China Hot selling Ball Bearing with Plastic Inner Ring, Roller Shutter Accessory wheel bearing

Product Description



Ball Bearing with plastic inner ring, OD28mm                                             

Articolo-Artikel-Art. No. Dimension(mm) Cone Material
d D H h
405.112.28 12 28 10 8.2 Plastic

We, SIGATE GROUP, can provide you with:
1. Full range of roller shutter accessories.
2. Tubular motors 35mm, 45mm, 59mm and 92mm, Central Motors.
3. Insect Screens System and components.
4. Extruded Aluminum Profiles.

SIGATE has started to produce full range of roller shutter accessoreis since year 1999 and has become absolutely the leading company in China for Roller shutter accessories. Up to today,   we are CZPT to provide you with full packages in the fields of roller shutters, mosquito sistems, etc.  Today, SIGATE GROUP own the following production facilities:


a. Factory One to produce full range of roller shutter accessories and mosquito systems and the website is:  . Our factory is producing almost all the popular roller shutter accesssories prevailing in Italy, Germany, France, Spain and Poland. And these roller shutter accessories are selling well throughout the world. 

      At the same time, we have the best machine from Italy to make mosquito systems and we’ve developed several mosquito systems and you can find our catalogs in our website. 


b. Factory Two to produceTubular motors for tube 35mm, 45mm, 59mm and 92mm. We are selling more than 700,000 motors a year throughout the world. 

c. Factory Three to make Aluminum Extrusion and we are especially focusing on Aluminum profiles (guide rail, bottom beam, aluminum extruded slats, etc) for Roller Shutters, insect screens, blinds, windows, doors, etc

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Type: Aluminum Roller Shutter
Material: Metal
Dimension: Od28mm
Transport Package: Carton
Specification: 500pcs/carton
Trademark: Sigate


Customized Request

plastic bearing

How do plastic bearings enhance the overall efficiency and functionality of machinery and equipment?

Plastic bearings play a crucial role in enhancing the overall efficiency and functionality of machinery and equipment. Here’s a detailed explanation:

  • 1. Reduced Friction:

Plastic bearings offer low friction characteristics, which significantly reduce energy losses due to friction. The reduced friction allows machinery and equipment to operate more efficiently by minimizing heat generation and power consumption. This improved energy efficiency translates into cost savings and increased overall performance.

  • 2. Improved Reliability:

Plastic bearings are designed to provide reliable performance in various operating conditions. They offer excellent resistance to wear, corrosion, and chemical exposure, ensuring prolonged service life and reduced downtime. By using plastic bearings, machinery and equipment can operate reliably and continuously without frequent maintenance or premature failure.

  • 3. Enhanced Precision:

Plastic bearings contribute to enhanced precision in machinery and equipment. They have low levels of self-generated play, which means they provide accurate and repeatable positioning. This is particularly important in applications that require precise movement or alignment, such as robotics, medical devices, or measuring equipment. The improved precision offered by plastic bearings leads to greater accuracy and consistency in the performance of machinery and equipment.

  • 4. Quieter Operation:

Plastic bearings can significantly reduce noise and vibration levels in machinery and equipment. They possess inherent damping properties that help absorb and dissipate vibrations, resulting in quieter operation. This is especially advantageous in applications where noise reduction is critical, such as household appliances, HVAC systems, or audio equipment. The quieter operation provided by plastic bearings enhances user comfort and reduces noise pollution.

  • 5. Lightweight Design:

Plastic bearings are generally lighter in weight compared to their metal counterparts. The lightweight design of plastic bearings reduces the overall weight of machinery and equipment. This has several benefits, including improved portability, reduced energy consumption during transportation, and lower inertia during operation. The reduced weight contributes to increased efficiency and ease of handling in various applications.

  • 6. Resistance to Contaminants:

Plastic bearings exhibit excellent resistance to contaminants such as dirt, dust, moisture, and chemicals. Their self-lubricating properties and non-corrosive nature allow them to operate effectively even in harsh environments. This resistance to contaminants ensures reliable and consistent performance of machinery and equipment, particularly in industries where exposure to harsh conditions is common, such as agriculture, construction, or automotive.

In summary, plastic bearings enhance the overall efficiency and functionality of machinery and equipment by reducing friction, improving reliability, enhancing precision, providing quieter operation, offering a lightweight design, and exhibiting resistance to contaminants. These advantages contribute to increased energy efficiency, extended service life, improved performance, and enhanced user experience. By incorporating plastic bearings into their designs, industries can optimize the efficiency and functionality of their machinery and equipment across various applications.

plastic bearing

What are the potential challenges or limitations of using plastic bearings in specific industries?

While plastic bearings offer numerous advantages, they also have certain challenges and limitations when used in specific industries. Here’s a detailed explanation of the potential challenges or limitations:

  • 1. Temperature Limitations:

One of the limitations of plastic bearings is their temperature limitations. Different types of plastic materials have varying temperature ranges within which they can operate effectively. In high-temperature environments, plastic bearings may experience reduced load capacity, increased friction, or even deformation. Therefore, in industries such as aerospace, automotive, or heavy machinery, where high temperatures are common, alternative bearing materials may be more suitable.

  • 2. Load Capacity:

Plastic bearings generally have lower load carrying capacities compared to their metal counterparts. They may not be suitable for applications with extremely high loads or heavy machinery where substantial forces are involved. Exceeding the load capacity of plastic bearings can lead to premature wear, deformation, or failure. Therefore, in industries that require heavy-duty applications or high load capacities, metal bearings or other robust bearing solutions may be preferred.

  • 3. Speed Limitations:

Plastic bearings may have limitations when it comes to high-speed applications. The speed at which plastic bearings can operate effectively without experiencing excessive friction, heat buildup, or wear is typically lower compared to metal bearings. In industries that require high rotational speeds, such as industrial machinery or automotive applications, alternative bearing materials or specialized designs may be necessary to handle the demands of high-speed operation.

  • 4. Chemical Compatibility:

While plastic bearings offer excellent chemical resistance to a wide range of substances, they may not be compatible with certain aggressive chemicals or solvents. Some chemicals can cause degradation, swelling, or softening of certain plastic materials, affecting the performance and lifespan of the bearings. In industries where exposure to harsh chemicals is prevalent, it is crucial to select plastic bearings that are specifically designed to withstand the specific chemical environment or consider alternative bearing materials.

  • 5. Abrasion and Wear:

Plastic bearings may be more susceptible to abrasion and wear compared to metal bearings, especially in applications involving abrasive particles or high levels of friction. While plastic bearings are designed to resist wear, prolonged exposure to abrasive conditions can lead to increased wear rates and reduced lifespan. In industries such as mining, construction, or material handling, where abrasive contaminants are present, additional protective measures or alternative bearing materials may be necessary to ensure long-term performance.

  • 6. Application-Specific Considerations:

Each industry has its specific requirements and operating conditions that must be considered when selecting bearings. Factors such as load type, vibration, shock, moisture, and environmental conditions can impact the suitability of plastic bearings. It is essential to evaluate the specific application requirements and consult with bearing manufacturers or industry experts to determine whether plastic bearings can meet the demands of the particular industry.

In summary, while plastic bearings offer many advantages, they also have limitations in specific industries. Temperature limitations, load capacity, speed limitations, chemical compatibility, abrasion and wear susceptibility, and application-specific considerations are important factors to consider when deciding whether plastic bearings are suitable for a particular industry or if alternative bearing materials should be considered.

plastic bearing

How do plastic bearings compare to traditional metal or steel bearings in terms of performance?

When comparing plastic bearings to traditional metal or steel bearings, several factors come into play in terms of performance. Here’s a detailed comparison of plastic bearings and traditional metal or steel bearings:

  • 1. Friction and Wear:

Plastic bearings generally exhibit lower friction coefficients compared to traditional metal or steel bearings. This characteristic results in reduced energy consumption, smoother operation, and less wear on the bearing surfaces. Plastic bearings often have self-lubricating properties, further enhancing their resistance to wear and reducing the need for external lubrication. On the other hand, metal or steel bearings may require regular lubrication to maintain optimal performance and prevent excessive wear.

  • 2. Corrosion Resistance:

Plastic bearings offer excellent resistance to corrosion, making them particularly suitable for applications in moist or corrosive environments. Unlike metal or steel bearings, plastic bearings do not rust or corrode, allowing them to maintain their performance and integrity over time. Metal or steel bearings, while often treated with protective coatings, may still be susceptible to corrosion if the coating is compromised or in aggressive operating conditions.

  • 3. Load Capacity:

Traditional metal or steel bearings generally have higher load-carrying capacities compared to plastic bearings. Metal bearings are known for their high strength and ability to withstand heavy loads and shock forces. Plastic bearings, although continuously improving in this aspect, may have lower load-carrying capacities and are typically more suitable for moderate load applications. It is important to carefully evaluate the specific load requirements of the application when considering plastic bearings.

  • 4. Temperature Range:

Metal or steel bearings typically have a broader temperature range compared to plastic bearings. While plastic bearings can operate effectively within specific temperature limits, exposure to extreme temperatures can affect their performance. Certain plastic materials, such as PEEK, offer higher-temperature resistance, but they may still have limitations compared to metal or steel bearings, which can handle a wider range of temperatures.

  • 5. Noise and Vibration:

Plastic bearings possess inherent damping properties, which can help reduce noise levels and vibrations in machinery and equipment. The ability of plastic materials to absorb vibrations contributes to a quieter and smoother operation. Metal or steel bearings, although effective in many applications, may produce more noise and vibrations due to their higher rigidity and less damping characteristics.

  • 6. Cost and Maintenance:

Plastic bearings can offer cost advantages over metal or steel bearings in certain situations. Plastic bearings often have lower material and production costs, which can contribute to overall cost savings. Additionally, plastic bearings can require less maintenance due to their self-lubricating properties, resistance to corrosion, and reduced wear. Metal or steel bearings may require more frequent lubrication, inspection, and replacement, which can increase maintenance costs and downtime.

It’s important to note that the performance of plastic bearings and traditional metal or steel bearings can vary depending on the specific application requirements. While plastic bearings excel in certain areas such as corrosion resistance, low friction, and noise reduction, metal or steel bearings may be more suitable for high-load or high-temperature applications. Engineers and designers should carefully evaluate the performance characteristics of both types of bearings and consider the specific needs of the application to determine the most appropriate choice.

China Hot selling Ball Bearing with Plastic Inner Ring, Roller Shutter Accessory   wheel bearingChina Hot selling Ball Bearing with Plastic Inner Ring, Roller Shutter Accessory   wheel bearing
editor by CX 2024-05-10