The Low Maintenance Standard Solution P20 Composite Bearing is a highly reliable and cost-effective solution for various industrial applications. This composite bearing is designed to provide superior performance while requiring minimal maintenance, making it an ideal choice for demanding environments where downtime is critical.

The P20 Composite Bearing features a unique combination of materials that offer exceptional wear resistance, strength, and durability. The composite material is engineered to resist corrosion, chemical attack, and thermal degradation, ensuring a long service life.

The low maintenance design of the P20 Composite Bearing significantly reduces the need for routine inspections and replacements. This not only saves on maintenance costs but also minimizes production downtime, improving overall efficiency.

In addition to its durability and low maintenance requirements, the P20 Composite Bearing also offers excellent load-bearing capacity and smooth operation. It is suitable for use in a wide range of applications, including machinery, equipment, and vehicles that require precision and reliability.

Overall, the Low Maintenance Standard Solution P20 Composite Bearing is a top-quality product that provides exceptional performance and value for money. Its durability, low maintenance requirements, and smooth operation make it a dependable choice for any industrial application.

P20 Self-lubricating bearing

The P20 bearings will be distributed by the orifice according to process characteristics according to ISO 3547 with a sliding wall in advance on the surface in contact with the parts. This design is well suited for ground maintenance of grease or liquid lubrication applications.

P20 Material properties

1. Low adhesion with parts during movement

Low friction and high wear resistance

3. The material has certain clearance and deformation, which can absorb the impurities produced by the movement and thus improve the life.

4 Corrosion resistance can be based on the actual use of galvanized and other solutions.

The stainless steel matrix has good chemical resistance

1. Running-in layer

2. Sliding layer

3. Bearing back

Base material: POM+ bronze powder + steel back + electroplating (copper/tin)

Ultimate dynamic load: 140N/mm

Maximum PV value: grease lubrication: 2.8n /mm. M /s

Friction coefficient: 0.05~0.25

Maximum load P: static: 250N/mm dynamic: 150N/mm

Maximum operating temperature: 130℃

Maximum sliding speed: grease lubrication :2.5m/s

Thermal conductivity: < 42W/m.k

Processing: standard | to figure processing

Available form: bushing sliding block sliding plate bearing bush

A brief introduction to polyformaldehyde (POM) materials

1, with high mechanical strength and rigidity;
2. The Maximum fatigue strength;
3. Good environmental resistance and organic solvent resistance;
Strong resistance to sustained impact;
5. Widely used temperature ranges from -40℃ to 120℃.
6. Good electrical properties.
7. Good recovery.8, with their own lubrication, good wear to hold;9. Excellent dime

Melting point of 175 ° C
Density 1.42 g/mL at 25 °C
Flash point 158 °F storage condition 2-8°C

No oil, composite bearing Bronze Bearing characteristics

You can customize various POM oil-free self-lubricating bearings from us, and design related drawings

Here you can choose the bearing size of the type part, more sizes you can refer to PDF.

Click here for PDF for more product information

Wrapped Composite Sliding Bearing .pdf

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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