Precision parts, such as sintered tin-lead bronze alloy bimetal steel bushings with a split joint and flanged design, are crucial components in various industrial applications where high performance and durability are essential. These bushings are constructed using a unique bimetal process that combines the outer steel shell with an inner lining of sintered tin-lead bronze alloy.

The sintered tin-lead bronze alloy provides exceptional wear resistance, ensuring that the bushings can withstand heavy loads and high-speed operations with minimal wear. The alloy also exhibits good corrosion resistance, making it suitable for use in environments with moisture or chemicals.

The split joint design allows for easy installation and removal, without the need for dismantling the entire machinery. This significantly reduces downtime and maintenance costs, while the flanged design ensures secure fitment and positioning of the bushings.

The steel shell provides structural strength and rigidity, ensuring that the bushings can withstand the rigors of continuous operation. The combination of the sintered tin-lead bronze alloy lining and steel shell creates a bushing that is both durable and reliable, making it an excellent choice for precision applications.

Overall, sintered tin-lead bronze alloy bimetal steel bushings with a split joint and flanged design offer a robust and efficient solution for precision applications requiring high wear resistance and durability.

Bimetal Bearing Bushes

Viiplus is always focusing on the overseas markets, by satisfying the ever-increasing demands of modernization of customers. We could provide products according to the international standards, and could also provide as per the customers' requests. With stable product quality and best level of services, our products have been exported to dozens of countries and regions from the Europe, the United States, and Southeast Asia, etc.

Bimetal bushing is based on steel and sintered with CuPb10Sn10 or CuSn6Zn6Pb3 as a lining layer.

Alloy CuPb10Sn10 Chemical Composition ( % ):

The strongest type of bimetal bushings and widely applicated in so many fields. This type has the best performance within the range of Cu-Pb alloy construcured bushing. Therefor it has a wide application and is mostly suitable for where is middle speed and high impact etc.

Copper-based Alloys Steel backed bronze sintered Bi Metal bushings.Metal Sleeve Bushing,Sliding layer can be machined with lubricating grooves or with grease indents Very good corrosion resistance.Bimetal Bushings has a bi-layer structure of low carbon steel backing and copper alloy sliding layer. This product is lead-free and RoHS compliant. To decrease abrasion, oil grooves can be formed on the surface of alloy. According to the requirement, the steel back can be plated with anticorrosive coating.We are constantly exploring the technical data of Plain Bearing such as customer drawing size tolerance,friction, wear, and self-lubrication in depth, to develop SLIDING BEARINGS products that anticipate and meet the needs of the times. Outstanding services and quality second to none will always be our hallmark. We are also highly aware of the fragility of the global environment that surrounds us.

High temperature resistance Bimetal Diamond-shaped Bushings & Sliding Bearing

Overview

It is based on high density copper alloy of special formula. The alloy surface is rolled to diamond or global oil grooves.

Made of wrapped bronze strip. The bronze is of particular formulation, on its surface incorporated with spherical or diamond shaped indentations or oil grooves. Bimetal Bushing German DIN standard, European EN standard and international ISO standard, etc can be produced and provided.

The product is based on high quality low carbon steel and sintered lead tin bronze alloy CuSn10Pb10.The spherical oil cavity rolled on the surface of the alloy is convenient for storing oil and effectively reducing wear.The steel back can be plated with anticorrosive coating as required.Suitable for medium, medium to high speed, and bearing with large impact load, used for rolling bearing, thrust gasket, internal combustion engine connecting rod piston pin shaft sleeve.

Standard

The VIIPLUS quality of sliding bearing CHINA NATIONAL to be reached the standard of U. S. and GERMANY DIN 1494

DIN1494 standard bimetal bushing supplied by VIIPLUS.Our main oil-free bearing related products sales and services.For DIN1494 bimetallic bushing inquiries welcome to contact or online message

Material: steel + copper alloy (CuSn6Zn6Pb3 / CuPb10Sn10)

The product is based on high quality low carbon steel and sintered lead tin bronze alloy CuSn10Pb10.The diamond hole is rolled on the surface of the alloy and filled with special solid lubricant to effectively reduce wear.The steel back can be plated with anticorrosive coating as required.It is suitable for high temperature, water solution infiltration or other occasions where oil cannot be added or where oil is difficult.

Technical parameters

• The highest PV value is 2.8 N/mm2·m/s for grease lubrication

• Matching shaft hardness 53 HRC

• Oil lubrication 10 N/mm2·m/s roughness Ra=0.16~0.63

• Maximum linear velocity V dry grease lubrication 2.5 m/s highest use temperature 150 ℃

• Grease lubrication 5 m/s lubrication 250 ℃

• Tensile strength 185 N/mm 2 friction coefficient 0.05~0.15

• Hard alloy degrees

• HB 60~90 thermal conductivity 47w/(m·k)

• Coefficient of thermal expansion

• 18· 10-6k-1 maximum bearing pressure P 150 n/was

Bimetal Bushing Size

Available as per drawing or sample, as drawing, Welcome Customized Drawings

Bimetal bushing VIIPLUS provides products with high compressive strength, small friction coefficient, good wear resistance, reduce the cost of machinery manufacturing, its performance has reached the level of similar products at home and abroad.The products are widely used in construction machinery, textile machinery, automobile industry, machinery industry and other fields, especially for the parts that are difficult to oil and can not oil have a good effect, free from oil pollution.
The enterprise takes "pursue excellence, keep improving" as the management objective, and strives to provide customers with first-class products and services.

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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