Our straight cylinder maintenance-free bronze Gleitlager offers exceptional performance with its self-lubricating properties and low friction coefficient. This innovative design ensures smooth and efficient operation without the need for regular maintenance or lubrication.

The Gleitlager is made from high-quality bronze material, which is known for its durability and wear resistance. Its self-lubricating properties mean that it can operate effectively even in harsh environments or under high loads, reducing the risk of wear and tear.

The low friction coefficient of our Gleitlager helps to minimize energy loss and heat generation, leading to improved efficiency and longer equipment lifespan. This makes it an ideal choice for a wide range of applications, including in loaders and other heavy-duty machinery.

With our commitment to quality and performance, you can trust us to provide you with a reliable and long-lasting Gleitlager solution that meets your specific needs. Contact us today to learn more about our maintenance-free bronze Gleitlager and how it can benefit your operations.

Construction Equipment oilless bushings Parts, We Have Been Serving Companies For Many Years! High Quality. Excellent Bronze Bushing Service. Discover what makes construction equipment bronze bushings parts the best choice to keep your machines running effectively.

Graphite Plugged Bushing - Oilless Bushes Manufacturers & Suppliers

High Quality Graphite Lubricants for Extreme Performance & Demanding Applications.

Bronze graphite self - lubricating bearing

Bronze inlaid bearing is a solid lubrication product with CuSnZn6Pb3 bronze as the substrate and graphite and MoS2 as solid lubricants.Because the density of CuSnZn6Pb3 bronze is higher than that of high force brass, it is very wear-resistant in the case of high temperature and low load.At present, the product has been used in the fireplace door, oven raceway, rubber machinery, light industry machinery, machine tool industry and other low load, high temperature, medium speed occasions.

CuSn6Zn6Pb3 Material composition

CuSn6Zn6Pb3 Material performance

State distribution of graphite self - lubricated bearings

Material features:

can be used for a long time without maintenance;

designed for high static load and dynamic load;

it has a very low and stable friction coefficient and no "adhesion" phenomenon;

dust resistance, corrosion resistance, impact resistance and edge load resistance;

the metal substrate has good shock-absorbing capacity;

can be used in a wide range of temperatures;

suitable for reciprocating, rotating and oscillating situations where startup is frequent

and oil film is difficult to form; very low wear rate, long service life.

The substrate of the VSB solid self - lubricating bearing shall be determined according to the working conditions of the bearing itself.More commonly used materials are colliers brass, tin bronze, cast iron, etc.The embedded solid lubricating materials are mainly graphite and additives. Different additives are suitable for different working conditions.According to the working conditions of the bearing itself, the combination of different metal substrates and embedded solid lubricants can ensure that the bearing can meet the special needs of various working conditions such as temperature, load, movement and medium, and ensure stable and reliable operation.

Characteristics of VSB solid self - lubricating bearings

1.The design is flexible, simple, convenient

wide range of use: oil supply system in the mechanical design is a piece of labor.Time-consuming, the use of solid lubrication bearings in the design does not need to consider the refueling device, fuel device saving.At the same time, for all kinds of special occasions, the solid lubrication bearings can be designed into a variety of shapes to meet the needs of various special occasions, the use of solid lubrication bearings, can greatly reduce mechanical maintenance, oil and other costs.

2. Oil-free can be used:

Due to the linear expansion coefficient of solid lubricant is greater than the metal matrix, so when the solid lubricated bearing, when we started running on the oil film will shift to a grinding and realize self-lubrication, so solid lubrication bearings can be used in the place where is hard to go and can't go or grease, even in the case of low speed and high load, also can have good lubrication effect.

3. Low use cost

The traditional mechanical design, in a certain operating time, want to often come on maintenance, check the oil, the oil supply device was clear, the body itself and the surrounding environment pollution caused by regular gas, result in an increase in maintenance costs, realize self-lubrication, not only can realize the environment clean and tidy, and greatly reduce the cost of the use of lubricating oil.

4. High load and low speed.Can play superior performance:

The solid lubricated bearing is made of centrifugal cast high strength brass as the substrate, which plays the role of bearing load.Self-lubricating, so it combines their advantages.Even in the case of high load, low speed can still play superior performance.

5, reciprocating motion

shaking motion, starting and stopping frequently and other places where the formation of oil film is difficult, can play superior wear resistance:

The arrangement principle of solid lubrication bearing lubricant is to ensure that there is a lubricant effect on each part of the grinding part in the process of operation, so the arrangement of lubricant must be determined according to the direction of movement of the grinding part.

6. Superior resistance and corrosion resistance;

The lubricant of solid lubricated bearing is made of wear-resisting materials such as graphite and PTEE with special formula, it has stable molecular structure, metal matrix can be selected according to different metals with different resistance and corrosion resistance, so the solid lubricated bearing has superior resistance and corrosion resistance.

7. The product cost is more competitive. Compared with similar products, the product has a long working life and requires little maintenance.

Alloy material

Graphite self - lubricating bearings used in the field

Our mode of transportation

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.