China Hot selling High Precision 30320A 30321A 30322A 30324A Tapered Roller Bearing Catalog for Automotive, Mining with Good quality

Product Description

High Precision 30320A 30321A 30322A 30324A Tapered Roller Bearing Catalog for Automotive, Mining

Bearing Specification :

Model Number 30320A
Part Name Tapered Roller Bearing
Brand FSK / KBE / SKB / OEM
Material Bearing Steel
Number of Row Single Row
Dimensions(mm)(d*D*b) 100m × 215mm × 51.5mm
Weight / Mass ( KG ) 8.3kg
HS Code  8482800000
Original Country Show CHINA

Bearings Detailed Pictures:

Same Series Bearings We Offer:

Bearing Number d D H m
30302-A 15 mm 42 mm 14.25 mm 0.1 KG
30302-XL 15 mm 42 mm 14.25 mm 0.1 KG
30303-A 17 mm 47 mm 15.25 mm 0.13 KG
30303-XL 17 mm 47 mm 15.25 mm 0.13 KG
30304-A 20 mm 52 mm 16.25 mm 0.19 KG
303/22 22 mm 56 mm 17.25 mm 0.21 KG
30305-A 25 mm 62 mm 18.25 mm 0.27 KG
303/28 28 mm 68 mm 19.75 mm 0.34 KG
30306-A 30 mm 72 mm 20.75 mm 0.45 KG
30306-XL 30 mm 72 mm 20.75 mm 0.45 KG
303/32 32 mm 75 mm 21.75 mm 0.46 KG
30307-A 35 mm 80 mm 22.75 mm 0.57 KG
30308-A 40 mm 90 mm 25.25 mm 0.81 KG
30309-A 45 mm 100 mm 27.25 mm 1 KG
3571-A 50 mm 110 mm 29.25 mm 1.38 KG
3571-A 55 mm 120 mm 31.5 mm 1.8 KG
3571-XL 55 mm 120 mm 31.5 mm 1.63 KG
3571-A 60 mm 130 mm 33.5 mm 2.02 KG
3571-XL 60 mm 130 mm 33.5 mm 2.03 KG
3571-A 65 mm 140 mm 36 mm 2.4 KG
3571-A 70 mm 150 mm 38 mm 3.02 KG
3571-A 75 mm 160 mm 40 mm 3.64 KG
3 0571 -A 80 mm 170 mm 42.5 mm 4.34 KG
3 0571 -A 85 mm 180 mm 44.5 mm 4.83 KG
3 0571 -A 90 mm 190 mm 46.5 mm 5.83 KG
3571-A 95 mm 200 mm 49.5 mm 6.77 KG
30320-A 100 mm 215 mm 51.5 mm 8.3 KG
30321 105 mm 225 mm 53.5 mm 9.54 KG
30321-XL 105 mm 225 mm 53.5 mm 9.4 KG
30322-A 110 mm 240 mm 54.5 mm 11 KG
30324-A 120 mm 260 mm 59.5 mm 14.3 KG
30326 130 mm 280 mm 63.75 mm 17.1 KG
30326-XL 130 mm 280 mm 63.75 mm 17 KG
30328 140 mm 300 mm 67.75 mm 20.4 KG
30328-XL 140 mm 300 mm 67.75 mm 20.5 KG
30330-A 150 mm 320 mm 72 mm 25.1 KG
30332-A 160 mm 340 mm 75 mm 29.9 KG
30334-A 170 mm 360 mm 80 mm 35.3 KG
30336 180 mm 380 mm 83 mm 40.9 KG
30338 190 mm 400 mm 86 mm 46.7 KG
30340 200 mm 420 mm 89 mm 52.7 KG
30344 220 mm 460 mm 97 mm 68 KG
30348 240 mm 500 mm 105 mm 88.6 KG
3571 260 mm 540 mm 113 mm 107 KG
3 0571 280 mm 580 mm 119 mm 133 KG

Other Bearings We Offer:

Deep groove ball bearings Linear ball bearings Pillow block bearings Clutch release bearings
Cylindrical roller bearings Needle roller bearings Thrust ball bearings Thrust roller bearings
Spherical roller bearings Ball joint bearings Conveyor roller bearings Angular contact ball bearings

Our Advantage:

About FSK Factory Condition :

1.How can I get the bearing price?
Mike: You can leave your message on Alibaba, or conact us directly by email, , SkYPE, Viber. Tell us your quantity, usually 2-5 hours you will get the price.
2.How can I buy them?
Mike: You can place order on Alibaba, or pay the payment by Western Union, Paypal, T/T and L/C.
3. How long I can get these bearings?
Mike: for small order, we will delivery the bearings in 1-2 days after recive your payment. usually 3-5 days will arrive in your place by international express, such as DHL, TNT, UPS and so on. For big order, please contact us.
4.How to protect the bearing quality?
Mike: All procudts passed ISO9001:2008 and ISO14000 certificates. we can accept small sample order, you can check the quality.
5. Other service.
Mike: We can offer OEM service according to your demand.
FSK Bearing Company Advantages:
(1) We have first-class testing equipment to detect bearing various data parameters and control the quality of the bearing.
Whenever bearings must first detected whether the quality is qualified and the unqualified bearing will be eliminated directly.
So we can get the trust of a large number of customers, and supply them for several years.
(2) We have our own R & D capabilities, to help customers solve the problem of non-standard bearings.
We can also according to customer requirements change their own mark.
(3) Price, our manufacture ensure that our prices across China are quite competitive.
It is better for you to compare prices and quality among suppliers.
But everyone knows you can not buy the highest quality products with the lowest price,
but our product is the best quality if you use equal price.
FSK Cooperation Details
For Small weight or ungent ,we send by express UPS,DHL,FEDEX, or EMS,china post with Thracking number
For max production , we will ship by sea/air.
Payment Item:
TT, 30% deposit , 70% before shippment.
L/C At Sight
Paypal Or Western Union In advance
Trade Assurance
Payment Protection
Timely Delivery Guaranteed
Product Qualtity Protection



High Precision 30320A 30321A 30322A 30324A Tapered Roller Bearing Catalog for Automotive, Mining , Get Cheap Price from China Bearing Factory Now !

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Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Large (200-430mm)
US$ 0.5/Piece
1 Piece(Min.Order)


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

roller bearing

Can you provide guidance on the selection and sizing of roller bearings for specific applications?

Yes, I can provide guidance on the selection and sizing of roller bearings for specific applications. Choosing the right roller bearing involves considering various factors such as load requirements, speed, operating conditions, and environmental factors. Proper sizing ensures optimal performance, reliability, and longevity of the bearing in the intended application. Here’s a detailed explanation of the steps involved in selecting and sizing roller bearings:

  1. Identify the Application Requirements:

Start by identifying the specific requirements of the application. Consider factors such as the type and magnitude of the load, operating speed, temperature, and any environmental conditions (e.g., presence of moisture, dust, or chemicals). Understanding these requirements helps in selecting a roller bearing that can withstand the application’s demands.

  1. Determine the Load:

Calculate the load the bearing will be subjected to in the application. This includes both radial and axial loads. Consider static loads (steady loads) and dynamic loads (loads that vary with time). Additionally, factor in any shock or impact loads that may occur. Determining the load is crucial for selecting a bearing with the appropriate load capacity to avoid premature failure.

  1. Select the Bearing Type:

Based on the application requirements and load calculations, choose the appropriate type of roller bearing. Common types include cylindrical roller bearings, spherical roller bearings, tapered roller bearings, and needle roller bearings. Each type has specific design features suited for different load and operating conditions. Consulting bearing manufacturer catalogs or working with application engineers can help in identifying the most suitable bearing type.

  1. Calculate the Bearing Size:

Once the bearing type is determined, calculate the required bearing size. This involves considering factors such as the bearing’s rated load capacity, speed rating, and the calculated load from the application. The bearing size should be chosen to ensure that the calculated load falls within the bearing’s rated load capacity. Additionally, consider the desired service life, which can be influenced by factors such as lubrication, operating temperature, and reliability requirements.

  1. Consider Mounting and Clearance:

Take into account the mounting arrangement and the required clearance for the bearing. Consider factors such as shaft and housing tolerances, fits, and the need for axial or radial clearance. Proper mounting and clearance ensure that the bearing operates smoothly and minimizes the risk of excessive heat generation, premature wear, or bearing damage.

  1. Consider Lubrication and Sealing:

Evaluate the lubrication requirements and sealing options for the application. Proper lubrication is essential for reducing friction, dissipating heat, and preventing premature wear. Consider the lubrication method (grease or oil), frequency of lubrication, and the compatibility of the lubricant with the operating conditions. Additionally, assess the need for sealing to protect the bearing from contaminants and ensure reliable operation in the application environment.

  1. Consult Manufacturers and Application Engineers:

When in doubt or dealing with complex applications, it is recommended to consult bearing manufacturers or application engineers. They can provide technical expertise, access to bearing selection software, and additional guidance specific to the application’s requirements. Manufacturers and engineers can consider factors beyond basic selection and sizing, such as special operating conditions, customization options, and optimization for performance and reliability.

Proper selection and sizing of roller bearings are critical for ensuring optimal performance and reliability in specific applications. By following these steps and seeking expert advice when needed, you can choose the right roller bearing that meets the demands of your application and maximizes the lifespan of your machinery or equipment.

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

How do roller bearings compare to other types of bearings, like ball bearings?

Roller bearings and ball bearings are two common types of bearings used in various applications. While both types serve the same purpose of facilitating smooth and efficient rotational motion, there are distinct differences between them. Here’s a detailed comparison of roller bearings and ball bearings:

  • Design and Construction:

Ball bearings have rolling elements in the shape of spheres (balls) sandwiched between an inner and outer raceway. The rolling elements make point contact with the raceways, distributing the load evenly. Roller bearings, on the other hand, have cylindrical or tapered rolling elements (rollers) that make line contact with the raceways. The line contact allows roller bearings to distribute higher loads over a larger surface area compared to ball bearings. Roller bearings can handle radial, axial, and combined loads more effectively, making them suitable for applications with heavy loads or high thrust forces.

  • Load Capacity:

Due to their design and larger contact area, roller bearings have a higher load-carrying capacity than ball bearings. The line contact of roller bearings allows them to distribute the load more evenly, reducing localized stresses. This makes roller bearings well-suited for applications that involve significant radial or axial loads, such as conveyor systems, heavy machinery, or automotive wheel bearings. Ball bearings, while having lower load capacity compared to roller bearings, are typically used in applications with lighter loads or high-speed requirements, such as electric motors, fans, and small machinery.

  • Friction and Speed:

Ball bearings generally have lower friction compared to roller bearings due to the point contact between the rolling elements and raceways. The lower friction results in reduced energy consumption and heat generation, making ball bearings more suitable for high-speed applications. Roller bearings, with their line contact, have slightly higher friction but offer better load distribution. However, advancements in bearing technology have led to the development of low-friction roller bearings, such as tapered roller bearings with optimized designs, for improved efficiency and reduced friction at high speeds.

  • Alignment and Misalignment:

Ball bearings are more forgiving when it comes to misalignment between the shaft and the housing. Their point contact allows for some angular misalignment without significantly affecting performance. Roller bearings, particularly spherical roller bearings, can also accommodate misalignment but to a lesser extent compared to ball bearings. Cylindrical roller bearings, on the other hand, are less forgiving and require precise alignment for optimal performance. Proper alignment is crucial for both types of bearings to ensure even load distribution and prevent premature wear or failure.

  • Application Specificity:

The choice between roller bearings and ball bearings depends on the specific application requirements. Roller bearings excel in heavy-duty applications where high load capacity and durability are essential. They are commonly used in industries such as mining, construction, and heavy machinery. Ball bearings, with their lower friction and suitability for high-speed operation, are preferred in applications that prioritize speed, precision, and efficiency, such as electric motors, machine tools, and automotive components.

In conclusion, roller bearings and ball bearings have distinct characteristics and are suitable for different types of applications. Roller bearings offer higher load capacity and better load distribution, making them ideal for heavy-duty applications. Ball bearings, with their lower friction and ability to accommodate misalignment, are well-suited for high-speed and precision applications. The choice between roller bearings and ball bearings depends on factors such as load requirements, speed, application specificity, and alignment considerations.

China Hot selling High Precision 30320A 30321A 30322A 30324A Tapered Roller Bearing Catalog for Automotive, Mining   with Good qualityChina Hot selling High Precision 30320A 30321A 30322A 30324A Tapered Roller Bearing Catalog for Automotive, Mining   with Good quality
editor by CX 2024-01-19

Roller Bearing

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