Our sintered high-performance bimetal bearing bushes are designed to deliver exceptional performance and durability, ensuring a long lifetime in various industrial applications.

The unique combination of sintered materials and bimetal construction provides unmatched strength, wear resistance, and self-lubricating properties. The sintered process creates a dense and uniform structure, enhancing the bush'ng's overall performance and reliability.

The bimetal design combines two different metals, typically steel and a softer alloy such as copper or tin, to create a bearing bush that offers both strength and lubrication. This allows our bearing bushes to operate smoothly and efficiently, even under high loads and speeds.

The long lifetime of our sintered high-performance bimetal bearing bushes is attributed to their excellent wear resistance and durability. They can withstand extreme conditions and maintain their performance over a long period of time, reducing the need for frequent replacements and lowering maintenance costs.

Wh you need bearing bushes for pumps, motors, compressors, or any other rotating equipment, our sintered high-performance bimetal bearing bushes are the perfect choice. Contact us today to learn more about our products and how they can enhance the performance and reliability of your industrial applications.

Customized High Quality Flange Bimetal Bushing

Bimetal plain bearing bushes consist of a bronze and steel alloy. The soft bronze inner layer can provide good lubricating performance with oil grease, the hard steel back can support the whole bearing well and reduce the cost.

These Bimetal plain bearing bushes are mainly used for bearing arrangements where heavy loads must be supported and where the rotational or oscillating movements are relatively slow.

Bimetal Bushing standard sizes have grease grooves on the work surface. For standard bearings, the steel base is usually copper plated to improve corrosion resistance. The lead bronze layer allows these bearings to be used with relatively long lubrication intervals.
Bimetallic bearings can be fabricated with a thicker layer of lead bronze for applications where the bearing must be machined after installation. The layer material can be tailored to the specific needs of a particular application.

Flanged Bimetal Bushing

· Maximum Operating Temperature Tmax-greased:150 °C

· Maximum Operating Temperature Tmax-oil lubricated:250 °C

· Minimum Operating Temperature Tmin:-40 °C

· Maximum Static Load Psta,max:300 N/mm2

· Maximum Dynamic Load Pdyn,max:140 N/mm2

· Maximum Sliding Speed V-greased:2.5 N/mm2 * m/s

Bimetal sintered Bearing Sleeve high strength self-lubricating bearings

Bimetal sintered bearing is made of common bimetal bearing and flange by sintering. Because its bimetal matrix is low carbon steel and lacks ductility, the sintering process is adopted to meet the demand of mechanical structure with flange structure.

This is a bimetal bearing material in which bronze alloy comprise a two layer structure with a steel backing. This structure, whose mechanical strength is high, can be used under lubricated conditions and high-speed/high-load operation. It can be made from a variety of different materials, depending on the application, use conditions and lubrication.

Sintered SAE797 Layer + Steel Backed + Copper Plating / Tin-Plating(CuPb10Sn10)
Sintered SAE799 Layer + Steel Backed + Copper Plating / Tin-Plating(CuPb24Sn4)
Sintered SAE48 Layer + Steel Backed + Copper Plating / Tin-Plating (CuPb30)
Sintered SAE783 Layer + Steel Backed+ Copper Plating / Tin-Plating (AlSn20Cu)

Bimetal series materials, also known as bimetallic materials or steel backed strips, are made of low carbon steel or steel coil as the base material, and the surface is sintered with bronze alloy steel and bronze alloy products. Different bronze alloy materials are suitable for different working conditions. The surface copper alloy grades can be divided into high lead series, lead series and lead-free series.

Our self-lubricating bearing products have been supplied in chassis walking mechanism, body parts, hydraulic components and other parts.Including bimetal boundary lubricated rolling bearing our self-lubricated bearing products have been supplied in chassis walking mechanism, body parts, hydraulic components and other components.

The performance parameters of bimetal bearings are the national material standards

You can also choose other product structures

Select the type of groove for your bimetal bearing (part)

Select the type of bimetal clasp you want

Overview

The bimetal bushings product is based on high quality low carbon steel, with sintered lead-tin bronze alloy CuSn4Pb24 on the surface. The alloy surface can be processed into oil groove, which is convenient for oil storage and effectively reduces wear.The steel back can be plated with anticorrosive coating as required.This series of products are often used in internal combustion engine spindle and connecting rod bearings, thrust pads, rolling bearings and so on

Application field

Products are widely used in construction machinery used for supporting wheel shaft sleeve, supporting belt wheel shaft sleeve, tensioning wheel shaft sleeve, automotive balance shaft sleeve, steel plate sleeve, steering joint main shaft sleeve, connecting rod shaft sleeve, valve rocker arm shaft sleeve, camshaft shaft sleeve, differential shaft sleeve, thrust gasket, piston pump side piece, gear pump side piece.

Construction machinery: chassis walking mechanism supporting wheel shaft sleeve, towing wheel shaft sleeve, tension wheel shaft sleeve;Automobile industry: balance shaft bushing, steel plate pin bushing, steering knuckle-main shaft bushing, connecting rod bushing, valve rocker arm bushing, camshaft bushing, differential bushing, gearbox bushing, internal combustion engine spindle bushing, thrust gasket;And plunger pump side piece, gear pump side piece, 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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