Product Description

Four row cylindrical roller bearings can carry much heavier radial load and shock load. They have higher precision and can be applied in the equipment which runs with high rotational speed. Grinding the surface of raceway and roller at same time after the inner ring is pressed on roller neck, it favors the improvement of rolling precision and the free adjustment of mounting clearance of bearings. These bearings are mostly applied to the working roller and backup roller of rolling mills and some other cases.
FC: double outer rings, single inner ring, and inner without flange.
FCD: double outer rings, double inner rings, and inner ring without flange.
FCDP: double outer rings, only have center flange, but with loose rib, double inner ring, inner without flange.

Bearing No.  
new FC3246168
used –  
Boundary dimension mm  
d 160
D 230
B 168
Fw 177
r1,2 min 2.1
r3,4 min 2.1
Rated load kn  
Cr 1050
Cor 2200
Reference code  
kg 22.8

For the medium and large size bearings,we usually pack it by wrapped belt and wooden case.This will avoid any damage to the bearing surface and make the bearing better performance when it arrives at the destination.Also,we can pack it by customer’s requirement.

Bearing No Dimension(mm) Basic Loading(kN) Mass(kg)
dxDxB Dyn.(Cr) Stat.(Cor)
FC2640125 130x200x125 530 1200 14.6
FC357120 150x225x120 645 1450 16.7
FC3246130 160x230x130 665 1705 16.9
FC3248124 160x240x124 685 1530 20.3
FC3248168 160x240x168 685 1530 26.4
FCD3446160 170x230x160 1100 2360 20
FC3452120 170x260x120 660 1790 24.6
FC3652124 180x260x124 735 1730 21.7
FC3652168 180x260x168 1070 2790 30.2
FC3652168/YA3 180x260x168 1070 2790 30.1
FC3854168 190x270x168 950 2430 30.2
FC3854168/YA3 190x270x168 950 2430 29.9
FC3854170/YA3 190x270x200 950 2430 30.2
FC4 0571 88 200x290x192 985 2580 35.7
FC4462192/YA3 220x310x192 1300 1910 45.8
FC4462225 220x320x210 1450 4050 53.9
FC4666206/YA3 230x330x206 1350 3800 56.5
FC4866220/YA3 240x330x220 1620 4850 56.5
FC4866220 240x330x220 1620 4850 56.7
FC4872220 240x360x200 1700 4410 78
FC4872220A/C4YA3 240x360x200 1700 4410 78
FC5 0571 20/YA3 250x360x220 1500 4250 76.9
FC5274200 260x370x200 1570 4250 73
FC5274220/YA3 260x370x220 1760 4900 79.2
FC5274220 260x370x220 1760 4900 80
FC5476230/YA3 270x380x230 1720 4800 80.2
FC5478230 270x390x236 2100 5950 97.8
FC5678220 280x390x220 1790 5150 86.5
FCDP5678275 280x390x275 2200 6250 102
FC6495710/YA3 320x450x240 2460 6720 119
FCD72157170 360x510x370 3850 11400 220
FCDP7415710 370x520x380 3900 12000 296
FCDP88124450 440x620x450 5200 15800 452
FCDP88124450/YA6 440x620x450 5200 15800 452
FCD96130450 480x650x450 4750 15400 419


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Cage: Brass
Heat Treatment: Bainite
Rolling Body: Roller Bearings
The Number of Rows: Multi-column
Outer Dimension: Large (200-430mm)
Material: Bearing Steel
US$ 125/Piece
1 Piece(Min.Order)

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Customized Request

steel ball bearing

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

Yes, I can provide guidance on the selection and sizing of steel ball bearings for specific applications. When choosing and sizing steel ball bearings, it is essential to consider various factors to ensure optimal performance and reliability. Here are some key considerations:

1. Load Requirements:

Determine the load requirements of your application, including the magnitude and direction of the loads. This information is crucial for selecting bearings with appropriate load capacities. Consider factors such as static loads, dynamic loads, impact loads, and axial or radial forces. Manufacturers provide load capacity ratings for different bearing types, and it is important to choose bearings that can handle the anticipated loads without excessive deflection or premature failure.

2. Speed and Operating Conditions:

Understand the speed and operating conditions of your application. Consider factors such as rotational speed, temperature, humidity, and the presence of contaminants or corrosive substances. High-speed applications may require bearings with lower friction and improved heat dissipation, while harsh environments may necessitate bearings with enhanced corrosion resistance or sealing capabilities. Select bearings that are designed to withstand the specific operating conditions of your application.

3. Shaft and Housing Dimensions:

Take into account the dimensions of the shaft and housing in which the bearings will be mounted. Bearings should be properly sized to match the shaft and housing diameters, ensuring a proper fit and alignment. Consider factors such as shaft tolerances, shaft hardness, and the type of fit required (e.g., clearance fit, interference fit). Manufacturers provide guidelines and calculation methods to determine the appropriate bearing size based on the shaft and housing dimensions.

4. Bearing Type and Configuration:

Choose the appropriate bearing type and configuration based on the specific requirements of your application. Common types of steel ball bearings include deep groove ball bearings, angular contact ball bearings, thrust ball bearings, and self-aligning ball bearings. Each type has its own design features and load-carrying capabilities. Additionally, consider factors such as the number and arrangement of balls, cage design, and the presence of seals or shields. These factors affect the bearing’s performance, speed capability, and ability to handle axial or radial loads.

5. Lubrication and Maintenance:

Consider the lubrication requirements and maintenance considerations of the bearings. Proper lubrication is essential for reducing friction, preventing wear, and extending the bearing’s service life. Determine the lubrication method (grease or oil), the required lubricant type, and the re-lubrication intervals. Some applications may require bearings with built-in lubrication systems or special lubrication features. Additionally, consider the accessibility for maintenance and the ease of bearing replacement, particularly in applications with frequent bearing changes or limited maintenance access.

6. Industry Standards and Regulations:

Be aware of industry standards, regulations, or specific requirements that apply to your application. In certain industries, such as aerospace, automotive, or medical, there may be specific standards or certifications that the bearings need to meet. Ensure that the selected bearings comply with the necessary standards and regulations to guarantee their suitability for the intended application.

7. Consult with Manufacturers or Experts:

If you are unsure about the selection and sizing of steel ball bearings for your specific application, it is advisable to consult with bearing manufacturers or industry experts. They can provide valuable guidance based on their expertise and experience. Manufacturers often have engineering support teams that can assist in selecting the most appropriate bearings for your application, taking into account the specific requirements and constraints.

By considering these factors and seeking expert advice when needed, you can make informed decisions regarding the selection and sizing of steel ball bearings for your specific applications. This ensures optimal performance, reliability, and longevity of the bearings in your industrial systems.

steel ball bearing

What are the potential challenges or limitations associated with using steel ball bearings in specific industries?

While steel ball bearings offer numerous advantages, there are also certain challenges and limitations associated with their use in specific industries. Let’s explore some of these potential challenges:

1. Corrosion:

Steel ball bearings are susceptible to corrosion, especially when exposed to moisture, harsh chemicals, or corrosive environments. Corrosion can lead to pitting, surface damage, and premature failure of the bearings. In industries such as marine, offshore, or chemical processing, where exposure to corrosive elements is common, alternative bearing materials or protective coatings may be required to mitigate the effects of corrosion.

2. High-Temperature Applications:

Extreme temperatures can pose challenges for steel ball bearings. At high temperatures, the lubricants may degrade, resulting in inadequate lubrication and increased friction. The heat generated during operation can also cause thermal expansion, leading to improper clearances or interference fits. In industries such as aerospace, automotive, or industrial ovens, where high temperatures are prevalent, specialized high-temperature bearing materials and lubricants may be necessary to ensure reliable performance.

3. Contamination and Cleanliness:

Contamination by dust, dirt, or particles can affect the performance and lifespan of steel ball bearings. Industries such as mining, construction, or agriculture often expose bearings to harsh and dusty environments, increasing the risk of contamination. Regular maintenance, proper sealing methods, and implementing effective contamination control measures are essential to minimize the adverse effects of contamination on the bearings.

4. Axial and Radial Loads:

Steel ball bearings have specific load capacity limits, both axially and radially. Exceeding these limits can result in increased stress, deformation, or premature failure. In industries where heavy loads are encountered, such as heavy machinery, construction equipment, or wind turbines, it is crucial to select bearings with appropriate load ratings and consider factors such as load distribution, shaft deflection, and operating conditions to ensure reliable performance.

5. Vibration and Noise:

Steel ball bearings can generate vibration and noise, particularly at high speeds or in applications with unbalanced loads. Excessive vibration and noise can impact the overall system performance and cause discomfort or safety concerns. In industries such as precision machining, robotics, or medical equipment, where low vibration and noise levels are crucial, additional measures such as vibration dampening, precision balancing, or alternative bearing designs may be necessary.

6. Speed Limitations:

Although steel ball bearings are designed to operate at high speeds, there are limitations imposed by factors such as ball size, cage design, lubrication, and centrifugal forces. Exceeding the recommended speed limits can lead to increased heat generation, ball skidding, or cage failure. In industries such as aerospace, automotive racing, or high-speed machinery, specialized high-speed bearing designs or alternative bearing technologies, such as ceramic bearings, may be utilized to achieve the desired performance at extreme speeds.

7. Specialized Environments:

Some industries present unique challenges that may require specialized bearing solutions beyond the capabilities of steel ball bearings. For example, industries involving cryogenic temperatures, vacuum environments, or ultrahigh precision applications may necessitate alternative bearing materials, lubricants, or designs to ensure optimal performance and reliability.

By understanding and addressing these potential challenges and limitations, industries can make informed decisions regarding the selection, application, and maintenance of steel ball bearings or explore alternative bearing options that better suit their specific requirements.

steel ball bearing

How do steel ball bearings contribute to reduced friction and smooth operation in machinery?

Steel ball bearings play a critical role in reducing friction and ensuring smooth operation in various machinery and mechanical systems. Let’s explore how steel ball bearings achieve these benefits:

1. Rolling Motion: Steel ball bearings operate on the principle of rolling motion. The small spherical balls within the bearing roll between the inner and outer raceways, rather than sliding against each other. This rolling motion significantly reduces friction compared to sliding friction that occurs in plain bearings or bushings. As a result, steel ball bearings minimize energy losses due to friction and enable more efficient operation of machinery.

2. Point Contact: Steel ball bearings feature point contact between the balls and the raceways. This means that only a small area of the ball is in contact with the raceway at any given time. Point contact reduces the contact surface area and, consequently, the frictional resistance. The reduced friction allows the bearing to rotate more freely and with minimal energy loss.

3. Lubrication: Proper lubrication is crucial for the smooth operation of steel ball bearings. Lubricants such as grease or oil are used to reduce friction and wear between the balls and the raceways. Lubrication forms a thin film between the contacting surfaces, providing a barrier that prevents direct metal-to-metal contact. This lubricating film further reduces friction and dissipates heat, improving the overall performance and longevity of the bearing.

4. Precision Manufacturing: Steel ball bearings are manufactured with high precision and tight tolerances. The dimensions, roundness, and surface finish of the balls and raceways are carefully controlled during the manufacturing process. This precision ensures that the balls roll smoothly and with minimal resistance within the bearing. The precise fit between the balls and the raceways contributes to reduced friction and promotes smooth operation.

5. Material Properties: Steel ball bearings are typically made from high-quality steel alloys that exhibit excellent mechanical properties. The steel used in ball bearings is hardened and heat-treated to enhance its strength, durability, and resistance to wear. These material properties allow the bearings to withstand high loads and provide reliable performance over extended periods. The smooth and hard surface of the steel balls also reduces friction and wear between the balls and the raceways.

6. Cage or Retainer: In many steel ball bearings, a cage or retainer is used to separate and maintain proper spacing between the balls. The cage prevents the balls from touching or rubbing against each other, ensuring smooth rolling motion. It also helps to distribute the load evenly among the balls, reducing stress concentrations and minimizing frictional resistance.

7. Noise and Vibration Reduction: Steel ball bearings contribute to the reduction of noise and vibration in machinery. The rolling motion of the balls and the precise fit between the balls and raceways minimize the occurrence of undesirable vibrations and noise generated by friction. This is particularly important in applications where quiet operation is essential, such as in precision machinery or automotive components.

In summary, steel ball bearings reduce friction and enable smooth operation in machinery through rolling motion, point contact, proper lubrication, precision manufacturing, high-quality materials, the use of cages or retainers, and noise/vibration reduction. These factors combined make steel ball bearings essential components in a wide range of applications, contributing to improved efficiency, durability, and performance of machinery and mechanical systems.

China factory Four Row Cylindrical Roller Bearing for Rolling Mills FC3246168 Spherical Roller Bearing/Angular Contact Ball Bearing/Thrust Roller Bearing/Steel Plant Bearing   bearing driver kitChina factory Four Row Cylindrical Roller Bearing for Rolling Mills FC3246168 Spherical Roller Bearing/Angular Contact Ball Bearing/Thrust Roller Bearing/Steel Plant Bearing   bearing driver kit
editor by CX 2024-04-08

Steel Ball Bearings

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