POM (Polyoxymethylene) indents self-lubricating plain bearings, also known as bronze metal polymer bearings, offer a unique combination of properties that make them suitable for a wide range of applications. These bearings feature a bronze metal backing with POM indents that provide self-lubricating properties, eliminating the need for external lubricants.

The bronze metal backing provides excellent strength and wear resistance, while the POM indents offer low friction and good sliding properties. This combination results in a bearing that can handle high loads and maintain consistent performance over extended periods of time.

The ability to customize the size of these bearings in inches allows for precise fitting into specific applications. Wh you need a small bearing for a precision instrument or a large bearing for a heavy-duty machine, POM indents self-lubricating plain bearings can be tailored to meet your exact requirements.

These bearings are commonly used in applications where lubrication is not feasible or desired, such as in food processing equipment, medical devices, and cleanroom environments. They are also suitable for high-speed and high-temperature applications, making them a versatile choice for a wide range of industrial applications.

When selecting a supplier for POM indents self-lubricating plain bearings, it is important to ensure that they offer a variety of sizes and materials to meet your specific needs. Additionally, look for a supplier with a good reputation for quality and reliability to ensure that you receive bearings that will perform as expected.

Plain Bearing - ID* OD* Length mm

shock absorbers bushes, hinges steel bushes, gears bearings, pumps sleeve bushings, valves steel bronze bushes, car seats, vibration dampers bearings made to order from china.

Viiplus china manufactured sleeve bushings with layers of self-lubricating material that require either no lubrication or lubrication only at initial installation. Our commitment to the environment extends not only to our lead-free dry bearing material, but to our solvent-free manufacturing processes.

Our innovative technologies are applied in our sophisticated, state-of-the-art manufacturing and development facilities. These facilities allow us to continually respond to customer demand for standard and customized products designed to improve comfort and reduce maintenance for shock absorbers, hinges, gears, pumps, valves, car seats, vibration dampers and other equipment requiring bearing materials.

Lead-free, environmentally friendly
Produced in a solvent-free process
High delivery performance
Broad product portfolio available

The POM 2Y sliding bearings MADE TO ORDER FROM CHINA are lead-free and constitute an improvement on the POM 2X bearings. They are used in sectors where lead must not be used, such as in textile machinery and vehicle steering systems, medium-speed applications or applications with medium loads and medium levels of grease lubrication.

Bronze Sleeve Bushing POM INCH SIZES made to order from china Consists of a steel backing and a porous bronze intermediate layer and overlaid with modified polymers ( POM ).Indents on the surface of the polymer are designed for better distribution of the lubrication (oil or grease) between the bearing and themating material. The steel back provides the bush with higher mechanical strength and load capacity. Moreover, the steel backingis plated with a corrosion protection layer. Products of POM series are applied in automotive chassis, forging machines,
cranes, presses, agricultural equipment, etc.

Instructions for installation of oil-free bearing production and application
concept

It has the characteristics of high bearing capacity, impact resistance, high temperature resistance, strong self-lubrication ability, etc., especially suitable for heavy load, low speed, reciprocating sliding bearing or swinging, etc., which is difficult to lubricate and form oil film, and is not afraid of water flushing and other acid oil-free bearing corrosion and erosion.Generally speaking, inlaid bearings not only save fuel and energy, but also have longer working life than ordinary sliding bearings.At present, the products have been widely used in metallurgical continuous casting machines, rolling equipment, mining machinery, ships, steam turbines, water turbines, injection molding machines and equipment production lines.
Installation instructions
1. It should be determined wh the self-lubricating bearing surface of the shaft and shaft shell has bumps, protrusions, etc
2. Wh there is dust or mold sand attached to the surface of the bearing shell.
3. Although it is a small bump, protuberances, etc., if there is an oil grindstone or fine sandpaper to remove.
4. A small amount of lubricating oil should be applied to the surface of the shaft and shaft shell in order to avoid collision during the installation.To mount the bearing on the shaft, apply force on the inner ring; to mount the bearing on the housi method ng, apply force on the outer ring.To be in the bearing force, be careful to make the force vertical and uniform down, deflection will cause bearing injury.To this end absolutely try to avoid wide - hitting.

5. Oil-free bearing retainer and sealing plate are also absolutely not applicable.The hammer and casing installation method is a common method, because it will damage the bearing, so do not hit directly.Be as shown in the general, so that the sleeve in the middle and beat in.The hammer should be struck lightly.In the mechanical structure, when the inner and outer rings are tightly matched, the backing plate should be used to make sure that the force can be applied to the inner and outer rings at the same time.If only in the inner ring add force pressure, the force must be the ball and pressure into the outer ring, therefore, will cause scars in the orbital plane.To install the bearing with large margin on the shaft, it is widely used to heat the bearing to 80~90 degrees and expand the inner diameter in clean oil.
6. The hardness of the bearing may be reduced by overheating, so it must not exceed 100 degrees.At this point, the bearing must be suspended using steel wire, or placed on the wire mesh, support plate, do not place at the bottom of the groove.When the bearing reaches the desired temperature (below 100 ° c), it should be immediately removed from the groove and quickly inserted into the shaft. The bearing will contract with the temperature drop, and sometimes there will be a gap between the shaft shoulder and the end face of the bearing. Therefore, it is necessary to use tools to press the bearing in the direction of the shaft.

Application

POM lubricated bearing: acid polymethylaldehyde with high wear resistance. It is necessary to assemble with oil storage pit when the bearing surface is arranged regularly
With grease, especially suitable for high load under the low speed of rotation, swing movement and often under load negative, opening and closing and less prone to forming fluid lubrication parts, under the condition of boundary lubrication, can use for a long time without refueling and maintenance, and in the process of gas can be used to more prolong the service life of bearing, currently applicable to the metallurgical machinery, mining machinery, hydraulic machinery, auto parts, construction machinery, agricultural machinery, etc.
Oil-free self-lubricating bearing: this product is a mixture of steel plate, sintered spherical bronze powder in the middle layer, rolled and lead in the surface layer.It has the characteristics of low friction coefficient, wear-resisting and corrosion-resistant, oil-free self-lubrication and long service life, which can reduce cost, reduce noise, prevent from sticking and sliding.It is widely used in sliding parts of all kinds of machinery, such as printing press, textile machine, hydraulic truck, tobacco machine, medical machinery, fitness apparatus, micro-motor, automobile, motorcycle, etc.
Metal base inlaid solid self-lubricated bearing: it is a new lubricated bearing with both the characteristics of metal bearing and self-lubricated bearing. It is loaded by the metal matrix and lubricated by the special formulation of solid lubricated material.It has the characteristics of high bearing capacity, impact resistance, high temperature resistance and strong self-lubrication ability.Traditional oil-bearing: because of its advantages of low noise and self-lubrication, oil-bearing has become the new favorite of computer CPU fan bearing, and the market demand is large.In addition, with the increasing demand for noise, the application of oil-bearing in household appliances is expanding.
The basic requirements of bearing materials depend largely on the working performance of the bearing.The selection of suitable materials for rolling bearings will have a great impact on their service performance and life.Generally speaking, the main failure modes of rolling bearing are fatigue spalling under the action of alternating stress and loss of bearing precision due to friction and wear.In addition, there are cracks, indentation, corrosion and other causes of abnormal damage to the bearing.Therefore, rolling bearings should have high resistance to plastic deformation, less friction and wear, good rotation accuracy, good dimensional accuracy and stability, and long contact fatigue life.And many of these properties are determined by materials and heat treatment processes.

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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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