The steel base self-lubricating plain bearing with sintered tin bronze layer offers a robust and durable solution for various industrial applications. The steel base provides excellent structural support and rigidity, while the sintered tin bronze layer ensures smooth and efficient operation through its self-lubricating properties.

The sintered bronze layer exhibits high wear resistance and load-bearing capacity, making it suitable for high-demand applications. The self-lubricating nature of the bearing reduces the need for regular lubrication, thereby minimizing maintenance requirements and operational downtime.

Wh used in heavy machinery, automotive components, or other industrial equipment, this steel base self-lubricating plain bearing with sintered tin bronze layer ensures reliable and long-lasting performance.

Polyoxymethylene (POM) Bushing,

dry sliding bearings have a steel base and a 0.2 to 0.4 mm sintered tin bronze layer.

Key Features

• Low maintenance operation with initial lubrication
• High pv-value
• Low wear
• Low seizure
• Rotating, oscillating and axial motion possible
• Available in a wide range of standard dimensions in accordance to ISO 3547

An extensive inventory of bronze bushings offering customers direct delivery service. Fast direct delivery service for quality products. POM wrapped acetal bearings are comparable with PM POM, PCM M, EGB E40, EGB E50 en PAP P20.

For many high loaded applications maintenance free bearings do not achieve the needed service life within an acceptable period. Reasons could be:

• Long-term stress
• High edge load
• Operation in rough environment

POM Metal-Polymer Plain Bearings Grease Lubricated - POM - Oil or grease-lubricated bearings - Metric & Imperial Sizes

Standard POM bush Components available from stock

• Metal-Polymer Composite Bushing Material

• Steel Back + Porous Bronze Sinter +
POM with Lubrication Indents

• POM provides maintenance-free operation • POM has a high pv capability • POM exhibits low wear rate • Seizure resistant • Suitable for temperatures from -40 to +120 °C • High static and dynamic load capacity • Good frictional properties • No water absorption and therefore dimensionally stable • Compact and light • Suitable for rotating, oscillating, reciprocating and sliding movements • POM bearings are prefinished and require no machining after assembly

These POM Bush Bearings are widely used in the Machinery Industry

(Inside Diameter x Outside Diameter x Length)

• Lightly lubricated POM bushings for grease or oil lubricated applications
• Standard parts contain grease marks in the slip layer; single sliding layer available on request
• Optimal performance under relatively high loads and low speeds
• Suitable for linear, oscillating and rotary movements
• Wide range of parts available from stock

Bearing forms available in standard dimensions

• Cylindrical bushes
• Flanged bushes
• Thrust washers
• Sliding plates

POM Composite Bearing, Replacement POM Bush Bearing | Self-lubricating Composite Bushings

POM composite bushings are referred to as prelubricated because their material is designed to operate with marginal lubrication. These bushing type effectively fills the gap between fully lubricated and dry sliding bushings.We offer a wide range of straight POM composite bushings. The advantages of these sleeves are:

• maintenance-free operation

• very good frictional properties

• high load capacity

• high sliding speed

• low working clearance

Metal-Polymer Composite Material

POM Composite Bearing Benefits

• Marginally lubricated bearing material for grease or oil lubricated
applications
• Standard parts contain grease indents in the sliding layer; plain
sliding layer available by request
• Optimum performance under relatively high loads and low speeds
• Suitable for linear, oscillating and rotating movements
• Wide range of parts available from stock

POM Bearing Metal-polymer bearing lubricated with grease

Pom Composite bushing Characteristics

Pom Composite lubricated bushing can be used for grease or oil lubrication applications, or in an oil-free environment

The standard parts contain grooves in the sliding layer of the contact parts, which can store grease or friction debris.

The smooth sliding layer can be designed and provided upon request

Composite bearing sleeve has the best performance under relatively high load and low speed, and the highest relative life

Composite bearings are used in environments of linear, oscillating and rotational motion

All kinds of bearing parts are available from stock

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;
4. 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

Self-lubricating oil-free composite bearing structure composition

Wrapper Bronze Bearing characteristics

Logistics and transportation equipment applications

The noise of traditional bearing, short maintenance cycle and service life, and high maintenance cost limit the normal operation time of equipment, especially transportation equipment and field operation equipment. The application of VIiPlUS POM BUSHING self-lubricating bearing can not only solve these problems, but also improve the comfort level of equipment operation.For example, the use of lubricating oil or one-time painting can solve the process maintenance and high shutdown costs, while avoiding environmental pollution.Reliable, light and excellent bearing solutions Pom Composite Bushing,Pom Bushings,Pom Sleeve Bushing

Pom Composite Bushing are widely used in logistics applications

he railway, The inter-city rail, shipbuilding, space, Forklift truckT

Viiplus provides the railway and other rail transport industry with gear boxes, motor suspension system and POM BUSHING components.

Title: home
URL: http://home.links.nl

Today, viiplus light and maintenance-free bearings are used by all major commercial and aircraft manufacturers and tier 1 suppliers for fixed and rotary wing aircraft. Our bearing solutions are used in a wide range of aeronautical applications, from the landing gear, to flight control and engines, to a variety of customized applications in the passenger and aerospace seats sector.
Our aircraft bearing solutions are used in a variety of aerospace applications from landing gear, flight control and engines to passenger seats, as well as in a wide variety of customizations for the aerospace industry

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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