The Multi-lubrication friction bearing, constructed from rolled CuSn8 bronze, offers exceptional performance in hydraulics applications. The use of CuSn8 bronze, a high-performance alloy, ensures superior strength, wear resistance, and corrosion resistance, making it an ideal material for bearings that require both durability and reliability. The sliding bush, as a part of this bearing, is designed to provide smooth and efficient operation, reducing friction and wear. The multi-lubrication feature further enhances the bearing's performance, allowing it to operate effectively even in challenging environments. This combination of materials and design makes the Multi-lubrication friction bearing in rolled CuSn8 bronze a top choice for hydraulics applications.

VIIPLUS CHINA specifications and drawings offers inch size bearings, bushings and other power transmission bushes components.

Sliding bushing 090 & 090 F- Sealing equipment slide bush type Bushes made to order BK-090, BRM10, COB-090, MBZ-B09, PRM, PRMF, SERIE SBA, SERIE SBB, WB700, WF-WB 700 From china in Standard ISO 3547/DIN 1494 Dimension id f7, D tolerance L ,Multi-lubrication friction bearing in rolled bronze material:CuSn8 bronze design.are suitable for rotational and oscillating movements.All sliding bearing bushing tolerance and size shaft data and assembly instructions in our online catalogue. CUSN8 FLANGE SLEEVE BRONZE SPILT BUSHING.pdfOur sliding bearing bronze bush are constantly subject to further development and technical changes are therefore possible.
Our VIIPLUS Bronze Series bearing series have reliable quality, as well as stable performance, and have been widely used in mines, metallurgy, reaper, textile machinery, body building equipments etc.An initial lubrication with grease is recommended and continual lubrication significantly increases the service life of the friction bearing.

Bronze Bushing Feature:

Maintenance-free operation.
Multi-lubricationable.
Not suitable for dirty conditions.
Shock and vibration resistant.
High permitted load.
Good friction characteristics.
No water absorption.
low play during operation.
Extremely space-saving.

Availability

Bearing forms available in standard dimensions
· Cylindrical bushes
Bearing forms made to order: cylindrical bushes with non-standard dimensions, flanged bushes, sliding plates, customized bearing designs

Bearings Solutions

Bronze bushing is a special wrapped bronze bearing with oil holes,it is a hollow cylindrical component, such as a tube and it is normally bipartite splited, with one, two or even no flange and used for axis elongation. They are parts subject to friction forces through rotation used in lightweight, heavy or super heavy machinery and equipment.
Our viiplus sliding bearings are used in the mining industry, links and excavator loaded in front of the machine.Thin wall bearings are supporting the hydraulic motor on the steering gear used, excavators, gas turbines, winches and other mechanical devices.
"The bearings met expectations and the material composition of the viiplus bronze bushings was all round better suited to the application."
Our customer using plastic bushings on six pivot points in its combine headers, which are designed for cutting crops such as beans.
Instead of using oil-impregnated bronze or rubber-encased bushings, the company opted for VIIPLUS self-lubricating bushings, which are rated for heavier loads, easier to install, less expensive, and longer lasting. They are also better suited to the harsh environmental conditions, since they are completely dry running and dirt resistant.
VSB-22 Bronze Bearings made of CuSn8 with Lubrication Indents
Bronze Wrapped Bearing with Oil Pockets(090 Cylindrical Bushes)
CuSn8 Wrapped Bronze Bearing Diamond Or Ball Shape Oil Sockets

VSB-22 CuSn8 Wrapped Bearings

Wrapped Bronze Bearings (low-maintenance), used for heavy load applications, offered with lubrication pockets, grooves or thru holes, plain or flanged bearings and strip
· Bearing material made of solid bronze strip with indents for lubrication
· Good wear resistance, suitable for rough conditions
· Optimum performance under relatively high loads and low speeds

The self-lubricating bronze bushings are wrapped from a cold formed homogenous bronze (CuSn8) with exceptional material properties. The standard sizes are fitted with diamond shaped lubrication indents in the bearing surface. These indents serve as lubricant reservoirs to rapidly build up a lubrication film at the start of movement and thereafter reduce the running friction. The material is suitable for construction and agricultural machinery applications.

Bronze Bearings and Bronze Sleeve Bushings made of CuSn8 with Lubrication Indents

Microsection

Bushings For Combine Harvester
Technical Data

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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.

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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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