Composite Bearings, featuring a Tin Bronze Copper Layer with Sheet Steel Backing, are an innovative solution designed for exceptional performance in a wide range of industrial applications.

The (Polytetrafluoroethylene) composite material offers excellent wear resistance and low friction, ensuring smooth and efficient operation. The Tin Bronze Copper Layer provides additional strength and durability, enhancing the bearing's overall performance.

The Sheet Steel Backing provides robust support and stability, allowing the bearing to withstand high loads and pressures. This combination of materials ensures reliable performance even in harsh environments and demanding conditions.

The Composite Bearings are easy to install and maintain, reducing downtime and enhancing operational efficiency. They are suitable for use in pumps, motors, and other rotating machinery, where smooth and reliable operation is crucial.

Overall, Composite Bearings with Tin Bronze Copper Layer and Sheet Steel Backing offer a robust and durable solution for industrial applications that require high performance and long-lasting bearing solutions.

Slide Bearing Plates & Strips Composite Bearings, Multilayer material type in plate form.

Composite - •tin bronze copper layer sheet steel backing copper layer • tin layer

Long maintenance-free operating life due to low friction
In applications where other materials have shown insufficient operating life bushing Composite dry sliding bearings can be the solution. SKF Composite is specially designed to operate without lubricant and is particularly suited for high load/medium speed applications.
we offers a full range of cylindrical bushings in accordance with ISO 3547 and DIN1494 as well as flanged bushings, thrust washers and strip.

viiplus Composite bearings
offer many features and advantages
such as:
• maintenance-free operation
• very good frictional properties
• high load capacity
• operating temperatures up to 250 °C
• sliding velocity up to 2 m/s
• small operating clearance

Material

Composite dry sliding bearings
combine the mechanical strength of steel
with the low friction of a -based
self-lubricating sliding layer. The intermediate layer of porous tin bronze guarantees a strong bond between the backing and sliding surface and also improves the
dissipation of heat generated during operation. The bearing is available in two versions. One with a sliding layer without any lead. This version has the suffix E. Another
version where the sliding layer contains
a minor amount of lead incorporates the
suffix B. To protect the bearings from corrosion the steel backing is tin-plated. All Composite dry sliding bearings can be machined, except for the sliding surface. However, calibration is possible within certain limits
Main applications 1)
Composite dry sliding bearings are suitable for applications where the load and self-lubrication requirements
are high.

Examples of applications are:

• automotive applications
• materials handling equipment
• home appliances and consumer goods
• textile machinery

Lubrication

The -based sliding surface permits
smooth, low-friction operation without
lubrication or maintenance. During the
running-in phase, part of the covering
layer of bearing bushing material Composite dry sliding
bearings is transferred to the mating surface and forms a physically bonded lubricant film. The presence or continuous supply of
oil or other noncorrosive fluids may be advantageous and improve the performance of these bearings.

Bearing Sleeve Bush Material & Strips Get A quote.

Bearing Bush is also known as bearing sleeve or adapter sleeve. It is widely used in the light industry and is installed for fixing the rotated bearing.
We manufacture strips & plate of bearing bush. Cylindrical bushings (DIN 1494) Self-Lubricating Flat Strips - Metric Sizes Inch Sizes & Customize Length with different thicknesses.Three-layer composite bearing Flat Strips Factory in China, China Sleeve Bushing material Supplier, flat strip plate Wholesale from China | Sliding Bearings material made to order from china

Flat Strips Plate Sleeve Bushing Material

The VIIPLUS range of self-lubricated dry sliding bearings. A composite structure, SF-1 SIMILAR flat strips consists of a carbon steel backing, an intermediate layer of sintered bronze, based sliding lining. From a technical point of view, the product is already widely known and new applications are constantly being identified to take advantage of the high load capacity, the self-lubricated feature and the excellent ratio between cost and performance of the whole range.

Self-Lubricating Flat Strips - Inch Sizes

Self-Lubricating Flat Strips - Inch Sizes catalog including P/N ,Width,High,Length Self-Lubricating Flat Strips - mm Sizes made to order from china.

Strips Area of Use

A dry running bearing with a low coefficient of friction, good wear properties and sliding characteristics. It can be used in both rotary and oscillating applications

Strips Feature

Flat Strips Plain Bearing It is made of high quality low-carbon steel, and sintered and rolled copper alloy as its surface. It has high fatigue strength, load capacity and impact strength.

Strips Structure

Steel bronze powder with /Fibres mixture

1. fibres mixture 0.01-0.03mm, lead free: provides an excellent initial transfer film, which effectively coats the mating surface of the bearing assembly, forming an oxide type solid lubricant film.

2. Sintered bronze powder 0.20-0.35mm: provides maximum thermal conductivity away from the bearing surface, also serves Dryslide structural detailas a reservoir for the -lead mixture.

3. Low-Carbon Steel: provides exceptionally high load carrying capacity.

4. Tin plating 0.002mm: provides good corrosion resistance

Self-Lubricating Multilayer Composite Bushing Life

1). PV Value
PV value is an effective criterion to calculate the service life of sliding bearing. If there is need to prolong the service Life, PV value must be reduced.

2). Ambient Temperature
The higher the working temperature is, the shorter the life of the products would be.

3). Quality of the Mating Surface
Service life self-lubricating can be obviously prolonged if its mating axis is made by alloy steel or is plated by hard chrome and with surface Roughness Ra=0.4~0.63.

Typical Applications

Can meet the demanding criteria for long life and trouble-free performance with or without lubrication.
Automotive: tractors, combines, crop sprayers, earthmovers, and road graders. Specific uses in power steering cylinders, steering gear thrust washers, disc brakes, callipers, pistons, shock absorbers, governor linkage, windshield wiper motor, and tilt gear assemblies…
Office Equipment: photocopy machines, mail sorters, postage meter systems, computer printers, peripheral equipment, automatic printing devices, and mail processing machinery…

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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.

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.

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.

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.