Plain sleeve thrust washers and gaskets play a crucial role in various mechanical systems, providing smooth and reliable thrust transmission while reducing friction and wear. When these washers and gaskets are equipped with a grease-lubricated POM (Polyoxymethylene) plastic liner, they offer even greater benefits in terms of durability, efficiency, and longevity.
POM plastic, also known as acetal, is a highly durable and wear-resistant material that is widely used in demanding applications. When used as a liner in thrust washers and gaskets, POM plastic provides a smooth and lubricated surface that reduces friction and wear between moving parts. This results in lower operating temperatures, reduced energy consumption, and longer service life for the overall system.
Grease lubrication further enhances the performance of POM plastic liners. By regularly lubricating the liner with high-quality grease, you can ensure a continuous and reliable supply of lubricant to the moving parts. This helps to maintain a constant and smooth surface finish on the liner, reducing the risk of scratches, grooves, or other damage that can occur due to friction.
Plain sleeve thrust washers and gaskets with grease-lubricated POM plastic liners are ideal for use in a wide range of applications, including heavy machinery, automotive components, and industrial equipment. They are particularly suitable for applications where high loads, high temperatures, or rapid movement are present, as they are able to handle these challenging conditions while maintaining stable and reliable performance.
In conclusion, plain sleeve thrust washers and gaskets with grease-lubricated POM plastic liners offer significant advantages in terms of durability, efficiency, and longevity. By reducing friction and wear, these components help to maintain smooth and reliable operation of mechanical systems, ensuring optimal performance and reducing the need for maintenance and repairs.

Polymer Plain Bearings, POM thrust washer

Viiplus® manufactures composite thrust washers as standard from and POM type.Steel Shell with POM Plastic Liner - Metal/Polymer Composite Plain Bearings made to order from china.
Your partner for Composite bearings wrapped Bearings, Plastic Bearings,Wrapped Acetal Lined (low-maintenance), oil or grease lubricated bearings, carbon steel shell with sintered bronze layer with a co-acetal polymer layer, plain bearings, thrust washer and strip.Bronze and plastic/polymer washer available upon request,selector bore inch metric size type thrust washers,Plain bearings Low-maintenance and maintenance-free.
Plain bearings are available as bushes, collar bushes,washers, strips or other designs.
Carbon Steel self-lubricating bearings used high quality low-carbon steel plate as base, sintered porous bronze as its interlayer and the Compound of or POM and Lead as its surface.

metal-polymer plain bearing, POM composite POM bushing for automobile, copper and tin plating POM sleeve bush,metal-polymer plain bearing, POM composite POM bushing for automobile, copper and tin plating POM sleeve bush
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

VSB-10 Self-Lubricating Multilayer Composite Bushing

• 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.

1. /Fibre mixture thickness 0.01~0.03mm. It is the contact surface for the rotating shaft. Minute partides of the layer and the sintered bronze material combine to create a solid lubricant film, which coats the shaft.

2. Sintered bronze powder thickness 0.20*0.35mm,A special composition of powdered copper is thermally fused to the steel backing. This contact layer acts as an anchor for the layer and conducts the thermal build up away from the bearing surfaces.
3. Low-carbon steel backing. Setting the foundation of the bushings, the steel back provides exceptional stability, load carrying and heat dissipation characteristics.

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

Products

• Miniature Bearings
• Ball Bearings
• Aerospace Bearings
• Spherical Plain Bearings
• Bushings
• Silverthin Bearings
• Needle Roller 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.

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.