China manufacturer High Quality China Manufacturer Nu312 Nj307 Nj312 Nj205 Nj206 Nu205 Nu206 Nup309 Ecp Ecml Ecj Ecm Single Row Double Row 4 Row Cylindrical Roller Bearings with Great quality

Product Description

We can provide manufacturing capabilities and services of regular bearings for you, or customized non-standard bearings as you required.

  — Dimensions
  — Material
  — Tolerance standard

  — Logo (Laser Marking)
  — Package Design

With over 40 years experience of the bearing manufacturing, we know how to make good bearings with less cost consistently and efficiently.

We use advanced CNC turning, grinding, and superfinishing machines to ensure high, stable, and accurate machining.  All of your goods, from the most economical category, to the highest rated category, will always be manufactured precisely to the standards you require.


Heat treatment is 1 of the crucial processes to ensure high performance of bearing materials. Compared with other manufacturers, we can produce higher quality bearings at smaller cost, with a more flexible and controllable production schedule, and in a shorter time

We have 6 heat treatment production lines.

Bearings are heated uniformly, with small deformation and little/no oxidized decarburization, which can make them have high hardness, high fatigue resistance, good wear resistance, dimensional stability, and excellent mechanical strength.


All our products are characterized by low noise, low friction and long life.  This is due to our attention to the roundness, waviness and surface roughness of bearing raceway.

Our products fully meets the requirements of national and international standards according to the testing result of roughness, roundness, hardness, vibration noise, vibration velocity.

1, Inner package
   Corrosion and Dust Proof PE plastic film  / bag packing + Tube packing, or Wrapping  tape for larger bearings.
2, Corrugated Individual Box
   Our attractive sales-helpful “3-JOYS” package, or as the design of your package.
3, Outer package
  Corrugated carton + Wooden pallet 

  · Constant temperature (20°C) and humidity (RH 52%) warehouse
  · Hundreds of models on hand, short delivery time.



 We are happy to send you free samples of our bearings for field   testing. All transportation costs will be paid by us.

 Please note: Depending on the model and value of samples,   this policy may not apply!

 Please contact our sales staff for details.


To facilitate your payment, we offer a variety of options! 

1, About the lead time.
This depends on several factors, like Is the production schedule tight? Is there a corresponding model in stock, and is there enough of this model in stock? How many pcs of that model would be ordered?
Simply speaking, based on a 20′ GP container load:

If the model your Preferred is Sufficient stock Lead Time
Regular models YES Within 7 days
Regular models NO Within 30 days
Non-regular model NO About 50 days

For accurate estimate, please contact with our sale stuff. Thanks.

2, Minimum order quantity. 

Even just ONE piece of bearing is ok for us.

3, If you don’t know which model is the right choice…

We would like to give you some advise if you like, according to the real situation and demand of your local market. Our purpose is to help you to get proper and right models for your customers, so that you would make a better sales and income finally.

4, Factory Inspection

We surely would welcome you or your representatives to come to our plants or working offices to take a good look and chat with our hardworking CZPT employees. Ask our sales stuff and she/he will arrange that for you. /* 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

Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Small and Medium-Sized (60-115mm)
US$ 0/Piece
1 Piece(Min.Order)


Order Sample



Customized Request

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Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
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

Are there specific industries or applications where roller bearings are frequently used?

Roller bearings are widely used in various industries and applications where there is a need for efficient load support, smooth rotation, and reliable performance. The versatility and effectiveness of roller bearings make them suitable for a wide range of machinery and equipment. Here’s a detailed explanation of the specific industries and applications where roller bearings are frequently used:

  • Automotive Industry:

The automotive industry extensively relies on roller bearings for numerous applications. They are commonly used in wheel hubs, transmissions, engines, differentials, and steering systems. Roller bearings provide support and facilitate smooth rotation in these critical automotive components, ensuring optimal performance and durability.

  • Aerospace Industry:

In the aerospace industry, roller bearings are crucial for various applications, including aircraft engines, landing gear systems, actuation systems, and control surfaces. The high load-carrying capacity and reliability of roller bearings make them suitable for withstanding the extreme operating conditions and demands of the aerospace industry.

  • Industrial Machinery:

Roller bearings find extensive use in industrial machinery across multiple sectors. They are commonly employed in machine tools, conveyors, pumps, compressors, electric motors, and power generation equipment. Roller bearings contribute to efficient power transmission, reduced friction, and smooth operation in these industrial applications.

  • Construction and Mining:

In the construction and mining industries, roller bearings are frequently utilized in equipment such as excavators, loaders, bulldozers, crushers, and drilling machines. These bearings are designed to withstand heavy loads, shock loads, and harsh environmental conditions commonly encountered in construction and mining operations.

  • Railways and Transportation:

Roller bearings play a vital role in the railway and transportation sector. They are widely used in locomotives, train wheels, axles, gearboxes, and suspension systems. Roller bearings ensure smooth and reliable operation of railway vehicles, withstand heavy loads, and contribute to the overall safety and efficiency of the transportation industry.

  • Energy and Power Generation:

In the energy and power generation sector, roller bearings are commonly employed in turbines, generators, wind turbines, and hydroelectric power plants. They provide support and facilitate smooth rotation in rotating machinery, contributing to efficient energy generation and transmission.

  • Medical and Healthcare:

Roller bearings are also used in medical and healthcare equipment, such as medical scanners, imaging devices, dental drills, and surgical instruments. These bearings enable precise and smooth movement, ensuring accurate diagnostics and reliable performance in medical applications.

Additionally, roller bearings find applications in a wide range of other industries, including agriculture, food and beverage processing, material handling, printing and packaging, textile machinery, and many more. Their versatility, load-carrying capacity, and ability to withstand diverse operating conditions make roller bearings essential components in numerous industrial and commercial 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 manufacturer High Quality China Manufacturer Nu312 Nj307 Nj312 Nj205 Nj206 Nu205 Nu206 Nup309 Ecp Ecml Ecj Ecm Single Row Double Row 4 Row Cylindrical Roller Bearings   with Great qualityChina manufacturer High Quality China Manufacturer Nu312 Nj307 Nj312 Nj205 Nj206 Nu205 Nu206 Nup309 Ecp Ecml Ecj Ecm Single Row Double Row 4 Row Cylindrical Roller Bearings   with Great quality
editor by CX 2024-04-25

Roller Bearing

As one of the leading roller bearing manufacturers, suppliers, and exporters of mechanical products, We offer roller bearing and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of roller bearing.

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