Oilless bushes, commonly referred to as graphite-plugged bushings, are mechanical components that are designed to function without the need for lubrication. These bushings are typically made of a metal outer shell with graphite or other self-lubricating material impregnated into the inner lining. Graphite is a natural lubricant that helps reduce friction and wear, enabling the bushing to operate smoothly over extended periods.

When it comes to standard dimensions for oilless bushes or graphite-plugged bushings, these can vary depending on the manufacturer, application, and specific requirements. However, some common parameters to consider when specifying dimensions include:

Outer Diameter (OD): This is the largest diameter of the bushing, measured from the outermost edge of the metal shell.
Inner Diameter (ID): This is the smallest diameter, representing the hole through which the shaft or rod will pass.
Length (L): The axial dimension of the bushing, measured from one end to the other.
Wall Thickness: The thickness of the metal shell, which provides structural support and helps maintain the shape of the bushing.
In addition to these basic dimensions, other factors like tolerances, material specifications, and surface finishes may also be specified depending on the application's requirements.

It's important to note that when selecting oilless bushes or graphite-plugged bushings, it's essential to consult with the manufacturer or supplier to ensure that the chosen dimensions and specifications are compatible with your specific application. This will help ensure optimal performance and durability of the bushings.

Press Forging Low Noise Graphite Metal Plugged Bushings Inch Standard Dimensions

Graphite Plugged Bushings is a type of standard products of our company. It's based on strengthening brass that has good physical performance and good capability for casting. This type of self-lubricating bearing is also called oilless bearing, brass bearing, cooper bushing, solid sliding bearing bushing, oiles bronze bearing, graphite plugged oiles bearing bushing, guide bushes and graphite filled bearing Bushing.

Graphite Plugged Bushings / Bearings Graphite Plugged Bushings are a complete line of Self-Lubricating Bushings that excel whenever standard lubrication is impractical, including heavy load, high temperature applications.

Turned bronze bushing are available in stock sizes or can be manufactured from drawings. Bronze Bushings with graphite is the maintenance-free alternative.

VIIPLIS International Sliding Bearing Made To Order From China domestic Graphite Bronze Bushing. The factory is dedicated TO the technical field of mechanical automation. According TO the drawings provided by the customers, customized GRAPHITE inlaid copper C86300/C86200 manganese bronze sleeve, flange BEARING sleeve, gasket, washer,standard size and inch size are MADE.The whole process of graphite plugged embedded do not need artificial participation, a high degree of automation, effectively reduce the manpower cost, at the same time improve the efficiency of inlaid with Mosaic quality.

VIIPLUS International Sliding Bearings' comprehensive solid bronze alloy bearings and bronze sleeve bushings catalog (sliding bearings catalog)PLUGGED GRAPHITE BRONZE STRAIGHT BUSHINGS FLANGED ... contains detailed specifications structure and composition.

OILES #500 SPB Oilless Cylindrical Bushes (All dimensions in MM)

Press forging machinery

Widely used in all kinds of rotating parts of the machine tool, and sliding table, because the self-lubricating bearings with low friction coefficient and under impact load condition good wear-resisting performance and the performance of self-lubricating bearing greatly reduces the cost of equipment maintenance and prolong the service life, reduces the equipment operation noise at the same time to improve the working environment.

Bronze Sleeve Bushing And Flanged Bearing rotating parts of the widely used in various types of machine tools AND the sliding table, because the self-lubricating bearings with low friction coefficient AND under impact load condition good wear-resisting performance AND the performance of self-lubricating BEARING greatly reduces the cost of equipment maintenance AND prolong the service life, reduces the equipment operation noise at the same time to improve the working environment.

Stamping, punching, industrial, forging manipulator, robot, mechanical arm, stamping forging automation, stamping forging robot and other equipment bushing

Forging presses
Widely used in all types of rotating machine parts and sliding tables due to its low friction self-lubricating bearings and its excellent abrasion and self-lubrication properties under impact bearing, significantly reduces the cost of equipment maintenance and prolongs service life, while reducing equipment operating noise and improving the working environment.

C86300 Manganese Bronze with Graphite Plugs Metric Sleeves INCH Size
Graphited bearings should be soaked in lubricant prior to application. The graphite absorbs the lubricant, which is then transferred to the shaft when heated by the shaft motion. This action provides oil needed to lubricate but not in sufficient quantity to cause leakage at the bearing ends. The oil is re-absorbed by the graphite when motion ceases.

Plug graphiting is accomplished by drilling a rowed, staggered hole configuration through the bearing wall and pressing graphite into these holes and hard baking. The size and number of drilled holes and the number of rows is determined by the bearing length and diameter.

• Inch Sleeves

• Metric Sleeves

• Metric Flanges

• Metric Washers

Solid self-lubricating bearing with graphite plug insert | Graphite copper sleeve bushings

Graphite Plugged Bronze Bushings are all self-lubricating and maintenance free. These bushings are machined out of continuous cast bronze and plugged with solid lubricant plugs. A bushing and it's mating surface should always be seperated by a film of lubricant.Many of VIIPLUS’s components use graphite. Here is what you need to know about it. Graphite is ordinary carbon in a highly unusual form, a two-dimensional crystal. Think of it as a one-atom thick sheet. A piece of graphite is a stack-up of these sheets. A graphite pencil lead feels oily because these one-atom thick sheets are very slippery.

Self Lubricating Graphite Plugged Bronze Sleeve Bushing Plug Graphite Sleeve Bushing

• Wear Plates

• Wear Strips

• Bushings

• Slide Assemblies

• Guide Components

• Inch Sized Bushings

• Metric Sized Bushings

MATERIAL:C86300 Manganese Bronze
C86300 Typical applications include slow speed heavy duty load bearings, gears, cams and hydraulic cylinder parts.continuous cast manganese bronze is a high strength, non-heat treatable copper alloy intended for use in applications requiring a good combination of outstanding wear characteristics and high bearing strength for heavy loads and slow speeds.

Bronze sleeve bearings flanged bronze bushings online www.bronzegleitlager.com for sale

Applications

Sliding Bearings Widely used in hydraulic pneumatic, forging machine tool industry, plastics machinery, lifting transportation machinery, port machinery, office, gym machinery, textile machinery, food packages, filling machinery, chemical machinery, printing and packaging, paper making machinery, automobile, railway vehicle, shipbuilding industry, machinery, metallurgical machinery, engineering machinery, etc.

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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