China OEM 1688 Customized Ncf209V Cylindrical Roller/Needle/Angular-Contact Ball/Spherical Surface Ball/Articulated/Plain/Thrust Bearing with High Temperature Resistance with high quality

Product Description

Product Detail

Company Intruction
Haisai bearing is a regular model industrial manufacturing enterprise integrating bearing product research and development, design, manufacturing, import and export trade. The company was founded in 1998, covers an area of more than 90,000 square meters, plant area of more than 20,000 square meters, more than 200 employees, more than 20 technical engineers, has passed the international/SO9001:2008,1SO/TS16949:2009 and other quality management system certification. In addition, we have 2 factories (located in ZheJiang and HangZhou respectively) and a trading company. We have completed the high-speed forging of bearing steel dock, automatic high-precision grinding, cryoquenching, unitized automatic constant temperature grinding, intelligent assembly and so on, complete profession production. The product size from 30mm-750mm covers single and double row tapered roller bearing, British garden taper
roller bearing, deep groove ball bearing, stainless steel shaft reducer special bearings, agricultural equipment bearings, a total of more than 2500 specifications of products.
We have a professional team of excellent quality, the technical center is equipped with all kinds of testing machines, high-precision testing instruments,material analysis instruments and more than 60 sets, for users to design develop, trial-produce all kinds of special purpose bearings, and do our best to provide high-end customers around the world with the best solutions and good after-sales service!
We has many years of experience in the industrial field of bearing supporting and industrial service, the products are exported to the United States, Germany, Italy, France, the Czech Republic, Russia and other European and American countries and supporting enterprises. We both at home and abroad enjoy a good business reputation!
We promise to be responsible for every set of bearings and industrial products sold! Make every customer satisfied, is our constant pursuit!
Factory Details
Packing Details


Bearing Information

Model NCF209V cylindrical roller bearing
Inner size 45mm
Outer size 85mm
Width 19mm
Weight 0.5kg

Testing room


Q:What’s your after-sales service and warranty?
A: We promise to bear the following responsibilities when defective products were found:
1. Replacements would be sent with goods of your next order;
2. Refund for defective products if customers require.

Q:Do you accept ODM&OEM orders?
A: Yes, we provide ODM&OEM services to worldwide customers, we also customize OEM box and packing as your requirements.

Q:What’s the MOQ?
A: MOQ is 10pcs for standardized products; for customized products, MOQ should be negotiated in advance. There is no MOQ for sample orders.

Q:How long is the lead time?
A: The lead time for sample orders is 3-5 days, for bulk orders is 5-15 days.

Q:Do you offer free samples? 
A: Yes we offer free samples to distributors and wholesalers, however customers should bear freight. We DO NOT offer free samples to end users. 

Q:How to place order?
A: 1. Email us the model, brand and quantity,shipping way of bearings and we will quote our best price for you; 
2. Proforma Invoice made and sent to you as the price agreed by both parts; 
3. Deposit Payment after confirming the PI and we arrange production; 
4. Balance paid before shipment or after copy of Bill of Loading. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Payment Term: T/T, L/C
Weight: 0.331kg
Inner Size: 40mm
US$ 0.59/Piece
1 Piece(Min.Order)


Order Sample



Customized Request

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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

roller bearing

Are there specific considerations for choosing roller bearings in applications with varying loads or operating conditions?

When selecting roller bearings for applications with varying loads or operating conditions, there are several specific considerations to keep in mind. These factors ensure that the chosen bearings can effectively handle the dynamic nature of the loads and operate reliably under changing environmental conditions. Here’s a detailed explanation of the considerations for choosing roller bearings in such applications:

  • Load Capacity and Rating:

One of the primary considerations is to ensure that the roller bearings have adequate load capacity to handle the varying loads. The load capacity of a bearing is determined by its size, design, and material composition. It is crucial to analyze the expected maximum and minimum loads, as well as any transient or shock loads that may occur during operation. Manufacturers provide load ratings for their bearings, specifying the maximum loads they can withstand under ideal conditions. By comparing the application’s load requirements with the bearing’s load rating, one can determine if the bearing is suitable for the varying load conditions.

  • Dynamic Load Rating:

The dynamic load rating of a roller bearing indicates the maximum load that the bearing can sustain for a specified number of revolutions, without experiencing excessive fatigue or wear. In applications with varying loads, it is essential to consider the dynamic load rating as the loads change. The bearing should be able to handle the highest expected dynamic loads without premature failure. If the loads exceed the bearing’s dynamic load rating, it may lead to accelerated wear, deformation, or complete failure of the bearing.

  • Static Load Rating:

In addition to the dynamic load rating, the static load rating of the roller bearing is also important. The static load rating indicates the maximum load that the bearing can sustain without permanent deformation when the bearing is stationary or rotating at very low speeds. Even in applications with varying loads, there may be periods when the bearing experiences static or slowly changing loads. It is crucial to ensure that the bearing’s static load rating is sufficient to support these loads without causing plastic deformation or loss of dimensional stability.

  • Operating Temperature:

The operating temperature of the application is another important consideration. Roller bearings may be exposed to varying temperatures due to ambient conditions or the heat generated during operation. It is crucial to choose bearings that can withstand the expected temperature range without degradation of their performance or premature failure. High-temperature applications may require bearings with heat-resistant materials or special lubricants, while low-temperature applications may require bearings with improved low-temperature toughness and lubrication characteristics.

  • Lubrication:

Lubrication plays a critical role in the performance and durability of roller bearings, especially in applications with varying loads or operating conditions. Adequate and appropriate lubrication helps reduce friction, dissipate heat, and prevent wear and corrosion. In applications with varying loads, it is essential to ensure that the chosen bearing can maintain proper lubrication under all load conditions. Considerations should be given to the lubrication type, viscosity, replenishment intervals, and compatibility with the operating conditions.

  • Sealing and Contamination:

In applications with varying loads or operating conditions, the ingress of contaminants, such as dust, dirt, or moisture, can pose a significant challenge to the performance and longevity of roller bearings. Proper sealing or shielding arrangements should be considered to protect the bearings from contamination. Depending on the severity of the environmental conditions, different types of seals or shields, as mentioned in the previous answer, may be required to ensure the desired level of protection.

  • Mounting and Alignment:

Proper mounting and alignment of roller bearings are crucial for their optimal performance and longevity. In applications with varying loads, it is important to ensure that the bearings are mounted correctly and aligned accurately to accommodate the changing loads and prevent excessive stresses. Improper mounting or misalignment can lead to increased friction, uneven load distribution, premature wear, and reduced bearing life. Following the manufacturer’s instructions and using appropriate mounting techniques are essential for ensuring reliable operation under varying load conditions.

In summary, when choosing roller bearings for applications with varying loads or operating conditions, specific considerations include load capacity and rating, dynamic and static load ratings, operating temperature, lubrication requirements, sealing against contamination, and proper mounting and alignment. By carefully considering these factors, engineers can select roller bearings that can reliably handle the varying loads and operate effectively under changing environmental conditions, ensuring optimal performance and durability of the bearings.roller bearing

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

While roller bearings offer numerous advantages and are widely used in various industries, there are also potential challenges and limitations associated with their use. These challenges may vary depending on the specific industry and application. Here’s a detailed explanation of the potential challenges or limitations of using roller bearings in specific industries:

  • High-Temperature Environments:

In industries such as steel, glass, or aerospace, where high temperatures are present, roller bearings may face challenges due to the limitations of materials and lubricants. High temperatures can cause the lubricant to break down or evaporate, leading to inadequate lubrication and increased friction. This can result in accelerated wear, reduced bearing life, and potential failure. To overcome this limitation, specialized high-temperature bearings and appropriate lubricants with high thermal stability are required.

  • Contaminated or Corrosive Environments:

In industries such as mining, food processing, or chemical manufacturing, roller bearings may be exposed to contaminants, dust, moisture, or corrosive substances. These harsh environments can lead to accelerated wear, corrosion, and premature failure of the bearings. Implementing effective sealing mechanisms, selecting bearings with corrosion-resistant materials or coatings, and using appropriate lubricants can help mitigate these challenges and enhance the durability of roller bearings.

  • High-Speed Applications:

In industries like automotive, aerospace, or high-speed machinery, operating roller bearings at extremely high speeds can present challenges. At high speeds, centrifugal forces, increased temperature, and dynamic loads can affect the performance and lifespan of roller bearings. Proper bearing selection, careful consideration of critical speed, advanced lubrication techniques, and precision manufacturing are essential to overcome these challenges and ensure reliable operation at high speeds.

  • Heavy Load Applications:

Industries such as construction, mining, or heavy machinery often involve applications with heavy loads that can exceed the load-carrying capacity of standard roller bearings. In such cases, specialized bearings, such as spherical roller bearings or tapered roller bearings, may be required to handle the higher loads. Additionally, proper mounting, alignment, and maintenance practices are crucial to prevent premature wear or failure under heavy load conditions.

  • Space Constraints:

In certain industries, such as automotive, robotics, or aerospace, there may be limitations in terms of available space for bearing installation. Roller bearings come in various sizes and configurations, and finding the right fit within the given space constraints can be challenging. In such cases, compact or customized bearing designs, such as thin-section bearings or needle roller bearings, may be required to meet the specific dimensional requirements without compromising performance.

  • Cost Considerations:

Roller bearings, especially those designed for high-speed or heavy-load applications, can be relatively expensive compared to other bearing types. In cost-sensitive industries, such as consumer electronics or appliances, balancing the performance requirements with the associated costs can be a challenge. It may be necessary to explore alternative bearing solutions or optimize the design to achieve a cost-effective balance between performance and budget.

It is important to note that while roller bearings may face certain challenges or limitations in specific industries, advancements in bearing technology, materials, and lubrication techniques continue to address these limitations and improve the overall performance and reliability of roller bearings. By understanding the specific challenges and selecting the appropriate bearing type, design, and maintenance practices, it is possible to overcome these limitations and achieve optimal performance in various industrial applications.

roller bearing

Can you explain the different types of roller bearings and their specific functions?

Roller bearings come in various types, each designed to fulfill specific functions and accommodate different types of loads. Here’s an explanation of the different types of roller bearings and their specific functions:

  • Cylindrical Roller Bearings: Cylindrical roller bearings consist of cylindrical rollers that distribute load over a larger surface area. They are capable of handling high radial loads and moderate axial loads. The cylindrical shape of the rollers allows them to provide good contact between the rolling elements and the raceways, resulting in efficient load distribution. Cylindrical roller bearings are commonly used in applications such as electric motors, gearboxes, pumps, and machine tools.
  • Tapered Roller Bearings: Tapered roller bearings have tapered rollers and raceways arranged in such a way that they can support both radial and axial loads. The tapered design enables the rollers to handle large radial forces and axial forces in a single direction. Tapered roller bearings are commonly used in automotive applications, such as wheel bearings, transmissions, and differential gears. They are also widely utilized in heavy machinery and equipment, including construction and mining equipment.
  • Spherical Roller Bearings: Spherical roller bearings have barrel-shaped rollers that align themselves with the outer raceway, allowing them to accommodate misalignment and shaft deflection. This self-aligning capability makes spherical roller bearings suitable for applications where there may be misalignment or shaft flexing. They can handle high radial loads and moderate axial loads and are commonly used in applications such as conveyor systems, mining equipment, and vibrating screens.
  • Needle Roller Bearings: Needle roller bearings consist of long, thin rollers with a high length-to-diameter ratio. They are designed to handle high radial loads in limited spaces. The small diameter of the rollers allows for a compact design, making needle roller bearings suitable for applications with limited radial space. They are commonly used in automotive transmissions, industrial gearboxes, and small appliances.
  • Thrust Roller Bearings: Thrust roller bearings are designed to accommodate axial loads and provide high thrust capacity in one direction. They consist of cylindrical or tapered rollers arranged in a cage. Thrust roller bearings are commonly used in applications where there is a need to support heavy axial loads, such as automotive transmissions, crane hooks, and large-scale machinery.

Each type of roller bearing has its specific design and functionality, making them suitable for different applications based on the type and magnitude of the loads encountered. By understanding the characteristics and functions of each type, engineers and designers can select the appropriate roller bearing to ensure optimal performance and reliability in their specific applications.

China OEM 1688 Customized Ncf209V Cylindrical Roller/Needle/Angular-Contact Ball/Spherical Surface Ball/Articulated/Plain/Thrust Bearing with High Temperature Resistance   with high qualityChina OEM 1688 Customized Ncf209V Cylindrical Roller/Needle/Angular-Contact Ball/Spherical Surface Ball/Articulated/Plain/Thrust Bearing with High Temperature Resistance   with high quality
editor by CX 2024-05-09

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