Our company specializes in manufacturing Oilless Bush #500Sp and C86300 custom-sized graphite bearings crafted from high-quality metal alloy. These bearings are designed to operate smoothly without the need for lubrication, making them ideal for a wide range of industrial applications.

The use of graphite in the bearing design ensures excellent wear resistance and friction reduction, allowing for longer service life and improved efficiency. The metal alloy construction provides superior strength and durability, enabling the bearings to handle heavy loads and demanding operating conditions.

Our custom-sizing capabilities allow us to produce bearings that precisely fit your specific application requirements. Wh you need bearings for a small-scale project or a large-scale industrial operation, we can provide a solution that meets your needs.

Our commitment to quality and precision is reflected in every bearing we produce. We employ advanced manufacturing techniques and strict quality control measures to ensure that our bearings meet the highest standards of performance and reliability.

If you're looking for a reliable supplier of custom-sized graphite bearings made of metal alloy, look no further than our company. Contact us today to learn more about our Oilless Bush #500Sp and C86300 bearings and how we can help you achieve optimal performance in your industrial operations.

Graphite Plugged Bushings

Self lubricating bearings with built in graphite pellets.With us you can order your plug bronze graphite sleeve bushings & flanged bearings according to your own drawings and specifications or you can choose from our large and wide standard selection. In addition, our short lead times and good logistics makes us an efficient and reliable partner.We have a large selection dimensions of plain and flanged bearings for various Areas of use:

The bronze bushings surface can be machined with various of grooves in terms of different work condition.

Custom C86300 Standard Bronze Bushing Bearings

Solid bronze bearings are ideal for applications involving oscillatory movements, both axial and radial. Common Areas of use are:

• Offshore
• Dredging industry
• Mechanical engineering
• Elevators

Provide innovative self -lubricating bearings & solenoid valve, textile bushing solutions | Maintenance-free bearing

Performance

A comprehensive solution -Self - lubricating bearing
Suitable for a variety of applications, our customers use engineering plastics and metal composite bearings.The product offers multiple advantages, such as low friction.Maintenance-free bearings are used in many applications such as electrical switchgear, solenoid valves, textile machines, food processing equipment, traffic controllers, pipe racks and other industrial equipment.

Provide innovative customer self-lubricating bearings solutions
We offer a wide range of standard or custom bearings with superior performance under a variety of loads, speeds and temperatures.For example, garbage truck can choose to have high static load capacity and excellent vibration resistance, non-coincidence, chemical resistance and pollution prevention of maintenance-free bearings.

Technical Data

A World Of Self-Lubricating Bearings Applications

Bushings for Construction Equipment, Boom Link Bushings for Power Shovels, Toggle Link & Guide Bushings for Injection Mold Machines, Steel Mill Equipment, Furnace Dragouts, Drying Equipment, Roasters, Press Dies, Assembly Lines, Hydro-Electric Structures, Winches, Hoisting Equipment, Tire and Paper Mill Machinery and Many Other Industrial Applications.

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.

• 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.