POM (Polyoxymethylene) plain composite bearings, including bushings, units, housings, and thrust washers, are designed to provide exceptional wear resistance, low friction, and long-lasting performance in a wide range of industrial applications.

POM, also known as acetal or polyacetal, is a thermoplastic polymer that offers excellent mechanical properties, including high stiffness, good dimensional stability, and low moisture absorption. These properties make POM an ideal material for composite bearings that require precision and durability.

POM plain composite bushings are used in various applications where rotational or linear motion is required. They are often found in automotive components, machinery, and equipment that requires smooth and reliable movement. The composite material of POM and other reinforcements provides excellent wear resistance and low friction, reducing energy loss and maintenance requirements.

POM plain composite bearing units and housings are designed to provide a complete bearing solution. These units typically include the bearing bushings, housing, and any necessary fasteners or seals. The housings are precision-engineered to ensure proper alignment and fitment, while the fasteners and seals provide secure installation and protection against contaminants.

POM thrust washers are used in applications where axial loads need to be transmitted or supported. They are designed to withstand high compressive forces and provide a smooth, low-friction interface between moving parts. POM's high stiffness and low moisture absorption make it an excellent choice for thrust washers that require precise and reliable performance.

In summary, POM plain composite bearings, including bushings, units, housings, and thrust washers, offer a durable and reliable solution for industrial applications that require precision, low friction, and excellent wear resistance.

Flanged Sleeve Bearing

Plain Composite Bearings Flangeg Bushings Units & Housings Thrust Washers Strips grease-lubricated material made-to-order from china self-lubricating bearing combining dry & mechanical properties of metal & . Cylindrical & flanged self-lubricating bushings.Bearings standard: ISO3547, DIN 1494.Metric bearings and imperial bushings made to order: standard bushing forms in special dimensions, half-bushings, special shapes obtained by stamping, bearings with locating notches, lubricant holes and machined grooves, customized bushing designs.

Wrapped Bushes With Grease Pockets (DIN 1494)

Bushings, thrust washers and strips supplier.Blocks and Thrust Plates ... VIIPLUS bradn bearing material is known by various names such as POM-10 or POM10. Buying a sf-1 bearing from VIIPLUS or its authorized distributors guarantees that you do not receive a counterfeit product. ...POM coated bearing is a standard item of our company. This type self-lubricating bushing has same material structure with other POM bushing. It's also called boundary lubricating bearing,POM bearing,SF-2 oilless bearing,plain sliding bearing and dry bushes.

Boundary lubricated lead-free bearing is improved from black POM.Its performance is the same as the black POM, but the surface does not contain lead, the use of the field can be extended to environmental requirements of the field.At present, the product has been used in imported textile equipment, plunger pump swing position, automobile joystick position and other medium load, medium speed, grease lubrication occasions.

Boundary Lubricating Bearing Material Structure

1. POM 0.3~0.5mm.
2. Porous bronze 0.2~0.3mm.
3. Steel backing 0.4~2.2mm.
4. Copper plating 0.008mm.

Characteristics

· Good load capacity & wear-resistant
· Suitable for linear, oscillating and rotating movements
· Optimum performance under relatively high loads and low speeds
· Lead free bushing can meet environment protection requirement

Availability

Standard cylindrical POM bushing, POM thrust washers and POM strips are availabe

Special designs are produced at short time

flanged bushings Thermoplastic plain bearing POM Bushes Cylindrical standard dimensions Rolled dry sliding bearings Gerollte Trockengleitlager Flanged sliding bearings, standard dimensions POM Bushes

Typical Applications

Self lubricating bearing is widely used in the machine that Lead free is unacceptable, such as textile machines, auto operating parts,auto chassis, forging machine, metallurgical and so on.

Office Equipment:Such as printer bushing,Photocopier shredder bushing,air compressor bushing etc.
Household Applications:such as refrigerator bushing,washing machine bushing,air conditioner bushing,Fan bushing.tv bushing etc.
Self Lube Bearings Product Category SF-2 Boundary Lubricating Bearing

1. POM thickness 0.30~0.50 mm. It provides high wearresistance and low friction even with only minute volume oflubricant are supplied, this bearing surface carries a pattern of circular indents which should be filled with grease on assembly of the bearing.
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.Setting the foundation of the bushings, the steel back provides exceptional stability,load carrying and heat dissipation characteristics.

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

HTTP://WWW.BRONZEGLEITLAGER.COM

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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