When it comes to cast bronze bushings, the alloys C86300, C93200, and C95400 are commonly used for applications requiring high strength, corrosion resistance, and wear resistance. These bushings, often featuring grooves or grooving, serve as critical components in various mechanical systems to reduce friction, absorb shock, and distribute loads evenly.

C86300 (Manganese Bronze):
C86300, also known as manganese bronze, is a versatile alloy that combines excellent wear resistance with good machinability and formability. Its composition, rich in manganese and tin, makes it ideal for applications where both strength and wear resistance are crucial. Grooved C86300 cast bronze bushings are commonly found in heavy-duty machinery, marine environments, and mining equipment, where they provide a durable and reliable bearing surface.

C93200 (Aluminum Bronze):
C93200, or aluminum bronze, is renowned for its exceptional corrosion resistance and high strength. The addition of aluminum to the alloy gives it a unique combination of properties that make it suitable for use in harsh environments, including seawater and other corrosive media. Grooved C93200 cast bronze bushings are ideal for applications such as pumps, valves, and other components exposed to corrosive fluids.

C95400 (Silicon Bronze):
C95400, also known as silicon bronze, is an alloy characterized by its high tensile strength, good ductility, and resistance to oxidation at elevated temperatures. Silicon bronze bushings, including those with grooving, are often selected for use in electrical applications due to their low electrical conductivity and resistance to arc erosion. They can also be found in industrial machinery where a combination of strength, wear resistance, and formability is required.

In all three cases, the grooving or grooved design of the cast bronze bushings serves several purposes. It can facilitate lubrication, allowing for more efficient operation and reduced wear. Additionally, grooving can also help in the distribution of heat generated during operation, further enhancing the bushings' durability and lifespan.

When selecting cast bronze bushings with grooving, it's essential to consider the specific requirements of the application, including the operating environment, load conditions, and desired service life. The choice of alloy (C86300, C93200, or C95400) will depend on these factors, as well as the availability and cost of the material.

Grease grooves are mandatory for cast bronze bushings bearings as they require high greasing intervals. viiplus can design the right bronze bushings parts groove type system for our clients’ applications. Sleeve or flange size, mm. Therefore, it is also important to understand wh the bronze bushings are greased through the pin or the housing. Greasing points on the housing will require additional grooves and lubricatings holes on the outer diameter. Spiral and “figure of 8” groove systems are among the most common ones.soild bronze bushing bearings are considered as high-maintenance materials.

Slide Bearing - Solid turned bronze bushing, heavy-maintenance, DIN 1850/ISO 4379, Heavy maintenance, groove type or bronze with lubricant plugs embedded

viiplus grooving bronze bushing have a lot of grooving kind, use suitable grooving can produce oil film in the matching parts, so as to better protect the corresponding parts, reduce its friction, reduce loss, improve Solid Bronze Alloy Bearings according to ISO 4379 product life, reduce the maintenance cost of the machine, we have production equipment, and a large number of inventory, can be used for your urgent need or normal consumption,you can contact us for a free quote.

Featrue

• Conventional bearing material for lubricated applications in general engineering applications
• Suitable for oil and grease lubrication

Bearing forms made to order: cylindrical bushes with bronze alloy according to ISO 4379, special parts according to ISO, DIN or customer design, special alloys

Characteristic

Cast bronze bearing is made of all kinds of centifugal cast bronze material with different oil grooves. They are widely used in all kinds of industries such as agricultural machines,cranes,spring bolt,ransmission systems,turning axis and ect.

1. Can work without oil for a long time;

2. It is more suitable for heavy load and low-speed working conditions, with good wear resistance and very low friction coefficient;

3. Suitable for reciprocating motion, rotation, intermittent motion and other occasions where oil film is difficult to form;

4. Corrosion resistance and anti-aging;

5. Suitable for temperature range from -40 ℃ to 300 ℃;

6. Compared with the rolling bearing, the thickness is thin, saving space and suitable for complex situations.

Chemical compositon & Properties

C86300 Manganese Bronze

C93200 Manganese Bronze

C95400 Manganese Bronze

Cast bronze bushing machining copper sleeve from the technical and cost level to provide excellent bearing solutions. Copper sleeve with high bearing capacity, light weight, corrosion resistance and other characteristics, according to the bearing design life and application, we can provide different kinds of alloy materials to meet the corresponding application requirements. As a machined Solid Bronze Alloy Bearings according to ISO 4379
, the tolerance grade of the Solid Bronze Alloy Bearings according to ISO 4379 is much higher than that of the rolled bearings.

Applications

This type of bearing can be used in dry environments, with high temperatures, high pressure, corrosive, aquatic or other chemical environments when oil cannot be introduced. It is widely used in automotive Solid Bronze Alloy Bearings according to ISO 4379 lines, water engineering, floodgates, the plastics industry, subsequent casting machines, steel rollers in the metallurgical industry, mineral machines, ships, turbogenerators, hydraulic turbines and injection molding machines.

With the advantages of lightness, low noise and self-lubricating characteristics, VIIPLUS bearings are widely used in the automotive industry and applications are still in rapid development. Currently, there are more than 50 rings used in each passenger car and more and more traditional needle bearings, sintered bearings are replaced by self-lubricating bearings. In addition to the bearing,

· Steering & Suspension System
· Power Transmission System
· Body System
· Other

·Conventional bearing material for lubricated applications in general engineering applications
·Suitable for oil and grease lubrication

Our Service

1. We can produce non-standard dimensins according to your requirements;

2. Competitive price

3. High quality

4. Customer's drawing or samples accepted

5. Small order accepted

6. Choose the different package to your needs

7. Customized the marks based on your requirment

AVALIBILITY

Bearing forms made to order: cylindrical bushes with bronze alloy according to ISO 4379, special parts according to ISO, DIN or customer design, special alloys

We have many other Solid Bronze Alloy Bearings according to ISO 4379 products, please contact us for more innformation.

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.