1. Introduction of Tapered Roller Bearing
In the fast-paced world of mechanical engineering and industrial manufacturing, bearings play a crucial role in ensuring the smooth operation and longevity of various machinery and equipment. Among the diverse types of bearings available, tapered roller bearings have garnered significant attention due to their unique design and ability to handle combined radial and axial loads. For companies like BYWB Bearing, which is dedicated to providing high-quality bearing solutions, understanding the intricacies of tapered roller bearings is essential for both engineers and maintenance professionals.
Tapered roller bearings are specifically engineered to accommodate the complex demands of heavy machinery, automotive applications, and industrial equipment. Their design allows for the efficient transmission of forces, ensuring that both radial and thrust loads are managed effectively. As a result, these bearings are widely utilized in environments where performance, durability, and reliability are critical.
This article provides an in-depth look at tapered roller bearings, focusing on their fundamental characteristics, essential components, as well as their advantages and disadvantages. We will explore the various types of tapered roller bearings available in the market, examine their specific applications, and compare them to other bearing types, such as cylindrical roller bearings. Additionally, a comprehensive taper roller bearing size chart is provided to assist professionals in selecting the appropriate bearing for their particular needs.
By gaining a thorough understanding of tapered roller bearings, engineers, technicians, and industry professionals can make informed decisions when it comes to bearing selection, installation, and maintenance, ultimately contributing to improved machine performance and operational efficiency.
2. What is a Tapered Roller Bearing?
A tapered roller bearing is a type of rolling-element bearing designed to support both radial and axial loads simultaneously. Its unique design includes inner and outer rings with tapered raceways that accommodate tapered rollers. The rollers are arranged in such a way that they are wider at one end than the other, allowing them to transmit forces efficiently between the inner and outer rings. This configuration not only increases the load capacity of the bearing but also ensures that forces are distributed evenly, reducing wear and enhancing performance in demanding applications.
One of the key features of a tapered roller bearing is its ability to handle combined loading conditions. Unlike other bearing types that may only support radial loads, tapered roller bearings are engineered to manage both the lateral forces that act perpendicular to the shaft and the thrust forces that act parallel to it. This makes them an ideal choice for heavy-duty applications in automotive, industrial, and machinery sectors, where high precision and reliability are required.
The design of a tapered roller bearing is a result of years of engineering evolution and innovation. By utilizing a series of tapered rollers, these bearings are able to achieve a higher contact angle compared to other roller bearings. This increased contact angle allows for the conversion of radial load into thrust load, thus optimizing the overall performance of the bearing. In addition, the unique geometry of tapered rollers contributes to a greater distribution of stress across the bearing’s contact surfaces, which ultimately extends the life of the bearing.
In addition, tapered roller bearings offer exceptional energy efficiency and operational stability. Their refined design minimizes friction and heat generation, which enhances overall performance. This innovation ensures a longer lifespan and lower maintenance costs, making tapered roller bearings a reliable and cost-effective solution in heavy-load applications. These benefits make them indispensable in modern machinery industries worldwide adoption.
3. Components of Tapered Roller Bearings
Cup and Cone: The cup includes the outer ring in which the bearings ride. The non-separable cone assembly consists of the inner ring, rollers, and cage. In the raceways where the rollers operate, there is an angle corresponding to the rollers’ taper. The inner raceway is called a cone, while the outer raceway is called a cup. The cage, also known as a retainer, separates the rollers, ensuring even load distribution and smooth rotation. The angled surfaces of the rollers, cones, and cups actively align them; the cage mainly serves to evenly space the rollers and hold them together.
Rollers (Axial And Radial Loads): Tapered cylindrical rollers are used in these bearings. The contact angle and number of rows determine the load type and capacity of the bearing. The number of rollers on a bearing can increase its load-bearing capacity.
Cages: Different than the cages in other bearing types, the most common type of cage is the pin cage. As part of the inner core assembly, the cage helps distribute the roller units.
Lubrication- helps reduce friction, noise, heat, etc., between rollers and raceways. Several lubricants are used, including synthetic oil, petroleum-based oil, silicone-based oil, greases, dry films, etc.
Seals- effectively prevent the bearing from impeding by environmental contaminants and moisture. Impurities may affect the proper functioning of the bearing.
Another important component is the cage or retainer. The cage plays a vital role in keeping the rollers evenly spaced, preventing them from coming into contact with one another, which could lead to friction and premature failure. It also helps in guiding the rollers during operation, maintaining the correct alignment and optimal performance of the bearing. In some designs, lubrication channels are integrated into the cage or rings, which ensures that the rolling elements are adequately lubricated, further enhancing durability and performance.
4. Advantages and Disadvantages of Tapered Roller Bearings
Tapered roller bearings offer a variety of advantages that make them a popular choice in many heavy-load applications. One of the primary benefits is their ability to support both radial and axial loads simultaneously, which eliminates the need for additional bearing components in a design. This dual load capacity simplifies mechanical systems and contributes to overall compactness and efficiency. The design of tapered roller bearings ensures an even distribution of stress, reducing wear on individual components and extending the service life of the bearing.
Another significant advantage is the enhanced load-carrying capacity. The tapered design increases the contact angle between the rollers and the raceways, enabling the bearing to handle higher forces without deforming. Additionally, the robust construction and precision manufacturing allow these bearings to operate reliably in harsh environments, including high-speed and heavy-duty applications. Their ability to convert radial loads into axial forces is particularly beneficial in applications such as automotive wheels, gearboxes, and heavy machinery, where stability and performance are crucial.
Despite these advantages, tapered roller bearings do have certain disadvantages. Their complex design requires precise manufacturing and assembly, which can increase production costs. Maintenance and lubrication are also critical; improper lubrication can lead to increased friction and early failure. Additionally, because they are designed to handle high loads, tapered roller bearings may not be suitable for applications where only light loads are present, as the design might be unnecessarily robust and less efficient for such cases.
Furthermore, installation procedures for tapered roller bearings are more stringent. Misalignment or incorrect mounting can lead to uneven load distribution, resulting in premature wear or failure. However, when installed and maintained correctly, the benefits of tapered roller bearings often outweigh these drawbacks. Manufacturers continue to improve design tolerances and lubrication techniques to mitigate potential issues, ensuring that these bearings remain a reliable choice in demanding industrial and automotive applications. Overall, the advantages of tapered roller bearings include improved load distribution, enhanced durability, and superior performance under extreme conditions. While they require precise installation and careful maintenance, these bearings are engineered to deliver outstanding reliability and efficiency, making them a critical component in high-performance mechanical systems for consistently superior operational performance.
5. Types of Tapered Roller Bearings
Tapered roller bearings are essential components in many industrial and automotive applications because of their unique ability to handle both radial and axial loads. Choosing the right bearing depends on understanding the classification systems used by manufacturers. Two primary classifications are by structure and by size. The table below summarizes these categories:
| Category | Options |
| By Structure | Single Row Tapered Roller Bearing, Double Row Tapered Roller Bearing |
| By Size | Metric, Inch Type |
The structure of a tapered roller bearing determines how the rollers are arranged and directly affects the load capacity and application suitability.
Single Row Tapered Roller Bearings:
These bearings feature one row of tapered rollers positioned between an inner and an outer ring. Their design is simpler and more compact, making them ideal for applications where space is limited and load requirements are moderate. They are frequently used in automotive hubs and light machinery where cost efficiency and ease of installation are priorities.
Double Row Tapered Roller Bearings:
In contrast, double row bearings consist of two rows of tapered rollers. This design offers enhanced load-carrying capacity and improved load distribution. The dual row arrangement is particularly beneficial in heavy-duty applications, such as large wheel assemblies and industrial machinery, where both high radial and axial forces are common. Their robust design ensures longer service life and greater stability under extreme conditions.
By Size
Another important aspect is the measurement system used to define bearing dimensions, which is crucial for compatibility with equipment design.
Metric Bearings:
These bearings follow the International System of Units (SI), making them the standard choice in many parts of the world. They provide precise dimensions that match machinery designed with metric measurements, ensuring consistency and accuracy in performance.
Inch Type Bearings:
Alternatively, inch type bearings are based on Imperial measurements. They are predominantly used in regions where machinery is built to inch-based dimensions, such as North America. This classification helps ensure that the bearings meet the specific size requirements of equipment designed using the Imperial system.
By classifying tapered roller bearings by both structure and size, engineers and technicians can more easily select the right bearing for each application. Whether choosing a single row for simpler, lighter loads or a double row for heavy-duty demands, and whether working with metric or inch measurements, these classifications provide a clear framework to optimize performance and reliability in diverse operating environments.
6. Applications of Tapered Roller Bearings
Tapered roller bearings are widely used in a multitude of applications across various industries due to their ability to handle combined loads and their robust construction. One of the primary applications is in the automotive industry, where these bearings are used in wheel hubs, transmissions, and gearboxes. Their design allows for the efficient handling of both radial and thrust loads, which is essential for the high-performance demands of modern vehicles.
Heavy equipment :such as excavators, mining machines, and agricultural machinery. These applications require bearings that can withstand harsh operating conditions, including high loads, vibrations, and temperature fluctuations. The durability and efficiency of tapered roller bearings make them an ideal choice for such demanding environments, ensuring minimal downtime and reliable performance.
Gearboxes: which are critical components in various mechanical systems, also benefit significantly from the use of tapered roller bearings. By supporting both radial and axial forces, these bearings help maintain the alignment of gears and reduce friction within the system. This results in smoother operation, improved energy efficiency, and extended equipment life.
Additionally, tapered roller bearings find applications in wind turbines and other renewable energy systems, where they support the large loads generated by rotating blades. In the construction industry, these bearings are employed in cranes and other heavy lifting equipment, where their high load-carrying capacity is essential for safe and efficient operation.
Other applications include the use of tapered roller bearings in industrial fans, compressors, and machine tools, where their ability to operate under high stress and at high speeds is crucial. The versatility of these bearings is further enhanced by their adaptability to various lubrication methods, which can be tailored to meet specific operational requirements. As a result, tapered roller bearings are an indispensable component in the design and maintenance of modern mechanical systems, contributing to increased productivity and reliability in a wide range of sectors.
7. Differences Between Cylindrical Roller Bearings and Tapered Roller Bearings
Cylindrical roller bearings and tapered roller bearings are two commonly used types of bearings in industrial applications, each with unique characteristics suited to different load conditions. Cylindrical roller bearings are designed primarily to support high radial loads and have cylindrical rollers that roll along a curved raceway. Their design typically results in low friction and high speed capabilities, making them ideal for applications where rotation speed is a critical factor. However, these bearings are generally not capable of handling significant axial loads.
In contrast, tapered roller bearings are engineered to support both radial and axial loads simultaneously. Their rollers are tapered, meaning they have a conical shape that allows for a greater contact angle between the roller and the raceway. This design feature enables tapered roller bearings to convert radial forces into axial thrust, providing a higher load-carrying capacity. Additionally, the structure of tapered roller bearings typically includes two separate races or a common inner ring with two rows of tapered rollers, which further enhances their ability to manage combined loads.
Another difference lies in their construction and installation. Cylindrical roller bearings tend to be simpler in design, which can translate into lower manufacturing and maintenance costs. On the other hand, the more complex geometry of tapered roller bearings requires greater precision during manufacturing and installation. This complexity, while contributing to higher performance under heavy load conditions, also demands careful attention to alignment and lubrication.
Furthermore, the operating conditions of these bearings differ. Cylindrical roller bearings are often used in applications where high rotational speeds are required without significant axial forces, such as electric motors and machine tools. Conversely, tapered roller bearings are found in automotive hubs, heavy machinery, and applications where both high radial and axial forces are present. Understanding these differences is essential for engineers to select the appropriate bearing type for a specific application, ensuring both optimal performance and longevity.
Moreover, the selection between cylindrical and tapered roller bearings is influenced by the specific demands of the machinery, operational environment, and maintenance capabilities. Careful evaluation of load conditions and performance requirements will guide engineers in choosing the most efficient bearing type for each unique application.
8. Taper Roller Bearing Size Chart
Tapered Roller Bearing(Metric size) size chart
| Bearing o. | Boundary dimensions | Basic load ratings | Limiting speeds | Mass | ||||||||
| mm | KN | RPM | KG | |||||||||
| d | D | T | B | C | Rmin | rmin | Dynamic Cr | Static Cor | Grease | Oil | ||
| 30202 | 15 | 35 | 11.75 | 11 | 10 | 0.6 | 0.6 | 11.9 | 13.5 | 9000 | 13000 | 0.053 |
| 30302 | 15 | 42 | 14.25 | 13 | 11 | 1 | 1 | 22.9 | 21.7 | 9900 | 13000 | 0.098 |
| 30203 | 17 | 40 | 13.25 | 12 | 11 | 1 | 1 | 20.7 | 22.2 | 9900 | 13000 | 0.08 |
| 30303 | 17 | 47 | 15.25 | 14 | 12 | 1 | 1 | 28.3 | 27.4 | 8500 | 12000 | 0.134 |
| 32004 | 20 | 42 | 15 | 15 | 12 | 0.6 | 0.6 | 22.9 | 15.6 | 9500 | 13000 | 0.097 |
| 30204 | 20 | 47 | 15.25 | 14 | 12 | 1 | 1 | 28.2 | 30.9 | 8800 | 12000 | 0.127 |
| 32204 | 20 | 47 | 19.25 | 18 | 15 | 1 | 1 | 36.5 | 39.5 | 8000 | 11000 | 0.161 |
| 30304 | 20 | 52 | 16.25 | 15 | 13 | 1.5 | 1.5 | 33.2 | 33.3 | 8000 | 11000 | 0.169 |
| 32304 | 20 | 52 | 22.25 | 21 | 18 | 1.5 | 1.5 | 41.3 | 46.4 | 7500 | 10000 | 0.245 |
| 32005 | 25 | 47 | 15 | 15 | 11.5 | 0.6 | 0.6 | 27 | 32.5 | 7900 | 11000 | 0.114 |
| 30205 | 25 | 52 | 16.25 | 15 | 13 | 1 | 1 | 33.7 | 39.4 | 7500 | 10000 | 0.154 |
| 32205 | 25 | 52 | 19.25 | 18 | 16 | 1 | 1 | 42 | 47 | 7300 | 9800 | 0.187 |
| 33205 | 25 | 52 | 22 | 22 | 18 | 1 | 1 | 47.3 | 56 | 6700 | 9000 | 0.217 |
| 30305 | 25 | 62 | 18.25 | 17 | 15 | 1.5 | 1.5 | 47 | 48.3 | 6000 | 8000 | 0.272 |
| 31305 | 25 | 62 | 18.25 | 17 | 13 | 1.5 | 1.5 | 40.7 | 46 | 5600 | 7500 | 0.268 |
| 32305 | 25 | 62 | 25.25 | 24 | 20 | 1.5 | 1.5 | 61.7 | 68.9 | 6000 | 8000 | 0.37 |
| 32006 | 30 | 55 | 17 | 17 | 13 | 1 | 1 | 33.6 | 44 | 6700 | 9000 | 0.17 |
| 30206 | 30 | 62 | 17.25 | 16 | 14 | 1 | 1 | 43.3 | 50.6 | 6300 | 8400 | 0.233 |
| 32206 | 30 | 62 | 21.25 | 20 | 17 | 1 | 1 | 51.8 | 63.9 | 6300 | 8400 | 0.3 |
| 33206 | 30 | 62 | 25 | 25 | 19.5 | 1 | 1 | 64.4 | 76.5 | 5600 | 7500 | 0.37 |
| 30306 | 30 | 72 | 20.75 | 19 | 16 | 1.5 | 1.5 | 59 | 63 | 5700 | 7600 | 0.4 |
| 31306 | 30 | 72 | 20.75 | 19 | 14 | 1.5 | 1.5 | 47.5 | 50 | 5000 | 6700 | 0.398 |
| 32306 | 30 | 72 | 28.75 | 27 | 23 | 1.5 | 1.5 | 81.7 | 97.6 | 5300 | 7000 | 0.56 |
| 32007 | 35 | 62 | 18 | 18 | 14 | 1 | 1 | 42.9 | 54 | 6000 | 8000 | 0.227 |
| 30207 | 35 | 72 | 18.25 | 17 | 15 | 1.5 | 1.5 | 54.2 | 63.7 | 5300 | 7000 | 0.337 |
| 32207 | 35 | 72 | 24.25 | 23 | 19 | 1.5 | 1.5 | 70.6 | 89.7 | 5300 | 7000 | 0.45 |
| 33207 | 35 | 72 | 28 | 28 | 22 | 1.5 | 1.5 | 84.2 | 106 | 4800 | 6300 | 0.522 |
| 30307 | 35 | 80 | 22.75 | 21 | 18 | 2 | 1.5 | 75.4 | 83.6 | 5000 | 6600 | 0.484 |
| 31307 | 35 | 80 | 22.75 | 21 | 15 | 2 | 1.5 | 61.6 | 67 | 4500 | 6000 | 0.518 |
| 32307 | 35 | 80 | 32.75 | 31 | 25 | 2 | 1.5 | 99 | 119 | 4800 | 6300 | 0.77 |
| 32008 | 40 | 68 | 19 | 19 | 14.5 | 1 | 1 | 52.8 | 71 | 5300 | 7000 | 0.278 |
| 33008 | 40 | 68 | 22 | 22 | 18 | 1 | 1 | 56 | 44.7 | 5200 | 7000 | 0.312 |
| 33108 | 40 | 75 | 26 | 26 | 20.5 | 1.5 | 1.5 | 79.2 | 104 | 5000 | 6700 | 0.422 |
| 30208 | 40 | 80 | 19.75 | 18 | 16 | 1.5 | 1.5 | 63 | 74.1 | 4800 | 6300 | 0.422 |
| 32208 | 40 | 80 | 24.75 | 23 | 19 | 1.5 | 1.5 | 77 | 97 | 4800 | 6300 | 0.535 |
| 33208 | 40 | 80 | 32 | 32 | 25 | 1.5 | 1.5 | 105 | 132 | 4300 | 5600 | 0.535 |
| 30308 | 40 | 90 | 25.25 | 23 | 20 | 2 | 1.5 | 90 | 108 | 4300 | 5600 | 0.75 |
| 31308 | 40 | 90 | 25.25 | 23 | 17 | 2 | 1.5 | 81 | 96 | 4000 | 5300 | 0.73 |
| 32308 | 40 | 90 | 35.25 | 33 | 27 | 2 | 1.5 | 115 | 149 | 4000 | 5300 | 1.05 |
| 32009 | 45 | 75 | 20 | 20 | 15.5 | 1 | 1 | 58 | 80 | 4800 | 6300 | 0.33 |
| 33009 | 45 | 75 | 24 | 24 | 19 | 1 | 1 | 62.6 | 50 | 4800 | 6400 | 0.45 |
| 33109 | 45 | 80 | 26 | 26 | 20.5 | 1.5 | 1.5 | 84 | 114 | 4500 | 6000 | 0.56 |
| 30209 | 45 | 85 | 20.75 | 19 | 16 | 1.5 | 1.5 | 67 | 84 | 4500 | 6000 | 0.48 |
| 32209 | 45 | 85 | 24.75 | 23 | 19 | 1.5 | 1.5 | 80 | 105 | 4400 | 5900 | 0.58 |
| 33209 | 45 | 85 | 32 | 32 | 24.5 | 1.5 | 1.5 | 108 | 143 | 4000 | 5300 | 0.82 |
| 30309 | 45 | 100 | 27.25 | 25 | 22 | 2 | 1.5 | 108 | 120 | 4000 | 5300 | 0.98 |
| 31309 | 45 | 100 | 27.25 | 25 | 18 | 2 | 1.5 | 91 | 102 | 3400 | 4500 | 0.95 |
| 32309 | 45 | 100 | 38.25 | 36 | 30 | 2 | 1.5 | 145 | 191 | 3600 | 4800 | 1.4 |
| 32910 | 50 | 72 | 15 | 15 | 12 | 0.6 | 0.6 | 35.5 | 60 | 4700 | 6300 | 0.191 |
| 32010 | 50 | 80 | 20 | 20 | 15.5 | 1 | 1 | 60 | 88 | 4500 | 6000 | 0.366 |
| 33010 | 50 | 80 | 24 | 24 | 19 | 1 | 1 | 64 | 56 | 4400 | 5800 | 0.433 |
| 33110 | 50 | 85 | 26 | 26 | 20 | 1.5 | 1.5 | 70 | 122 | 4200 | 5600 | 0.58 |
| 30210 | 50 | 90 | 21.75 | 20 | 17 | 1.5 | 1.5 | 76 | 97 | 4300 | 5600 | 0.54 |
| 32210 | 50 | 90 | 24.75 | 23 | 19 | 1.5 | 1.5 | 76 | 97 | 4300 | 5600 | 0.648 |
| 33210 | 50 | 90 | 32 | 32 | 24.5 | 1.5 | 1.5 | 114 | 160 | 3800 | 5000 | 0.9 |
| 30310 | 50 | 110 | 29.25 | 27 | 23 | 2.5 | 2 | 130 | 159 | 3600 | 4800 | 1.28 |
| 31310 | 50 | 110 | 29.25 | 27 | 19 | 2.5 | 2 | 106 | 120 | 3200 | 4300 | 1.22 |
| 32310 | 50 | 110 | 42.25 | 40 | 33 | 2.5 | 2 | 177 | 239 | 3200 | 4300 | 1.9 |
| 32911 | 55 | 80 | 17 | 17 | 14 | 1 | 1 | 44.5 | 35.6 | 4300 | 5700 | 0.274 |
| 32011 | 55 | 90 | 23 | 23 | 17.5 | 1.5 | 1.5 | 80 | 116 | 4000 | 5400 | 0.55 |
| 33011 | 55 | 90 | 27 | 27 | 21 | 1.5 | 1.5 | 84.2 | 75 | 4000 | 5400 | 0.643 |
| 33111 | 55 | 95 | 30 | 30 | 23 | 1.5 | 1.5 | 110 | 156 | 3800 | 5000 | 0.85 |
| 30211 | 55 | 100 | 22.75 | 21 | 18 | 2 | 1.5 | 90 | 116 | 3700 | 4900 | 0.71 |
| 32211 | 55 | 100 | 26.75 | 25 | 21 | 2 | 1.5 | 108 | 144 | 3700 | 4900 | 0.86 |
| 33211 | 55 | 100 | 35 | 35 | 27 | 2 | 1.5 | 138 | 190 | 3400 | 4500 | 1.2 |
| 30311 | 55 | 120 | 31.5 | 29 | 25 | 2.5 | 2 | 150 | 190 | 3300 | 4400 | 1.6 |
| 31311 | 55 | 120 | 31.5 | 29 | 21 | 2.5 | 2 | 130 | 158 | 2900 | 3800 | 1.56 |
| 32311 | 55 | 120 | 45.5 | 43 | 35 | 2.5 | 2 | 203 | 274 | 3000 | 4000 | 2.37 |
| 32912 | 60 | 85 | 17 | 17 | 14 | 1 | 1 | 46 | 36.8 | 4000 | 5300 | 0.294 |
| 32012 | 60 | 95 | 23 | 23 | 17.5 | 1.5 | 1.5 | 82 | 122 | 3800 | 5000 | 0.586 |
| 33012 | 60 | 95 | 27 | 27 | 21 | 1.5 | 1.5 | 85.8 | 78 | 3700 | 4900 | 0.684 |
| 33112 | 60 | 100 | 30 | 30 | 23 | 1.5 | 1.5 | 117 | 170 | 3600 | 4700 | 0.912 |
| 30212 | 60 | 110 | 23.75 | 22 | 19 | 2 | 1.5 | 103 | 132 | 3400 | 4500 | 0.91 |
| 32212 | 60 | 110 | 29.75 | 28 | 24 | 2 | 1.5 | 132 | 181 | 3400 | 4500 | 1.18 |
| 33212 | 60 | 110 | 38 | 38 | 29 | 2 | 1.5 | 168 | 250 | 3000 | 4000 | 1.6 |
| 30312 | 60 | 130 | 33.5 | 31 | 26 | 3 | 2.5 | 170 | 211 | 3000 | 4000 | 1.96 |
| 31312 | 60 | 130 | 33.5 | 31 | 22 | 3 | 2.5 | 144 | 176 | 2700 | 3600 | 1.9 |
| 32312 | 60 | 130 | 48.5 | 46 | 37 | 3 | 2.5 | 226 | 306 | 2600 | 3600 | 2.95 |
| 32913 | 65 | 90 | 17 | 17 | 14 | 1 | 1 | 48.5 | 38.8 | 3700 | 4900 | 0.315 |
| 32013 | 65 | 100 | 23 | 23 | 17.5 | 1.5 | 1.5 | 84 | 127 | 3400 | 4600 | 0.63 |
| 33013 | 65 | 100 | 27 | 27 | 21 | 1.5 | 1.5 | 91.3 | 83 | 3400 | 4600 | 0.732 |
| 33113 | 65 | 110 | 34 | 34 | 26.5 | 1.5 | 1.5 | 142 | 208 | 3200 | 4300 | 1.28 |
| 30213 | 65 | 120 | 24.75 | 23 | 20 | 2 | 1.5 | 120 | 154 | 3100 | 4200 | 1.14 |
| 32213 | 65 | 120 | 32.75 | 31 | 27 | 2 | 1.5 | 160 | 224 | 3000 | 4000 | 1.55 |
| 33213 | 65 | 120 | 41 | 41 | 32 | 2 | 1.5 | 194 | 270 | 2800 | 3800 | 2.03 |
| 30313 | 65 | 140 | 36 | 33 | 28 | 3 | 2.5 | 195 | 244 | 2600 | 3700 | 2.45 |
| 31313 | 65 | 140 | 36 | 33 | 23 | 3 | 2.5 | 165 | 202 | 2300 | 3300 | 2.4 |
| 32313 | 65 | 140 | 51 | 48 | 39 | 3 | 2.5 | 258 | 353 | 2400 | 3400 | 3.5 |
| 32914 | 70 | 100 | 20 | 20 | 16 | 1 | 1 | 68.5 | 60 | 3400 | 4600 | 0.49 |
| 32014 | 70 | 110 | 25 | 25 | 19 | 1.5 | 1.5 | 101 | 153 | 3200 | 4200 | 0.85 |
| 33014 | 70 | 110 | 31 | 31 | 25.5 | 1.5 | 1.5 | 121 | 108 | 3200 | 4200 | 1.07 |
| 33114 | 70 | 120 | 37 | 37 | 29 | 2 | 1.5 | 172 | 250 | 3000 | 4000 | 1.7 |
| 30214 | 70 | 125 | 26.25 | 24 | 21 | 2 | 1.5 | 132 | 174 | 3000 | 3900 | 1.26 |
| 32214 | 70 | 125 | 33.25 | 31 | 27 | 2 | 1.5 | 168 | 238 | 2800 | 3800 | 1.62 |
| 33214 | 70 | 125 | 41 | 41 | 32 | 2 | 1.5 | 201 | 285 | 2600 | 3600 | 2.1 |
| 30314 | 70 | 150 | 38 | 35 | 30 | 3 | 2.5 | 187 | 220 | 2000 | 3000 | 2.98 |
| 31314 | 70 | 150 | 38 | 35 | 25 | 3 | 2.5 | 218 | 274 | 2300 | 3400 | 2.95 |
| 32314 | 70 | 150 | 54 | 51 | 42 | 3 | 2.5 | 298 | 413 | 2000 | 3000 | 4.35 |
| 32915 | 75 | 105 | 20 | 20 | 16 | 1 | 1 | 69.5 | 60 | 3200 | 4300 | 0.51 |
| 32015 | 75 | 115 | 25 | 25 | 19 | 1.5 | 1.5 | 106 | 163 | 3000 | 4000 | 0.89 |
| 33015 | 75 | 115 | 31 | 31 | 25.5 | 1.5 | 1.5 | 128 | 122 | 3000 | 4000 | 1.13 |
| 33115 | 75 | 125 | 37 | 37 | 29 | 2 | 1.5 | 176 | 265 | 2800 | 3800 | 1.76 |
| 30215 | 75 | 130 | 27.25 | 25 | 22 | 2 | 1.5 | 137 | 186 | 2700 | 3600 | 1.37 |
| 32215 | 75 | 130 | 33.25 | 31 | 27 | 2 | 1.5 | 169 | 244 | 2600 | 3600 | 1.74 |
| 33215 | 75 | 130 | 41 | 41 | 31 | 2 | 1.5 | 209 | 300 | 2400 | 3400 | 2.25 |
| 30615 | 75 | 135 | 44.5 | 45 | 36.5 | 2.5 | 2 | 228 | 287 | 3000 | 3800 | 2.7 |
| 30315 | 75 | 160 | 40 | 37 | 31 | 3 | 2.5 | 250 | 318 | 2200 | 3200 | 3.57 |
| 31315 | 75 | 160 | 40 | 37 | 26 | 3 | 2.5 | 209 | 245 | 2000 | 2800 | 3.4 |
| 32315 | 75 | 160 | 58 | 55 | 45 | 3 | 2.5 | 346 | 488 | 2000 | 3000 | 5.4 |
| 32916 | 80 | 110 | 20 | 20 | 16 | 1 | 1 | 72 | 41.2 | 3000 | 4000 | 0.54 |
| 32016 | 80 | 125 | 29 | 29 | 22 | 1.5 | 1.5 | 134 | 216 | 2600 | 3700 | 1.28 |
| 33016 | 80 | 130 | 37 | 37 | 29 | 2 | 1.5 | 168 | 153 | 2600 | 3600 | 1.9 |
| 30216 | 80 | 140 | 28.25 | 26 | 22 | 2.5 | 2 | 160 | 213 | 2400 | 3400 | 1.7 |
| 32216 | 80 | 140 | 35.25 | 33 | 28 | 2.5 | 2 | 197 | 280 | 2400 | 3400 | 2.15 |
| 30616 | 80 | 140 | 45 | 45 | 36.5 | 2.5 | 2 | 246 | 366 | 2400 | 3400 | 2.8 |
| 33216 | 80 | 140 | 46 | 46 | 35 | 2.5 | 2 | 251 | 375 | 2200 | 3200 | 2.92 |
| 30316 | 80 | 170 | 42.5 | 39 | 33 | 3 | 2.5 | 278 | 356 | 2000 | 3000 | 4.26 |
| 31316 | 80 | 170 | 42.5 | 39 | 27 | 3 | 2.5 | 224 | 265 | 2000 | 2700 | 4.1 |
| 32316 | 80 | 170 | 61.5 | 58 | 48 | 3 | 2.5 | 387 | 549 | 1900 | 3200 | 6.4 |
| 32917 | 85 | 120 | 23 | 23 | 18 | 1.5 | 1.5 | 94 | 80 | 2800 | 3800 | 0.77 |
| 32017 | 85 | 130 | 29 | 29 | 22 | 1.5 | 1.5 | 140 | 224 | 2400 | 3500 | 1.35 |
| 33017 | 85 | 130 | 36 | 36 | 29.5 | 1.5 | 1.5 | 172 | 166 | 2600 | 3500 | 1.7 |
| 33117 | 85 | 140 | 41 | 41 | 32 | 2.5 | 2 | 220 | 340 | 2400 | 3400 | 2.45 |
| 30217 | 85 | 150 | 30.5 | 28 | 24 | 2.5 | 2 | 180 | 242 | 2200 | 3200 | 2.1 |
| 32217 | 85 | 150 | 38.5 | 36 | 30 | 2.5 | 2 | 226 | 325 | 2200 | 3200 | 2.7 |
| 33217 | 85 | 150 | 49 | 49 | 37 | 2.5 | 2 | 286 | 430 | 2000 | 3000 | 3.68 |
| 30317 | 85 | 180 | 44.5 | 41 | 34 | 4 | 3 | 304 | 392 | 1900 | 2800 | 4.98 |
| 31317 | 85 | 180 | 44.5 | 41 | 28 | 4 | 3 | 242 | 285 | 1900 | 2500 | 4.6 |
| 32317 | 85 | 180 | 63.5 | 60 | 49 | 4 | 3 | 420 | 599 | 1800 | 2600 | 7.28 |
| 32918 | 90 | 125 | 23 | 23 | 18 | 1.5 | 1.5 | 97.5 | 83 | 2700 | 3600 | 0.82 |
| 32018 | 90 | 140 | 32 | 32 | 24 | 2 | 1.5 | 168 | 270 | 2200 | 3300 | 1.75 |
| 33118 | 90 | 150 | 45 | 45 | 35 | 2.5 | 2 | 251 | 390 | 2000 | 3000 | 3.09 |
| 30218 | 90 | 160 | 32.5 | 30 | 26 | 2.5 | 2 | 199 | 270 | 2000 | 3000 | 2.52 |
| 32218 | 90 | 160 | 42.5 | 40 | 34 | 2.5 | 2 | 269 | 396 | 2000 | 3200 | 3.45 |
| 30318 | 90 | 190 | 46.5 | 43 | 36 | 4 | 3 | 340 | 341 | 1800 | 2700 | 5.8 |
| 32318 | 90 | 190 | 67.5 | 64 | 53 | 4 | 3 | 476 | 477 | 1700 | 2400 | 8.76 |
| 32919 | 95 | 130 | 23 | 23 | 18 | 1.5 | 1.5 | 101 | 86 | 2500 | 3400 | 0.88 |
| 32019 | 95 | 145 | 32 | 32 | 24 | 2 | 1.5 | 168 | 168 | 2300 | 3100 | 1.8 |
| 33019 | 95 | 145 | 39 | 39 | 32.5 | 2 | 1.5 | 220 | 220 | 2200 | 3100 | 2.3 |
| 30219 | 95 | 170 | 34.5 | 32 | 27 | 3 | 2.5 | 226 | 226 | 1900 | 2800 | 3.07 |
| 32219 | 95 | 170 | 45.5 | 43 | 37 | 3 | 2.5 | 301 | 302 | 1900 | 2800 | 4.22 |
| 31319 | 95 | 200 | 49.5 | 45 | 32 | 4 | 3 | 290 | 350 | 1700 | 2400 | 6.94 |
| 30319 | 95 | 200 | 49.5 | 45 | 38 | 4 | 3 | 368 | 483 | 1900 | 2600 | 6.8 |
| 32319 | 95 | 200 | 71.5 | 67 | 55 | 4 | 3 | 510 | 745 | 1700 | 2500 | 10.5 |
| 32920 | 100 | 140 | 25 | 25 | 20 | 1.5 | 1.5 | 121 | 103 | 2400 | 3200 | 1.14 |
| 32020 | 100 | 150 | 32 | 32 | 24 | 2 | 1.5 | 172 | 280 | 2000 | 3000 | 1.91 |
| 33020 | 100 | 150 | 39 | 39 | 32.5 | 2 | 1.5 | 212 | 208 | 2200 | 3000 | 2.37 |
| 30220 | 100 | 180 | 37 | 34 | 29 | 3 | 2.5 | 253 | 350 | 1900 | 2800 | 3.75 |
| 32220 | 100 | 180 | 49 | 46 | 39 | 3 | 2.5 | 340 | 510 | 1800 | 2600 | 5.12 |
| 30320 | 100 | 215 | 51.5 | 47 | 39 | 4 | 3 | 402 | 490 | 1700 | 2400 | 8.25 |
| 31320 | 100 | 215 | 56.5 | 51 | 35 | 4 | 3 | 374 | 465 | 1600 | 2200 | 8.6 |
| 32320 | 100 | 215 | 77.5 | 73 | 60 | 4 | 3 | 572 | 780 | 1600 | 2200 | 12.9 |
| 32921 | 105 | 145 | 25 | 25 | 20 | 1.5 | 1.5 | 126 | 107 | 2300 | 3000 | 1.2 |
| 32021 | 105 | 160 | 35 | 35 | 26 | 2.5 | 2 | 201 | 335 | 1900 | 2800 | 2.4 |
| 33021 | 105 | 160 | 43 | 43 | 34 | 2.5 | 2 | 233 | 232 | 2100 | 2800 | 3 |
| 30221 | 105 | 190 | 39 | 36 | 30 | 3 | 2.5 | 284 | 400 | 1900 | 2500 | 4.39 |
| 32221 | 105 | 190 | 53 | 50 | 43 | 3 | 2.5 | 380 | 580 | 1800 | 2500 | 6.3 |
| 30321 | 105 | 225 | 53.5 | 49 | 41 | 4 | 3 | 432 | 568 | 1600 | 2300 | 9.85 |
| 31321 | 105 | 225 | 58 | 53 | 36 | 4 | 3 | 402 | 500 | 1500 | 2000 | 9.65 |
| 32321 | 105 | 225 | 81.5 | 77 | 63 | 4 | 3 | 646 | 955 | 1500 | 2000 | 14.5 |
| 32922 | 110 | 150 | 25 | 25 | 20 | 1.5 | 1.5 | 127 | 108 | 2200 | 2900 | 1.24 |
| 32022 | 110 | 170 | 38 | 38 | 29 | 2.5 | 2 | 233 | 390 | 1800 | 2700 | 3.07 |
| 33022 | 110 | 170 | 47 | 47 | 37 | 2.5 | 2 | 302 | 534 | 1800 | 2700 | 3.82 |
| 30222 | 110 | 200 | 41 | 38 | 32 | 3.5 | 2 | 314 | 445 | 1700 | 2400 | 5.2 |
| 32222 | 110 | 200 | 56 | 53 | 46 | 3.5 | 2 | 430 | 668 | 1700 | 2400 | 7.43 |
| 30322 | 110 | 240 | 54.5 | 50 | 42 | 4 | 3 | 471 | 619 | 1600 | 2200 | 11.45 |
| 31322 | 110 | 240 | 63 | 57 | 38 | 4 | 3 | 457 | 585 | 1400 | 1900 | 12 |
| 32322 | 110 | 240 | 84.5 | 80 | 65 | 4 | 3 | 722 | 1070 | 1400 | 1900 | 17.8 |
| 32924 | 120 | 165 | 29 | 29 | 23 | 1.5 | 1.5 | 162 | 138 | 2000 | 2600 | 1.77 |
| 32024 | 120 | 180 | 38 | 38 | 29 | 2.5 | 2 | 242 | 415 | 1800 | 2500 | 3.25 |
| 30224 | 120 | 215 | 43.5 | 40 | 34 | 3 | 2.5 | 335 | 487 | 1600 | 2200 | 6.2 |
| 32224 | 120 | 215 | 61.5 | 58 | 50 | 3 | 2.5 | 475 | 764 | 1600 | 2200 | 9.25 |
| 30324 | 120 | 260 | 59.5 | 55 | 46 | 4 | 3 | 562 | 754 | 1500 | 2000 | 13.8 |
| 31324 | 120 | 260 | 68 | 62 | 42 | 4 | 3 | 539 | 695 | 1200 | 1700 | 15.5 |
| 32324 | 120 | 260 | 90.5 | 86 | 69 | 4 | 3 | 824 | 1240 | 1300 | 1800 | 21.7 |
| 32926 | 130 | 180 | 32 | 32 | 25 | 2 | 1.5 | 194 | 165 | 1800 | 2400 | 2.36 |
| 32026 | 130 | 200 | 45 | 45 | 34 | 2.5 | 2 | 314 | 540 | 1600 | 2200 | 4.9 |
| 30226 | 130 | 230 | 43.75 | 40 | 34 | 4 | 3 | 364 | 525 | 1500 | 2000 | 6.95 |
| 32226 | 130 | 230 | 67.75 | 64 | 54 | 4 | 3 | 549 | 895 | 1500 | 2000 | 11.5 |
| 30326 | 130 | 280 | 63.75 | 58 | 49 | 5 | 4 | 639 | 864 | 1400 | 1800 | 17.2 |
| 31326 | 130 | 280 | 72 | 66 | 44 | 5 | 4 | 605 | 780 | 1100 | 1600 | 18.5 |
| 32928 | 140 | 190 | 32 | 32 | 25 | 2 | 1.5 | 200 | 170 | 1700 | 2200 | 2.51 |
| 32028 | 140 | 210 | 45 | 45 | 34 | 2.5 | 2 | 330 | 585 | 1600 | 2200 | 5.2 |
| 30228 | 140 | 250 | 45.75 | 42 | 36 | 4 | 3 | 407 | 589 | 1400 | 1900 | 8.75 |
| 32228 | 140 | 250 | 71.75 | 68 | 58 | 4 | 3 | 640 | 1060 | 1400 | 1900 | 14.4 |
| 30328 | 140 | 300 | 67.75 | 62 | 53 | 5 | 4 | 721 | 985 | 1200 | 1700 | 21.7 |
| 31328 | 140 | 300 | 77 | 70 | 47 | 5 | 4 | 693 | 900 | 1000 | 1500 | 24.5 |
| 32030 | 150 | 225 | 48 | 48 | 36 | 3 | 2.5 | 370 | 655 | 1500 | 2000 | 6.38 |
| 30230 | 150 | 270 | 49 | 45 | 38 | 4 | 3 | 450 | 650 | 1300 | 1800 | 10.8 |
| 32230 | 150 | 270 | 77 | 73 | 60 | 4 | 3 | 718 | 1190 | 1200 | 1700 | 18.2 |
| 30330 | 150 | 320 | 72 | 65 | 55 | 5 | 4 | 825 | 1060 | 1100 | 1600 | 28.5 |
| 31330 | 150 | 320 | 82 | 75 | 50 | 5 | 4 | 781 | 1020 | 950 | 1400 | 29.5 |
| 32032 | 160 | 240 | 51 | 51 | 38 | 3 | 2.5 | 429 | 780 | 1300 | 1800 | 7.53 |
| 30232 | 160 | 290 | 52 | 48 | 40 | 4 | 3 | 509 | 740 | 1100 | 1600 | 12.85 |
| 32232 | 160 | 290 | 84 | 80 | 67 | 4 | 3 | 850 | 1440 | 1000 | 1400 | 21.1 |
| 30332 | 160 | 340 | 75 | 68 | 58 | 5 | 4 | 880 | 1400 | 1000 | 1400 | 29 |
| 32034 | 170 | 260 | 57 | 57 | 43 | 3 | 2.5 | 510 | 910 | 1100 | 1600 | 10.6 |
| 30234 | 170 | 310 | 57 | 52 | 43 | 5 | 4 | 615 | 865 | 1000 | 1500 | 19 |
| 32234 | 170 | 310 | 91 | 86 | 71 | 5 | 4 | 1000 | 1630 | 1000 | 1500 | 28.5 |
| 30334 | 170 | 360 | 80 | 72 | 62 | 5 | 4 | 1020 | 1340 | 950 | 1400 | 35 |
| 32334 | 170 | 360 | 128 | 120 | 100 | 3.5 | 1.5 | 1300 | 1760 | 850 | 1100 | 59.5 |
| 32036 | 180 | 280 | 64 | 64 | 48 | 3 | 2.5 | 640 | 1160 | 1100 | 1600 | 14.5 |
| 30236 | 180 | 320 | 57 | 52 | 43 | 5 | 4 | 580 | 810 | 1000 | 1500 | 20 |
| 32236 | 180 | 320 | 91 | 86 | 71 | 5 | 4 | 998 | 1720 | 950 | 1400 | 29.8 |
| 32038 | 190 | 290 | 64 | 64 | 48 | 3 | 2.5 | 660 | 1200 | 1000 | 1500 | 15 |
| 30238 | 190 | 340 | 60 | 55 | 46 | 3 | 2.5 | 720 | 1000 | 950 | 1400 | 24 |
| 32238 | 190 | 340 | 97 | 92 | 75 | 5 | 4 | 1100 | 1900 | 900 | 1300 | 36 |
Tapered Roller Bearing(Inch size) size chart
| Bearing No. | Boundary dimensions | Mass | |||||||
| mm | |||||||||
| Cone | Cup | d | D | T | B | C | R | r | kg |
| 368 | 362 | 50.8 | 90 | 20 | 22.225 | 15.875 | 1.5 | 2 | 0.526 |
| 368A | 362A | 50.8 | 88.9 | 20.638 | 22.225 | 16.513 | 3.5 | 1.3 | 0.516 |
| 385 | 382 | 50 | 98.425 | 21 | 21.946 | 17.826 | 2.3 | 0.8 | 0.749 |
| 387A | 382A | 57.15 | 96.838 | 21 | 21.946 | 15.875 | 3.5 | 0.8 | 0.581 |
| 387AS | 382S | 57.15 | 96.838 | 21 | 21.946 | 15.875 | 5 | 0.8 | 0.576 |
| 390 | 394 | 57.15 | 110 | 22 | 21.996 | 22 | 2.3 | 0.8 | 0.948 |
| 390A | 394A | 63.5 | 110 | 22 | 21.996 | 18.824 | 1.5 | 1.3 | 0.88 |
| 418 | 414 | 38.1 | 88.5 | 26.988 | 29.083 | 22.225 | 3.5 | 1.5 | 0.841 |
| 462 | 453X | 57.15 | 104.775 | 30.162 | 29.317 | 24.605 | 2.3 | 3.3 | 1.04 |
| 480 | 472 | 68.263 | 120 | 29.794 | 29.007 | 24.237 | 3.5 | 2 | 1.3 |
| 484 | 472 | 70 | 120 | 29.794 | 29.007 | 24.237 | 2 | 2 | 1.3 |
| 535 | 532A | 44.45 | 111.125 | 38.1 | 36.957 | 30.162 | 3.5 | 3.3 | 1.89 |
| 567 | 563 | 73.025 | 127 | 36.512 | 36.17 | 28.575 | 3.5 | 3.3 | 1.81 |
| 580 | 572 | 82.55 | 139.992 | 36.512 | 36.098 | 28.575 | 3.5 | 3.3 | 2.22 |
| 665 | 653 | 85.725 | 146.05 | 41.275 | 41.275 | 31.75 | 3.5 | 3.3 | 4.79 |
| 749 | 742 | 85.026 | 150.089 | 44.45 | 46.678 | 36.512 | 3.5 | 3.3 | 3.17 |
| 799 | 792 | 128.588 | 206.375 | 47.625 | 47.625 | 34.925 | 3.3 | 3.3 | 4.92 |
| 1380 | 1328 | 22.225 | 52.388 | 23.178 | 20.168 | 14.288 | 1.5 | 1.5 | 0.198 |
| 1755 | 1729 | 22.225 | 56.896 | 19.386 | 19.837 | 15.875 | 1.3 | 0.8 | 0.254 |
| 1988 | 1922 | 28.575 | 57.15 | 19.845 | 19.355 | 15.875 | 3.5 | 1.5 | 0.227 |
| 2580 | 2520 | 31.75 | 66.421 | 25.4 | 25.357 | 20.638 | 0.8 | 3.3 | 0.41 |
| 2582 | 2523 | 31.75 | 69.85 | 23.812 | 25.357 | 19.05 | 3.5 | 1.3 | 0.449 |
| 2776 | 2720 | 38.1 | 76.2 | 23.812 | 25.654 | 19.05 | 4.3 | 3.3 | 0.488 |
| 2780 | 2729 | 36.487 | 76.2 | 23.812 | 25.654 | 19.05 | 1.5 | 0.8 | 0.52 |
| 2785 | 2733 | 33.338 | 75.26 | 23.812 | 25.654 | 19.05 | 3.5 | 3.3 | 0.528 |
| 3379 | 3320 | 34.925 | 80.167 | 29.37 | 30.391 | 23.812 | 3.5 | 3.3 | 0.72 |
| 3780 | 3720 | 50.8 | 93.264 | 30.162 | 30.302 | 23.812 | 3.5 | 3.3 | 0.868 |
| 3872 | 3820 | 34.925 | 85.725 | 30.162 | 30.162 | 23.812 | 3.5 | 3.3 | 0.88 |
| 3982 | 3920 | 63.5 | 112.712 | 30.162 | 30.048 | 23.812 | 3.5 | 3.3 | 1.21 |
| 3984 | 3920 | 66.675 | 112.712 | 30.162 | 30.048 | 23.812 | 3.5 | 3.3 | 1.1 |
| A6075 | A6157 | 19.05 | 39.992 | 12.014 | 11.153 | 9.525 | 1 | 1.3 | 0.066 |
| 9278 | 9220 | 68.262 | 161.925 | 49.212 | 46.038 | 31.75 | 3.5 | 3.3 | 4.54 |
| 3062 | 3162 | 15.875 | 41.275 | 14.288 | 14.681 | 11.112 | 1.3 | 2 | 0.096 |
| 7097 | 7196 | 25 | 50.005 | 13.945 | 14.26 | 9.525 | 1.5 | 1 | 0.12 |
| 07110S | 7204 | 25.4 | 51.994 | 15.011 | 14.26 | 12.7 | 1.5 | 1.3 | 0.145 |
| 9067 | 9194 | 19.05 | 49.225 | 23.02 | 19.05 | 17.462 | 1.3 | 3.5 | 0.197 |
| 9074 | 9195 | 19.05 | 49.225 | 19.845 | 21.539 | 14.288 | 1.5 | 1.3 | 0.189 |
| 9081 | 9196 | 20.625 | 49.225 | 23.02 | 21.539 | 17.462 | 1.5 | 1.5 | 0.2 |
| 4388 | 4335 | 41.275 | 90.488 | 39.688 | 40.386 | 33.338 | 3.5 | 3.3 | 1.22 |
| 7100 | 7196 | 25.4 | 50.005 | 13.495 | 14.26 | 9.525 | 1 | 1 | 0.119 |
| 11590 | 11520 | 15.875 | 42.862 | 14.288 | 14.288 | 9.525 | 1.5 | 1.5 | 0.1 |
| LM11749 | LM11710 | 17.462 | 39.878 | 13.843 | 14.605 | 10.668 | 1.3 | 1.3 | 0.083 |
| LM11949 | LM11910 | 19.05 | 45.237 | 15.494 | 16.637 | 12.065 | 1.3 | 1.3 | 0.124 |
| M12649 | M12610 | 21.43 | 50.005 | 17.526 | 18.288 | 13.97 | 1.3 | 1.3 | 0.169 |
| LM12748 | LM12710 | 21.43 | 45.237 | 15.494 | 16.637 | 12.065 | 1.3 | 1.3 | 0.121 |
| LM12749 | LM12710 | 21.986 | 45.237 | 15.494 | 16.637 | 12.065 | 1.3 | 1.3 | 0.116 |
| LM12749A | LM12711 | 22 | 46 | 15.494 | 16.637 | 12.065 | 1.3 | 1.3 | 0.121 |
| 13686 | 13620 | 38.1 | 69.012 | 19.05 | 26.195 | 15.083 | 1.5 | 0.8 | 0.876 |
| 14125A | 14276 | 31.75 | 69.012 | 19.845 | 19.583 | 15.875 | 3.5 | 1.3 | 0.36 |
| 15100 | 15243 | 25.4 | 61.912 | 19.05 | 20.638 | 14.288 | 3.5 | 2 | 0.27 |
| 15101 | 15244 | 25.4 | 62 | 20.638 | 20.638 | 15.875 | 0.8 | 1.3 | 0.292 |
| 15103S | 15245 | 26.162 | 62 | 19.05 | 19.939 | 14.288 | 0.8 | 1.3 | 0.279 |
| 15123 | 15245 | 31.75 | 62 | 18.161 | 19.05 | 14.288 | Spec | 1.3 | 0.26 |
| 17887 | 17831 | 45.23 | 79.985 | 19.842 | 20.638 | 15.08 | 2 | 1.3 | 0.41 |
| 21075 | 21212 | 19.05 | 53.975 | 22.225 | 21.839 | 15.875 | 1.5 | 2.3 | 0.258 |
| 18590 | 18520 | 41.275 | 73.025 | 16.667 | 17.462 | 12.7 | 3.5 | 1.5 | 0.275 |
| 24780 | 24720 | 41.275 | 76.2 | 22.225 | 23.02 | 17.462 | 3.5 | 0.8 | 0.428 |
| 25570 | 25519 | 36.512 | 82.55 | 23.812 | 25.4 | 19.05 | 3.5 | 2 | 0.64 |
| 25572 | 25520 | 38.1 | 82.931 | 23.812 | 25.4 | 19.05 | 0.8 | 0.8 | 0.641 |
| 25577 | 25521 | 42.875 | 83.058 | 23.812 | 25.4 | 19.05 | 3.5 | 0.8 | 0.544 |
| 25582 | 25523 | 44.45 | 82.931 | 26.988 | 25.4 | 22.225 | 5 | 2.3 | 0.603 |
| 25877 | 25820 | 34.925 | 73.025 | 23.812 | 24.608 | 19.05 | 1.5 | 2.3 | 0.471 |
| 25880 | 25821 | 36.487 | 73.025 | 23.812 | 24.608 | 19.05 | 3.5 | 0.8 | 0.464 |
| 26877 | 26820 | 36.512 | 81.167 | 25.4 | 25.4 | 20.638 | 0.8 | 3.3 | 0.43 |
| 26882 | 26823 | 41.275 | 76.2 | 25.4 | 25.4 | 20.638 | 3.5 | 1.5 | 0.485 |
| 27690 | 27620 | 83.345 | 125.412 | 25.4 | 25.4 | 19.845 | 3.5 | 1.5 | 1.085 |
| 28985 | 28920 | 60.325 | 101.6 | 25.4 | 25.4 | 19.845 | 3.5 | 3.3 | 0.801 |
| LM29748 | LM29710 | 38.1 | 65.088 | 18.034 | 18.288 | 13.97 | Spec | 1.3 | 0.243 |
| LM29749 | LM29711 | 38.1 | 65.088 | 19.812 | 18.288 | 15.748 | 2.3 | 1.3 | 0.254 |
| 29580 | 29520 | 60 | 107.95 | 25.4 | 25.4 | 19.05 | 3.5 | 3.3 | 1.003 |
| 29590 | 29521 | 66.675 | 110 | 25.4 | 25.4 | 19.05 | 3.5 | 1.3 | 0.923 |
| 29586 | 29522 | 63.5 | 107.95 | 25.4 | 25.4 | 19.05 | 1.5 | 0.8 | 0.945 |
| 29685 | 29620 | 73.025 | 112.712 | 25.4 | 25.4 | 19.05 | 3.5 | 3.3 | 0.861 |
| 33275 | 33462 | 69.85 | 117.474 | 30.162 | 30.162 | 23.812 | 3.5 | 3.3 | 1.25 |
| 39581 | 39520 | 57.15 | 112.712 | 30.162 | 30.162 | 23.812 | 8 | 3.3 | 1.38 |
| L44643 | L44610 | 25.4 | 50.292 | 14.224 | 14.732 | 10.668 | 1.3 | 1.3 | 0.124 |
| L44649 | L44610 | 26.988 | 50.292 | 14.224 | 14.732 | 10.668 | 3.5 | 1.3 | 0.115 |
| L45449 | L45410 | 29 | 50.292 | 14.224 | 14.732 | 10.668 | 3.5 | 0.3 | 0.11 |
| LM48548 | LM48510 | 34.925 | 65.088 | 18.034 | 18.288 | 13.97 | Spec | 1.3 | 0.264 |
| LM48548A | LM48511A | 34.925 | 65.088 | 21.082 | 18.288 | 17.018 | 0.8 | 1.5 | 0.29 |
| LM67047 | LM67010 | 31.75 | 59.131 | 15.875 | 16.764 | 11.811 | 2.3 | 1.3 | 0.18 |
| LM67048 | LM67011 | 31.75 | 59.131 | 17.78 | 16.764 | 13.716 | Spec | 1.3 | 0.22 |
| L68149 | L68110 | 34.988 | 59.131 | 15.875 | 16.764 | 11.938 | Spec | 1.3 | 0.167 |
| L68149 | L68111 | 34.988 | 59.974 | 15.875 | 16.764 | 11.938 | Spec | 1.3 | 0.174 |
| JL69349 | JL69310 | 38 | 63 | 17 | 17 | 13.5 | Spec | 1.3 | 0.194 |
| LM78349 | LM78310A | 35 | 62 | 16.7 | 17 | 13.6 | Spec | 1.5 | 0.222 |
| M84249 | M84210 | 25.4 | 59.53 | 23.368 | 23.114 | 18.288 | 0.8 | 1.5 | 0.33 |
| M84548 | M84510 | 25.4 | 57.15 | 19.431 | 19.431 | 14.732 | 1.5 | 1.5 | 0.23 |
| M86649 | M86610 | 30.162 | 64.292 | 24.433 | 21.433 | 16.67 | 1.5 | 1.5 | 0.34 |
| M88048 | M88010 | 33.338 | 68.262 | 22.225 | 22.225 | 17.462 | 0.8 | 1.5 | 0.379 |
| HM88542 | HM88510 | 31.75 | 73.025 | 29.37 | 27.783 | 23.02 | 1.3 | 3.3 | 0.621 |
| HM88649 | HM88610 | 34.925 | 72.233 | 25.4 | 25.4 | 19.842 | 2.3 | 2.3 | 0.48 |
| LM102949 | LM102910 | 45.242 | 73.431 | 19.588 | 19.812 | 15.748 | 3.5 | 0.8 | 0.321 |
| LM104949 | LM104911 | 50.8 | 82.55 | 21.59 | 22.225 | 16.51 | 3.5 | 1.3 | 0.429 |
| JLM104948 | JLM10491C | 50 | 82 | 21.5 | 21.5 | 17 | 3 | 0.5 | 0.432 |
| M201047 | M201011 | 39.688 | 73.025 | 25.654 | 22.098 | 21.336 | 2.4 | 2.4 | 0.439 |
| JH211749 | JH211710 | 65 | 120 | 39 | 38.5 | 32 | 3 | 2.5 | 1.874 |
| HM212047 | HM212010 | 63.5 | 122.238 | 38.1 | 38.354 | 29.718 | 7 | 2 | 1.85 |
| HM212049 | HM212011 | 66.675 | 122.238 | 38.1 | 38.354 | 29.718 | 3.5 | 3.3 | 1.85 |
| HM218248 | HM218210 | 89.975 | 146.975 | 40 | 40 | 32.5 | 7 | 3.5 | 2.52 |
| LM300849 | LM300811 | 40.988 | 67.975 | 17.5 | 18 | 13.5 | Spec | 1.5 | 0.234 |
| LM501349 | LM501310 | 41.275 | 73.431 | 19.558 | 19.812 | 14.732 | 3.5 | 0.8 | 0.327 |
| LM501349 | LM501314 | 41.275 | 73.431 | 21.43 | 19.812 | 16.604 | 3.5 | 0.8 | 0.35 |
| JLM506849 | JLM506810 | 55 | 90 | 23 | 23 | 18.5 | 1.5 | 0.5 | 0.576 |
| HM518445 | HM518410 | 88.9 | 152.4 | 39.688 | 39.688 | 30.163 | 3.5 | 3.3 | 2.84 |
| LM603049 | LM603011 | 45.242 | 77.788 | 19.842 | 19.842 | 15.08 | 3.5 | 0.8 | 0.358 |
| LM603049 | LM603012 | 45.242 | 77.788 | 21.43 | 19.842 | 16.667 | 3.5 | 0.8 | 0.373 |
| LM603049 | LM603014 | 45.242 | 80 | 19.842 | 19.842 | 15.08 | 3.5 | 0.8 | 0.391 |
| M802048 | M802011 | 41.275 | 82.55 | 26.543 | 25.654 | 20.193 | 3.5 | 3.3 | 0.615 |
| HM803146 | HM803110 | 41.275 | 88.9 | 30.162 | 29.37 | 23.02 | 3.5 | 3.3 | 0.886 |
| 368 | 362 | 50.8 | 90 | 20 | 22.225 | 15.875 | 1.5 | 2 | 0.526 |
9. Conclusion
Tapered roller bearings represent a critical technology in the field of mechanical engineering and industrial applications. Their unique ability to handle both radial and axial loads, combined with a design that ensures even load distribution, makes them indispensable in many high-performance systems. From automotive wheel hubs and gearboxes to heavy machinery and renewable energy systems, the versatility and robust construction of tapered roller bearings allow them to meet the demands of diverse operational environments.
The comprehensive exploration of tapered roller bearings has highlighted their key components, including the inner and outer rings, tapered rollers, and cage, which together contribute to superior performance and durability. In addition, the advantages of these bearings, such as improved load-carrying capacity and enhanced operational efficiency, are balanced by the challenges of precise installation and maintenance. Comparing tapered roller bearings to cylindrical roller bearings reveals important differences in design, load handling, and application suitability, which are crucial for engineers when selecting the optimal bearing type for their needs.
Moreover, the availability of detailed size charts enables professionals to make informed decisions regarding the dimensions and load ratings required for specific applications. For BYWB Bearing, offering high-quality tapered roller bearings is a testament to their commitment to innovation and reliability in the bearing industry. Ultimately, a thorough understanding of these bearings not only supports better design and performance but also drives advancements in machinery across a wide range of industries.
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