The combination of stainless steel sheet, bronze coating, and (Polytetrafluoroethylene) strips creates a unique material with exceptional properties. This material is available in thicknesses of 1.5mm and 2.0mm, providing versatility for various applications.

The stainless steel sheet serves as the base material, offering superior corrosion resistance, durability, and strength. The bronze coating adds a decorative touch while also providing additional protection against corrosion and wear. The bronze coating can be applied through various techniques, such as electroplating or powder coating, to ensure a uniform and durable finish.

The strips are incorporated into the material to provide lubrication and wear resistance. is known for its low friction coefficient and ability to withstand high temperatures and chemicals. The strips can be embedded or bonded to the stainless steel sheet with the bronze coating, creating a composite material with enhanced performance characteristics.

The 1.5mm and 2.0mm thicknesses of this material offer flexibility for different applications. The thinner 1.5mm option may be suitable for lighter-duty applications, while the thicker 2.0mm version can handle heavier loads and more demanding conditions.

The combination of stainless steel, bronze coating, and strips creates a material that is not only visually appealing but also functionally superior. It is suitable for applications in various industries, including automotive, aerospace, medical, and industrial machinery. The corrosion resistance, lubricity, and wear resistance of this material make it a reliable choice for demanding environments.

Your One-Stop Shop for Premium Stainless Steel 304 bushing strips. Oilless and Self-Lubricating - Bronze Bushings/Bearings, Standard and custom size Bushes made for you. Maintenance-free thus lower your cost.

Stainless Steel 304 Sheet Dimension

1. SS304+Bronze+ Strips Length 1000mm*width 200mm*Thickness 1.5mm

1. SS304+Bronze+ Strips Length 1000mm*width 200mm*Thickness 2mm

Stainless Steel sheet strips of oil-resistant, acid-resistant,alkali-resistant, and seawater resistant. moreover, there is no lead in the PTEE surface layer, and so is particularly fit for bushings in foodstuff machines, alkali flowmeters, pumps motion elements in pharmaceutical machines, printing machines chemical engineering machines, and other ocean industry. This is a triple layers composites bush, the base material being a bronze plate and a film of heat resistant power-filled PTEE being calendered onto the sintered spherical bronze interlayer.

Stainless Steel 304 Bushings Applications

Bushes are suitable for Chemical valve, chemical pump, flow meter, food industry, medicine industry in the corrosion environment.transmission, rotational and oscillating movements. Rod guide for pneumatic and hydraulic cylinders.Attachment lugs of pneumatic and hydraulic cylinders.Conveyor-belt systems, textile machinery, automobiles.

Availability

• Standard cylindrical bushings, flanged bushings, thrust washers, and strips are available
• Special designs are produced at short notice
• Lead-free type is also available

Why Is Stainless Steel Bushings Corrosion Resistant? – Industrial Steel Bushes 304 Vs 316 Stainless Steel Bushings

Low friction and high wear resistance with no lubrication.

Stainless steel bearing uses the or fibers fabric and aramid fiber overlay on metal backings, the fabric has very high load capacity and high accuracy good run with low speed and heavy friction superior performance, widely used in heavy equipment like construction machinery, agriculture machinery.

Metallographic image

Note: the products in the figure can also choose different matrix materials according to different working conditions, such as a bronze substrate (VSB-1b), stainless steel substrate (VSB-1s), and lead-free (VSB-1w) formula products

Technical data

Stainless Steel Backing Sleeve Bushing

Wrapped composite sliding bearing Stainless steel 316 / fibers fabric

Stainless Steel 316 Bearings + Fabric stainless steel-based non-oil lubricated

Viiplus Is A Professional Production Of Stainless Steel Bushing Manufacturers. Bearings and shafts made of stainless steel and are maintenance-free.

Stainless Steel Bushings That Can Withstand Moisture And A Number Of Corrosion Caused By Other Media. We produce bearing made of stainless steel 304&316. Characteristics of high strength, wear resistance, corrosion resistance, and corrosion resistance, etc. Stainless steel backing sintered with bronze powder overlaid with fibers fabric Suitable for dry running, low coefficient of friction, lower wear.

Industrial Steel Bushes 304 Vs 316 Stainless Steel Bushings

304 and 316 stainless steel bearing material is different: corrosion resistance: 316 stainless steel bearing Mo, then 304 stainless steel bearing in the high-temperature environment corrosion resistance is better, so in the high-temperature environment, engineers will generally choose 316 material parts.316 mainly reduced Cr content, increased Ni content, and increased Mo2%~3%. Therefore, its corrosion resistance is stronger than 304, suitable for use in the chemical industry, seawater, and other environments

Typical Applications

This material meets the demanding criteria for long life and trouble-free performance with or without lubrication.

• Automotive: tractors, combines, crop sprayers, earthmovers, 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.

What Is Composite Bearing?

Composite dry sliding bearings are primarily used for bearing arrangements where heavy loads have to be supported and where rotational or oscillating movements are relatively slow.

Where To Use Composite Bearing?

Because of their good sliding properties and compact design, these plain bearings are particularly suitable for bearing arrangements where:
Maintenance-free operation is a prerequisite
There is a risk of lubricant starvation Lubricants cannot be used or are forbidden Space is limited.

Why Choose Composite Bearing?

Maintenance-free operation

No lubrication required ( composite)

Initial lubrication required (POM composite)

Minimum wall thickness, minimum space requirements

Accommodation of heavy loads

Wide range of temperatures

Good sliding properties

Virtually no stick-slip

High wear resistance

Less sensitive to edge loading (POM composite)

No machining required.

Which Sizes Bearings We Can Offer You?

The standard range of composite plain bearings is very comprehensive and covers almost every standard size. This range comprises straight and flanged bushings, thrust washers, and strips.

Sleeve Bearings:

I.D. = inner diameter O.D. = Outer diameter

VIIPLUS Sliding bearing solutions for your applications

Technische Daten

• Wrapped composite sliding bearing

• Carbon-steel / fibres fabric

• Maintentance-free

• Available on request

Properties

• Excellent sliding and wear behavior, especially in case of rotating and oscillating movement, good shock absorption, very high load capacity, no water absorption

Materials

• Support material carbon steel bushings

• Sliding layer fibers fabric bushing

• Support material: Stainless steel and bronze on request

Material Properties

• Specific load capacity static≤ 350 [N/mm2]

• Specific load capacity dynamic≤ 180 [N/mm2]

• Sliding speed< 0.5 [m/s] 1 [m/s] lubricated

• Friction value ***0.03 [µ] to 0.20 [µ]

• Temperature strain– 50 [°C] to + 250 [°C]

• Max. PV-value1.8 [N/mm² x m/s]

Mounting Advice

• The application of an adequate force-fitting mandrel is advisable

Mounting Advice

• Housing ØH7

• Bushing inner-Ø after mountingH9

• Shaft tolerancef7 to h8

Maintenance

• is a dry sliding bearing with glued fibers fabric overlay? Lubrication is therefore not necessary and not allowed.

Range Of Application

• Machine and crane construction, apparatus engineering, agricultural machines, fittings, water pumps, chemical industry

CAPTION:

This sliding bearing type and special dimensions are only available on request

Get in touch ...Send us an online enquiry.You can use our “Enquiry Form” to get in touch with us. One of our sales team will contact you immediately. pragmatic solutions – high-quality products – premium service – fair prices

Hot Tags: stainless steel 316 bearings + fabric made in China, manufactures, suppliers, factory, buy butterfly valve bushing, steel bronze powder bushing, roughneck units bushing, stainless

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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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