When it comes to ensuring smooth and reliable operation of rotating machinery, the role of bushings cannot be overstated. Among the various types of bushings available, bimetal bushings with steel bronze alloy and customized oil grooves are a popular choice for applications requiring high durability and performance.

Bimetal bushings are constructed from two different metal layers bonded tog, often steel and a bronze alloy. This combination offers unique advantages, including the strength and hardness of steel along with the excellent wear resistance and lubricity of the bronze alloy. The result is a bushing that can withstand heavy loads, resist wear, and maintain its performance over extended periods of operation.

One of the key features of bimetal bushings is the inclusion of oil grooves. These grooves are precision-cut into the bushing's surface and serve as channels for lubricant to flow. As the rotating machinery operates, the lubricant is drawn into the oil grooves and distributed evenly across the bushing's contact surfaces. This helps reduce friction, wear, and heat generation, further enhancing the bushing's performance and durability.

The ability to customize the oil grooves in bimetal bushings is a significant advantage. By adjusting the groove design, depth, and spacing, the bushing can be tailored to meet the specific requirements of the application. This ensures that the bushing will provide the optimal level of lubrication and wear resistance for the given operating conditions.

In summary, bimetal bushings with steel bronze alloy and customized oil grooves are an excellent choice for applications requiring high-performance bushings. The combination of the bimetal construction and precision-cut oil grooves provides superior strength, wear resistance, and lubricity, ensuring smooth and reliable operation of rotating machinery.

Custom Steel Bronze Alloy Plain bearing Bimetal Strip Bi-metal plate & Bimetal strip

Metric bearings and imperial bushings made to order: standard bushing forms in special dimensions, half-bushings, special shapes obtained by stamping or deep drawing, customized bushing designs.

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

Types of Oil Grooves for bimetal bushings & Initial pre-lubrication at assembly is required.

CuSn6.5P Plain Bearing Strips Bimetallic Material Or Bronze Lead - Free Series

Bimetal bush is a cost saving self lubricating bearing for rotary or Translatory movement between mechanical parts.. This type sliding bearing including engine bearing, con rod bushing truck roller bearing and other type oilless bearing.We are leading Manufacturers of Bimetal Bearing, Bronze Bearing, Sliding Bearing,Bush Bearing, Linear Bearing in CHINA.

Bimetal Strips & Bearings - Bearings for Connecting Rods Bimetal bushing bimetal plate strip flanged

Bimetal bushing,Composite steel bronze CuSn6.5P JF bimetal plate strip-Oilless Slide bearings Manufacturer

The detailed information JF series material, also known as bimetallic material or copper lead steel belt, is a steel and copper alloy product with low carbon steel plate or steel coil as the matrix material and surface sintered copper alloy. Different copper alloy materials are suitable for different working conditions. According to the different grades of surface copper alloy, it can be divided into high lead series, lead-containing series and lead-free series.

Technical Data

Bimetal Bushing Application

Bimetal Bushings are widely used in various parts of automobile industries such as engines, transmission cases, vehicle chassis, steering knuckle, trunnion shaft, leaf spring, motorcycle clutches, wear plating of gear pumps,as well ashoisting machines, etc.
It is backed with high quality low carbon steel with bronze alloy sintered on its surface. To effectively decrease abrasion, its alloy surface can be machined with ball shaped oil pockets for easier oil storage. When necessary, an anti-corrosion coating can be plated on the steel back. It can be applied to conditions of mediate load with mediate or high running velocity and conditions with enormous impact load. Such as internal combustion engine bearing,connecting rod bearing, rock arm bearing, slide plate of oil gear pump and etc.

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Bushings,Lubricated Bearings,Composite Bearings,Metal Bearings,Compressor Bearings,Metal-polymer,Filament Wound,Plain Bearings,Flange Bearings,Polymer Bearings,Flange Bushings,Pump Bearin

gs,Flanged Bushes,Thrust Plates,Industrial Bearings

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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