ROHS compliant straight steel (Polytetrafluoroethylene) sleeve bushings with flanged bearings and lead-free washers are designed for applications requiring high chemical resistance, low friction, and environmental compliance. These bushings feature a steel outer shell for durability and a lining for smooth operation. The lead-free washers ensure compliance with environmental regulations and provide a secure fit.

The LBM (Loose-to-Bore Match) tolerance specification refers to the clearance or interference between the bushing's inner diameter and the mating shaft or bore. This tolerance ensures proper installation and function while minimizing wear and friction. The specific LBM tolerance values depend on the size and series of the bushing, and should be referenced in the manufacturer's specifications or catalog.

The flanged design of these bushings allows for easy installation and secure positioning within the application. The lining provides excellent chemical resistance and low friction properties, ensuring smooth and consistent operation.

Please note that the exact tolerance values and technical specifications may vary depending on the manufacturer and specific application requirements. It is important to consult the manufacturer's catalog or specifications for detailed information on the LBM tolerance and other relevant parameters.

composite sliding bushing is one of the most common bushing materials used worldwide due to its numerous advantages. Due to its thin wall thickness even at bigger diameters, it can be easily used for applications that do not allow a lot of bearing space, yet it delivers a very high load capacity as well as one of the lowest friction values among all bushing materials – and still being maintenance-free!

Composite dry sliding bearings– maintenance-free and space-saving,Plain bushings composite metric size PCM B Bore diameter 3 mm – 300 mm Self lubricating bearings –200 to +250 °C,inch size bushing also available: PCZ .. B 0,125 – 7 inch size oilless bushing made to order from china.

Cylindrical bushing, sliding stripes,

...more than 50 pcs. available

Price after login

1. Inner dimension

2. Outer dimension

3. Length

The composite bushing belongs to the family of coated or split bushes. It is produced according to a DIN standard, which means that ID and OD and their tolerances are set in an international standard. The bushings are manufactured from a plate material, which consists of a support material, in this case steel. It is coated with in a sintering furnace using bronze powder as the bonding agent between and steel. Sintered bronze plays a very important role for this material, as without it, would easily detach from the support material.

Material:

Steel Back + Porous Bronze Sinter + + Lead

■Lubrication-free
■Corrosion resistance
■Resistant to dust and dirt
■Small friction coefficient

composite sliding stripes Technical Data

composite Thrust Washer

Sliding Bearings Characteristics

The important characteristics of dry sliding bearings
composite bushes include
• freedom from maintenance
• no lubrication required
( composite)
• initial lubrication required
(POM composite)
• minimum wall thickness, minimum
space requirements
• can support heavy loads
• wide operating temperature range
• good sliding properties
• practically without stick-slip
• little wear
• insensitive to edge loads
(POM composite)
• no machining required

Which bronze bushing manufacturer is professional? How to choose a reliable manufacturer?

Among the many different types of bronze bushing manufacturers, if you want to choose a professional, reliable and trustworthy manufacturer, you must understand the production and processing strength and production and processing technology guarantees of different manufacturers, especially through comparison and judgment through various factors. Choose a few more manufacturers for rational comparison, so as to narrow the selection range and avoid blindly selecting manufacturers and affecting the quality and function of production and processing.

1. Compare the manufacturer's service situation

To select a bronze bushing manufacturer, in addition to considering the manufacturer’s production and processing technology level, it is also necessary to determine the manufacturer’s specific service situation and understand the manufacturer’s production mode and service standards to determine wh the manufacturer is worthy of cooperation.

2. Determine the quality of processing and production

If you want to choose a professional, reliable and trustworthy bronze bushing manufacturer, it is recommended that you not only need to understand the manufacturer’s production and processing scale, but also determine wh the manufacturer’s production and processing technology is mature and wh it has a complete production and processing line. In terms of after-sales service guarantee Wh they are comprehensive, these various issues must be rationally considered and compared.

3. Understand the manufacturer's production scale

If you want to know which manufacturer is trustworthy, you can understand the professional production level by comparing the situation of different manufacturers. It has a good production advantage in the production and processing process. By determining the manufacturer's production scale and service guarantee, you can understand the specific situation of the copper sleeve manufacturer.

Bushings - Plain Bearings - Sleeve Bearings Type:

1. Bushings

2. Flanged bushings

3. Thrust washers

4. Self-lubricating Bearing strip

Composite Self-Lubricating Bushings / Plain Bearings Housing & Shaft Bushes Tolerance

VIIPLUS CHINA BEARINGS produces only Self-lubricating Bearings for a variety of applications, giving our customers solutions advantages over other bearings.

QUALITY / ISO 9001 Oilless Resin Sliding Materials Manufacture Standard Components for Sliding Bearings Material

Tolerances Bushing Products Size

OUR BUSHINGS ARE UTILIZED ON A GLOBAL SCALE

Bushings are selected based on the velocity and the applied load. Maintenance-free bushings do not require additional lubrication to operate.

Bushing Bearings offers a variety of metal bushings including brass bushings, steel bushing, & bronze bushings.

If you already know which type of metal bushing is right for your application, you can quickly navigate to it below for more information:

DU coated bushing - Oiles Bush,Oilless Bearing,Bronze Sleeve Bearings | Products & Suppliers | China composite plain bearings

Description:OILLESS BEARINGS INDUSTRY Glide bearing is a self-lubricating bearing material that consists of a high-quality bearing bronze with pockets filled with solid lubricant and a thin film of solid lubricant over the bearing surface to aid the running-in process. Viiplus self lubricating bearings maintenance

Self-lubricating bushings strip plate sheet offer very good wear and low friction performance over a wide range of loads, speeds and temperatures in dry running conditions ...

Get access to VIIPLUS bearing drawings Ask for a quote Start your project With an Application Engineer.

Technical Data - Metric Steel Back + Porous Bronze Sinter + + Lead

The ideal plain bearing for your requirements:

Special productions made from VIIPLUS strips are manufactured using precision cutting and sheet metal working. A wide range of different shapes and dimensions can be manufactured from VIIPLUSmaterials, for example:

• thrust washers in special dimensions

• thrust washers with complex geometries

• thrust washers with any inside diameter and any outside diameter up to 230 mm

• thrust washers in other designs such as counterbores, notches or lugs

• half-washers and washer segments

• strip cuts

• other strip designs, e.g. with notches or groove

• slide path coverings

Special productions made from VIIPLUS strips are used in hydraulic applications and compressors, for example.

Other special parts made from VIIPLUS strips

• bent parts, e.g. angles, half-shells, U-profiles, rails

• bearing shells

• spherical sliding elements

• half-shells with side elements (welding ensures firm substance-to-substance bond)

• drawing parts, customer-specific components

Advantages of special productions made from VIIPLUS sliding strips

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.