical.

The plain bearing design offers a simple and reliable solution for rotational and oscillating motion. They are easy to install and can be integrated into various machine and equipment designs.

Our company specializes in the production of metal polymer self-lubricating plain bearings with composite. We use advanced manufacturing techniques and strict quality control procedures to ensure the highest levels of performance and reliability.

Wh you're upgrading an existing system or designing a new one, our bearings can provide a cost-effective and long-lasting solution for your industrial applications. Contact us today to learn more about our products and how we can help you achieve superior performance in your machinery and equipment.

Metal-Ploymer Self-Lubricating Bearings Composite Bushings

Self-Lubricating Bearing & Bushings Materials. Your Partner for Metal-ploymer Self-lubricating BearingsTechnology. Plain Bearing, Bronze bushings-Chinese Manufacturer - Export Wrapped Bronze Bush Sleeve Bushing to the world.

Maintenance-free Bi-metal Polymer Composite Bushings CSB-50 - Bi-metal bronze sintered steel back bushing self-lubricating bearing materials.

Custom Self-lubricating Bushes & Part Manufacturing Service to Your Exact Specification. Quote Now!

Suitable for dry running with a low coefficient of friction.

Low wear rate, good sliding characteristics, the transfer film created will protect the mating metal surface.

Suitable for rotary and oscillating movement, high chemical resistance.

Performance improves with lubrication.

CSB-50 Steel Bronze Powder with /Fibre Dry Bearings.

Self-lubricating bearings CSB-50 Feature

The material has good wear resistance, a low coefficient of friction, corrosion resistance and high chemical resistance.

It is suitable for applications where lubrication is difficult or inaccessible.

The machining requirements of the mating parts are not critical, so these types of materials are widely used in general industry.

Self-lubricating bearings CSB-50 Material Structure

1. /Fibre mixture thickness 0.01~0.03mm, provides an excellent initial transferred film, which effectively coats the mating surfaces of the bearing assembly to establish the self-lubricating feature.

Self-lubricating bearings CSB-50 Technical Data

Self-lubricating bearings CSB-50 Application

This material meets the demanding criteria for long life and trouble-free performance with or without lubrication.

• Automotive: tractors, combines, crop sprayers, earthmover, graders and other construction, auto machines, specific uses in power steering cylinders, steering gear thrust washers, disc brakes, callipers and pistons, shock absorbers, governor linkage, wind shield wiper motor, tilt gear assemblies.
• Business Machines: photocopy machines, typewriters, mail sorters, postage meter systems, computer terminal printers and peripheral equipment, automatic printing devices, mail processing machinery.
• Hydraulics and Valves: pumps including gear, rotary, water, axial piston, and other types, ball, butterfly, poppet steam, and other valves and valve trunnions.
• Home Appliances: tape recorders, refrigerators, air conditioners, cleaners, polishers, sewing machines, ovens, dishwashers, clothes washing machines.
• Materials Handling: Marine engine, packaging, textile equipment, tools.

Automotive applications include steering, shock absorbers, door hinges, reclining seats, seat frames, and solenoid valves; It is widely used in general industry such as gear pumps, vane pumps, piston pumps, air cylinders and hydraulic cylinders; Other applications include material handling machinery, packaging machinery, textile machinery, forestry machinery and household appliances such as air conditioners, body fitting machines, washing machines and refrigerators etc.

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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