Product Description
Plastics Uhmw-Pe bushing with wear resistance
UHMW-PE(Ultra high Molecular Weight Polyethylene )is a thermoplastic engineering plastic with the average molecular weight more than 9.0 million. (PE only has the molecular weight between 20 to 2 hundred thousand. ) This kind of material with 5 top performance of high-wear-resistance, good-chemical resistance, low-temperature resistance, self-lubrication and high-impact resistance, which is regarded as a “surprised” engineering plastic of excellent comprehensive capacity and competitive price.
Main characteristics:
1. Very high-wear resistance, 7 times wear resistance than steel, 4 times than PTFE
2. Very high anti-impact resistance, 2 times impact resistance than PC, 5 times than ABS.
3. Good self-lubrication, the same as PTFE, better than steel and brass appended lubricating oil.
4. Good anti-corrosion resistance, it has very stable chemicals property and can endure the corrosion of all kinds of corrosive medium and organic solvent in certain rang of temperature and humidity.
5. Very high-inadhesion resistance, the surface of product hardly affixes other material.
6. Very high-impact resistance, 10 times impact resistance than PA66, 8 times than PTFE.
7. Good low temperature resistance, in liquefied nitrogen (- 196º C), it still has the prolongation.
Few other materials can reach to this performance.
8. Non-toxic and clean property, UHMW-PE, which is the material that Food and Drug Administration (FDA) and United States Department of Agriculture (ASDA) permit to apply in food and medicine fields.
| Property | Item No. | Unit | Value | |
| Mechanical Properties | 1 | Density | g/cm3 | 0.94-0.96 |
| 2 | average molecular weight | g/mol | More than 9.0 million | |
| 3 | Tensile strength (23ºCin air) | MPa | 22 | |
| 4 | Breaking strength | MPa | 42 | |
| 5 | Tensile strain at break | % | 600 | |
| 6 | Charpy impact strength (notched) | mJ/mm 2 | No break | |
| 7 | Ball indentation hardness | N/mm 2 | 42 | |
| 8 | Shore D hardness | — | D65 | |
| 9 | Abrading(sand slurry experiment) | — | 100 | |
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| Material: | PE |
|---|---|
| Size: | According to Drawing or Sample |
| Color: | White, Black, Green, Yellow, Blue, Red |
| Tooling: | CNC Lathe |
| Transport Package: | Packing in Paper Carton and Wooden Pallet |
| Specification: | RoHS, FDA |
| Customization: |
Available
| Customized Request |
|---|
How does UHMW material resist wear and extend the lifespan of bushings?
The UHMW (Ultra-High Molecular Weight Polyethylene) material exhibits exceptional wear resistance, which allows it to extend the lifespan of bushings. Here’s a detailed explanation:
UHMW has several properties that contribute to its wear resistance:
1. Molecular Structure:
UHMW has a unique molecular structure characterized by long chains of polyethylene molecules. These chains are highly entangled, resulting in a high molecular weight and a dense, crystalline structure. This molecular structure provides UHMW with excellent mechanical strength and wear resistance.
2. Low Friction Coefficient:
UHMW has a low coefficient of friction, which means it reduces the amount of friction generated between the bushing and the mating surfaces. This low friction coefficient helps to minimize wear by reducing the abrasive forces acting on the bushing material.
3. Self-Lubricating Properties:
UHMW is a self-lubricating material, meaning it has inherent lubricating properties without the need for additional lubrication. The UHMW molecules have a low surface energy, allowing them to slide smoothly against each other and other surfaces. This self-lubricating nature reduces friction and wear on the bushing, extending its lifespan.
4. High Impact Strength:
UHMW has excellent impact strength, which means it can withstand sudden and repeated impacts without significant damage. This property helps UHMW bushings to resist wear caused by impact or shock loads, increasing their durability and lifespan.
5. Resistance to Abrasion:
UHMW is highly resistant to abrasion, making it suitable for applications where the bushings are subjected to abrasive environments or materials. The material’s resistance to abrasion helps preserve the integrity of the bushing surface, reducing wear and extending its lifespan.
6. Chemical Resistance:
UHMW is resistant to a wide range of chemicals, including acids, alkalis, and solvents. This chemical resistance allows UHMW bushings to maintain their structural integrity and performance when exposed to corrosive substances, further enhancing their lifespan.
By combining these properties, UHMW material provides excellent wear resistance for bushings. Its ability to withstand friction, impact, abrasion, and chemical attack helps to minimize wear and extend the lifespan of the bushings. This, in turn, contributes to the overall efficiency and longevity of equipment.
Can UHMW bushings be customized or machined for specific applications?
Yes, UHMW (Ultra-High Molecular Weight Polyethylene) bushings can be customized or machined to meet specific application requirements. Here’s a detailed explanation:
UHMW is a versatile material that can be easily machined or fabricated to create bushings with customized shapes, sizes, and configurations. The machinability of UHMW allows for precise dimensional control and the creation of bushings that fit unique application needs.
Customization options for UHMW bushings include:
- Size and Dimensions: UHMW bushings can be machined to specific sizes and dimensions, allowing for a precise fit within the application.
- Shape and Configuration: UHMW can be machined into various shapes and configurations, such as cylindrical bushings, flanged bushings, thrust washers, or custom-designed shapes to accommodate specific application requirements.
- Tolerances: UHMW bushings can be machined to meet specific tolerance requirements, ensuring proper fit and functionality within the application.
- Features and Modifications: UHMW bushings can be customized with features such as grooves, notches, holes, or lubrication channels to enhance performance or facilitate installation.
- Surface Finish: The surface finish of UHMW bushings can be modified through machining or post-processing techniques to achieve desired characteristics such as improved friction properties or enhanced aesthetics.
When customizing or machining UHMW bushings, it is essential to consider the capabilities of the machining equipment and the expertise of the manufacturer or fabricator. UHMW is relatively easy to machine, but specialized tools and techniques may be required to achieve specific shapes, tolerances, or surface finishes.
It’s advisable to work with experienced manufacturers or fabricators who have expertise in machining UHMW and can provide guidance on design considerations, material properties, and machining techniques. They can assist in selecting the appropriate customization options and ensure that the UHMW bushings meet the required specifications and performance criteria.
In summary, UHMW bushings can be customized or machined to meet specific application requirements. The versatility and machinability of UHMW allow for the creation of bushings with custom sizes, shapes, tolerances, features, and surface finishes. Working with knowledgeable manufacturers or fabricators is crucial to ensure successful customization and machining of UHMW bushings for specific applications.
Are UHMW bushings suitable for high-load or high-speed machinery?
UHMW (Ultra-High Molecular Weight Polyethylene) bushings are well-suited for both high-load and high-speed machinery. Here’s a detailed explanation:
High-Load Machinery:
UHMW bushings exhibit exceptional strength and toughness, allowing them to handle high loads effectively. Their high molecular weight and impact resistance enable them to withstand heavy loads without deformation or failure. UHMW bushings can distribute the load evenly, reducing stress concentrations and minimizing the risk of premature wear or damage. These properties make UHMW bushings suitable for high-load machinery applications such as cranes, presses, heavy-duty equipment, and construction machinery.
High-Speed Machinery:
UHMW bushings are also suitable for high-speed machinery due to their low friction and self-lubricating properties. The low coefficient of friction of UHMW reduces the resistance to motion, allowing for smooth and efficient operation at high speeds. The inherent self-lubricating nature of UHMW reduces the need for additional lubrication, ensuring consistent low friction performance even under high-speed conditions. UHMW bushings can effectively handle the demands of high-speed machinery applications such as conveyor systems, rotating equipment, and automated machinery.
It’s important to note that while UHMW bushings offer advantages for high-load and high-speed machinery, the specific application requirements should be considered. Factors such as the magnitude and distribution of the load, operating temperatures, and environmental conditions may influence the suitability of UHMW bushings. In some cases, additional considerations such as the use of reinforcements or alternative bearing materials may be necessary to optimize performance.
When selecting UHMW bushings for high-load or high-speed machinery, it’s crucial to consult with the manufacturer or supplier to ensure that the bushings meet the specific requirements of your application. They can provide guidance on material selection, design considerations, and any necessary modifications to ensure optimal performance and reliability.
In summary, UHMW bushings are suitable for both high-load and high-speed machinery due to their exceptional strength, low friction, and self-lubricating properties. With proper selection and application-specific considerations, UHMW bushings can contribute to the reliable and efficient operation of machinery in various industries.
editor by CX 2024-02-22