Our customized size self-lubricating plain bearing is designed to meet the specific requirements of various industrial applications. Manufactured in accordance with DIN 1494 and ISO 3547 standards, this bearing ensures high performance and durability.

The use of (polytetrafluoroethylene) as the primary material provides excellent wear resistance and friction-reducing properties. This self-lubricating feature means that the bearing requires minimal lubrication, reducing maintenance costs and downtime.

The customized size option allows us to tailor the bearing to fit your specific needs, ensuring a perfect fit and optimal performance. Wh you require a standard size or a unique dimension, we can provide a solution that meets your requirements.

In addition to its functional benefits, our customized size self-lubricating plain bearing also offers excellent corrosion resistance, making it suitable for use in harsh environments.

Overall, this bearing is a reliable and cost-effective solution for a wide range of applications, including machinery, equipment, and other industrial uses. With its compliance to DIN 1494 and ISO 3547 standards, you can be assured of its quality and performance.

Self Lubricating Bushing Plain Bearings

VIIPLUS is a professional supplier of self-lubricating bearings in China.Set good quality and service as one.Size customizable.

Product introduction

- 1 d hydraulic bearing. Is on the basis of - 1 p combined with the oil cylinder and the working principle of the shock absorber and design a new type of material, under the condition of no oil is more wear-resisting, in addition to the product has the advantages of - 1 p, especially suitable for reciprocating force frequent tendency of big occasions. Its performance is similar to Metal-Polymer Low Friction Plain Bearings, at present the product gradually replace - 1 p products, suitable for car, motorcycle shock absorber and a variety of hydraulic cylinder, etc.

-1D Self Lubricating Plain Bearings'Technical data

Metallographic image

Note: figure in the product can also according to different working condition choose different substrate materials, such as: bronze substrates ( - 1 b), stainless steel substrate ( - 1 s), and lead-free (1W), and other products.

Application field

Agricultural machinery, tractors, combine harvesters, crop sprayers, bulldozer, grader, etc;Auto industry: the power steering pump, steering thrust pads, brake disc, shock absorber, door hinge, wiper, chairs, illustrates, air valve and electromagnetic pavilion, etc.;Office business machines, photocopiers, fax machines, printers, E-mail processor, etc.;Hydraulic components and valves, gear pump, ram pump, vane pump, ball valve, butterfly valve, cylinder, cylinder and other hydraulic components, etc.;Household appliances: refrigerators, air conditioners, vacuum cleaners, sewing machine, washing machine, microwave oven and fitness equipment, etc.And other logistics machinery, packaging machinery, textile machinery, port machinery, mining machinery, forest machinery and all kinds of engineering machinery and equipment.

Chemical properties

- 1 d polymer surface resistance to chemical corrosion, so its corrosion resistance mainly depends on the steel back of plating and appearance. The steel back of tin or copper plated surface, can effectively prevent atmospheric corrosion; If you work in the corrosive medium, the steel back can be galvanized, etc.

Wear-resisting performance

1) "running-in stage: surface layer mixture to dual surface fill the dual surface depressions, and formation of transfer film, at this point, the friction coefficient is bigger, material wear faster.
2) "stable" wear stage: after running-in friction into , the friction between the low and stable friction coefficient, low wear rate of materials smoothly.
3) a "dramatic" wear stage: porous lubricant consumption of pore, the friction interface can't get enough amount of lubricant. Bad lubrication between friction surface, the friction coefficient rising rapidly, material grinding rate dramatically fast, until 70% bronze exposed, 1 life close to the end.

The main factors influencing the life span

1) the influence of PV value
PV value is to determine the wear life of- 1 effective index. If required longevity, PV value must be reduced.
2) the influence of ambient temperature
The higher the temperature, - 1 the shorter service life.
3) dual effects
Dual USES alloy steel or hard chromium plated shaft, surface roughness Ra - 0.4-0.63 range, - 1 bearing service life can be improved significantly.In addition to standard products show in the catalogue, you can also provide non-standard products according to customer's requirement or order.

-1series normal metric bushing

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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