The process of re-babbitting bearings and bushes with bimetallic strip CuPb24Sn4 is a crucial step in maintaining and enhancing the performance of industrial machinery. This bimetallic strip, composed of copper, lead, and tin in a specific ratio (CuPb24Sn4), offers exceptional wear resistance and self-lubricating properties.

The re-babbitting process involves removing the worn-out bearing or bush material and replacing it with the new bimetallic strip. This strip is carefully applied to the bearing or bush surface, ensuring a snug and secure fit. The unique combination of metals in the strip ensures that it adheres well to the substrate and forms a durable and reliable layer.

The CuPb24Sn4 bimetallic strip is chosen for its superior tribological properties. The lead content in the strip provides excellent lubricity, reducing friction and wear. The copper and tin components enhance the strip's strength and corrosion resistance, ensuring a long service life.

The re-babbitted bearings and bushes, with their new CuPb24Sn4 bimetallic strip coating, offer several advantages. They exhibit reduced friction and wear, leading to smoother and more efficient operation. The self-lubricating properties of the strip eliminate the need for frequent lubrication, reducing maintenance costs. Additionally, the enhanced durability of the bearings and bushes results in fewer replacements and downtime, improving overall equipment reliability.

In summary, re-babbitting bearings and bushes with CuPb24Sn4 bimetallic strip is an effective way to restore and enhance the performance of industrial machinery. It improves wear resistance, reduces friction, and extends the service life of bearings and bushes, contributing to the overall efficiency and reliability of the equipment.

Engine Bearings, Bushing, and Thusrt Washers bearings - Bearing Parts & Supplies, maintenance-free, made of bimetal bushes Plain Bearing Flange Bushes Bimetallic Strip Cupb24sn4 Jf720 Bronze Lead Steel,

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Re-Babbitting Of Bearings

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Shaft Rebuilding/Manufacturing

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Thrust Pads

MADE IN CHINA bi-metal bearings 720 CuPb24Sn4,JF Bimetal Bearing JF-800 JF-720 JF-700 CuPbSn10 CuPb24Sn4 CuPb30 Steel Lead Bronze Alloys Bi-metal Bush to high-quality low-carbon steel substrate, the surface of the sintered copper-lead alloy as the face, according to conditions and can be processed using all types of sump hole or oil hole in the surface of the alloy layer. The product is suitable for high load low speed of the rocking motion, rotary motion, with a low coefficient of friction, wear resistance, long life, good anti-seizure properties and other characteristics.Straight Bushings, flange bearing, gaskets, sliders, etc., can also be very customized according to the drawings.

Application Features

1. The product has a high resistance to fatigue strength and load-bearing capacity;
2. Can a long maintenance-free operation, stable operation;
3. The product wall copper-lead alloys provide good wear resistance, combined with tank, hole, oil hole and other processing can greatly improve the life and reduce costs;

VIIPLUS SLDING BEARINGS brand of boundary lubrication bearing, grease lubrication bearing because of its own structural features, have very good foreign embeddedness, can be used IN the occasion of dust, maintenance more difficult.All kinds of products are widely used in tractor, combine harvester, bundling machine, cotton picker, etc.

Plain Bearing Strips | Bimetal Strips CuPb30 JF700 Bimetallic material or Bronze Strip

Wrapped Steel Self Lubricating Bearings Oilless Sliding Series

Bimetal bushing Application

Bimetal Bushings Installing Method

1. To keep the bushing, housing dean before installing.
2. The outside surface can be covered with a little grease or oil during installing, which help the process.And please not too much.
3. The bushing should be pushed into housing slowly with mandrel (oil push machine is recommended), it is for hidden to hammer
the part directly.
4. We need your instructions if the housing wall is thin or made from soft metal in order not to destroy it.
5. In order to simply the installment and keep the working layer, we recommend that the shaft should own chamfer and
HRC45/RZZ-3. Gr plating layer is allowed.
6. Grease and Oil are recommended in order to shorten the mending.

Checking Method

1. OD, checked by ring gauge with GO/NO GO
2. ID, checked by plug gauge with GO/NO GO. The common wrapped bushing satisfy tolerance H9.
3. The size of ring gauge & plug gauge are in comply with DIN1494 part 1.

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

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PROJECTWith an Application Engineer

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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