We offer a range of inch-sized sleeve bearing bore bushings specifically designed for shaft housings. These bushings feature a (Polytetrafluoroethylene) lining that provides excellent wear resistance, low friction, and good chemical stability.

The bushings are available in various inch sizes to fit different shaft diameters, and they have a precise internal diameter (I.D.) to ensure a tight and reliable fit with the shaft. The installed length of the bushing is also specified to match the requirements of the shaft housing.

The bushing material is self-lubricating and able to withstand high loads and speeds. This makes it ideal for applications requiring long-lasting, low-maintenance bushings.

Wh you need a replacement bushing for an existing shaft housing or a custom-made bushing for a new application, we can provide a solution that meets your specific requirements. Contact us today to discuss your needs and learn more about our inch-sized sleeve bearing bore bushings with bushings.

High load capacity & maintenance-free composite bushings are ideal for applications with high loads and moderate speeds.

Plain bearings available from stock in many designs and sizes. Technical Support. Types: Cylindrical slide bearings, Collar bearings, Thrust Washers, Slide plates.

Composite Glijlagers | Metal Polymer Composite Plain Bearings

The excellent low friction and high wear resistance performance of Viiplus metal-polymer bearings make them ideal for hundreds of applications in numerous and diverse industries around the world.

Sleeve or flange Type Split Bearing Bushes. lined.
These Sleeve Bush Bearings are widely used in the Machinery Industry
(Inside Diameter x Outside Diameter x Length) or Flange Size )
Measured in Millimeters or inch size

composite bearings, The composite bushings material has a copper-plated sheet steel-backed bearings on to which a 0,2 to 0,4 mm thick porous layer of tin bronze is sintered.

SLEEVE BEARINGS (Inch Sizes) made to order from china For self lubricating bushes nominal sizes & the tolerances please refer to our main bushes catalogue.
Bearing Bore shing Shaft Installed Bearing I.D. Length
Chamfers: Standard flanged steel self-lubricating Bearings are supplied with 15˚/20˚ chamfers
*Other sleeve bushings sizes are available on special orders.
Machinery manufacture steel bronze sleeve bushing,plastic bearings parts Manufacturer in China for series of split bushing, Oilless bearing, Metal Parts
Gearbox Steel Bronze Bushing,Various High Quality Gearbox Bushing Products from China Gearbox Bushing Suppliers and Gearbox Bushing Factory,Importer,Exporter
SLIDING TRACTOR TRANSMISSION GEARBOX BUSHING LAYER SLIDING BEARINGS | VSB-10Product Description Self lubricating plain bearings with sliding layer.
After years of efforts, the company's self-lubricating bearings have served in the various parts of the chassis running gear, body parts, hydraulic components. Including bi-metal boundary lubrication rolling bearing, metal-based self-lubricating bearings and metal-plastic self-lubricating rolling bearings. These bearing materials under high load conditions with excellent wear resistance and anti-dust performance while technology makes self-lubricating bearings

VSB-10 Metal-Polymer Anti-Friction Plain Bearings

ROLLED DRY SLIDING BEARINGS ()
Steel + Bronze Powder + /Fibre

Wrapped Lined (maintenance-free), self lubricated plain or flanged bearings, thrust washer and strip, Carbon steel shell with sintered bronze layer filled with

• Bushing material suitable for lubricated applications
• Self-lubricating bushings offer very good wear and low friction performance over a wide range of loads, speeds and temperatures in dry running conditions
• Anti-friction bearing suitable for linear, oscillating and rotating movements

Material is designed to operate without supplemental lubrication and will perform excellent when lubrication is present. Low friction, low wear rate, good sliding characteristics and very low absorption are a few of the features of this material. VSB-10 bushings will support rotary, linear and oscillating motion.

Carbon Steel + Copper Powder + ( + Pb + Filler)

· Metal-Polymer Composite Self-lubricating Bushing Material
· Steel Back + Porous Bronze Sinter +
· + Lead

Microsection

Bearing forms available in standard dimensions
· Cylindrical bushes
· Flanged bushes
· Thrust washers
· Flanged washers
· Sliding plates

Plain bearings are available as bushes, collar bushes, washers, strips or special designs.
Metric bearings and imperial bushings made to order: standard bushing forms in special dimensions, half-bushings, special shapes obtained by stamping or deep drawing, customized bushing designs

Typical Applications

This material meets the demanding criteria for long life and maintenance free performance with or without lubrication.
Automotive: tractors, combines, crop sprayers, earth-movers, graders and other construction, auto machines, specific uses in power steering cylinders, steering gear thrust washers, disc brakes, calipers and pistons, shock absorbers, governor linkage, windshield wiper motor, tilt gear assemblies...
Business machines: photocopy machines, typewriters, mail sorters, postage meter systems, computer terminal printers and peripheral equipment, automatic printing devices, mail processing machinery...
Hydraulics and valves: pumps including gear, rotary, water, axial piston, and other types, ball, butterfly, poppet steam, and other valves and valve trunnions...
Home appliances: tape recorders, refrigerators, air conditioners, cleaners, polishers, sewing machines, ovens, dishwashers, clothes washing machines...And materials handling, marine engine, packaging, textile equipment, tools...etc.





VIIPLUS Provide all types of electronic samples for customers,Metal-Polymer Composite Bearings Catalog!Bushings,Lubricated Bearings,Composite Bearings,Metal Bearings,Compressor Bearings,Metal-polymer,Filament Wound,Plain Bearings,Flange Bearings,Polymer Bearings,Flange Bushings,Pump Bearings,Flanged Bushes,Thrust Plates,Industrial Bearings

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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