China Hot selling 10% off Track Roller U V W Groove Conveyor Pulleys Wheel Cam Follwer Sliding Rolling Spherical Guide Line Ball Bearing bearing air

Product Description


Track rollers-SG series   (mm)  
g dw d D C B L d2 H Cw(KN) Cow(KN) Frperm(KN)
SG15 8 6 5 17 8 5.75 20.46 8.6 1 1.27 0.82 1.3
SG15-10 9 10 5 17 8 5.75 25.5 8.6 1 1.27 0.82 1.3
SG20 25 8 6 24 11 7.25 28.62 11.1 1.2 3.4 1.7 1.3
SG25 49 10 8 30 14 8.5 35.77 13 1.5 3.67 2.28 1.3
SG35 136 12 12 42 19 12.5 48.93 18 1.5 8.5 5.1 5.1
SG15N 8 6 5 17 8 5.75 20.46 8.6 0.5 1.27 0.82 1.3
SG20N 25 8 6 24 11 7.25 28.62 11.1 0.7 3.4 1.7 1.3
SG25N 49 10 8 30 14 8.5 35.77 13 1 3.67 2.28 1.3
SG35N 136 12 12 42 19 12.5 48.93 18 1 8.5 5.1 5.1
LFR50/5-4N 8 4 5 16 7 5 18 6.9 0 2.02 0.93 1.3
LFR50/5-5 8 5 5 17 7 5 20 6.9 0 2.02 0.93 1.3
LFR50/5N 8 6 5 17 7 5 21 6.9 0 2.02 0.93 1.3
LFR50/8N 25 6 8 24 11 7 28 12.3 0 3.67 2.28 1.3
LFR50/8-8N 25 6 8 24 11 7 29 12.3 0 3.67 2.28 1.3


GNYAR   KG dw d D B C A a rs Cw(KN) Cow(KN)
LV20/7ZZ 17 10 7 22 11 11 14.5 120 0.3 3.78 2.05
LV20/8ZZ 49 10 8 30 14 14 18.1 120 0.3 5.13 2.67
LV202-38ZZ 87 10 15 38 17 17 22.25 120 0.5 8.47 5.37
LV202-40ZZ 110 10 15 40 18 18 22 120 0.5 8.47 5.37
LV201ZZ 130 20 12 41 20 20 28 120 0.3 8.47 5.37
LV201-14.2RS 107 14 12 39.9 18 18 24 1 19.05 0.75


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2nd step: the outside diameter of the bearing

  • A / Put your bearing on the grid as shown in the diagram.
  • B / Mark the outline of the outer ring. For more convenience, use a pencil with a fine point.
  • C / For ease of reading, do not hesitate to draw lines to the axes and then take the measurement.





3rd step: the thickness of the bearing

  • A / In the same way as for the outer diameter and the bore, place your bearing on the edge on the grid as shown in the diagram.
  • B / Draw the outer contour.
  • C / For ease of reading, do not hesitate to draw lines to the axes and then take the measurement.


Conclusion :

You now have 3 measuring elements that will allow you to identify your bearing: the inside diameter (or bore), the outside diameter, and the thickness.

You can postpone these measurements in our bearing search tool on our website


 1.How many is the MOQ of your company?
   Our company MOQ is 1pcs.

2.Could you accept OEM and customize?
   YES, OEM is accepted and we can customize for you according to sample or drawing. 


3.How do you guaranee the quality?
Evaluate the samples and drawings before production
Eva;iate the production process,and following it in schedual,guarantee the delievery time in time.
Evaluate the bearing dimension,clearance,noise,rotations of final productions.
Evaluate the fause products,block it and make an improve action.


4.Do you have stocks?
   YES, we have most of the bearings showing on made in china in stock,please contact us for order details.


5.Do you have only Hubs Wheel Auto Bearing?

    YES,we have more others types bearings,ANY BEARING YOU CAN THINK OF NOW,WE HAVE!


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Contact Angle: Normal
Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Single
Load Direction: Radial Bearing
Material: Bearing Steel


Customized Request

roller bearing

What is the role of cage design and materials in roller bearing performance and durability?

The design and materials used in the cage of a roller bearing have a significant impact on its performance and durability. The cage, also known as the retainer or separator, holds and spaces the rolling elements within the bearing, ensuring their proper alignment and distribution. Here’s a detailed explanation of the role of cage design and materials in roller bearing performance and durability:

  • Rolling Element Guidance:

The primary role of the cage is to guide the rolling elements, such as balls or rollers, within the bearing. The design of the cage determines the spacing and orientation of the rolling elements, maintaining their proper alignment and preventing contact or interference. By guiding the rolling elements, the cage minimizes friction and wear, allowing for smooth and efficient operation of the bearing. It also prevents the rolling elements from skewing or tilting, which could lead to uneven load distribution and premature failure.

  • Load Distribution:

The cage plays a critical role in distributing the loads applied to the bearing evenly among the rolling elements. It helps prevent excessive stress on individual elements, reducing the risk of fatigue, brinelling, or premature wear. An optimally designed cage ensures that the loads are properly distributed, maximizing the bearing’s load-carrying capacity and enhancing its durability under various operating conditions.

  • Lubricant Retention:

The cage also assists in retaining the lubricant within the bearing. It helps create spaces or pockets for lubricant storage, allowing for proper lubrication of the rolling elements and raceways. Effective lubrication reduces friction, heat generation, and wear, promoting smoother operation and extending the bearing’s service life. The cage design should account for sufficient lubricant retention while minimizing excessive drag or churning losses.

  • Friction and Heat Generation:

The materials used in the cage can impact the frictional characteristics and heat generation of the bearing. The design and material selection should aim to minimize friction between the cage and the rolling elements, as well as between the cage and the bearing rings. This reduces energy losses and heat buildup, enhancing the overall efficiency of the bearing. Materials with low friction coefficients and good thermal conductivity, such as engineered plastics or certain types of metals, are commonly used for cage construction.

  • Strength and Durability:

Cage materials should possess sufficient strength and durability to withstand the operating conditions and loads imposed on the bearing. The cage must resist deformation or fatigue under normal operating loads, ensuring the stability and integrity of the rolling element arrangement. The choice of cage material depends on factors such as the application’s speed, temperature, and load requirements. Common cage materials include steel, brass, polyamide (nylon), and various engineered plastics.

  • Noise and Vibration:

The cage design and materials can also influence the noise and vibration characteristics of the bearing. Properly designed and well-matched cages help minimize cage-induced vibrations and rattling, which can contribute to undesirable noise levels. Additionally, certain cage materials with good damping properties can help reduce vibrations and noise generated by the rolling elements’ impacts or resonance phenomena, further improving the bearing’s performance and user experience.

In summary, the cage design and materials significantly impact the performance and durability of roller bearings. They play a vital role in guiding the rolling elements, distributing loads, retaining lubrication, minimizing friction and heat generation, ensuring strength and durability, and influencing noise and vibration levels. By carefully considering the cage design and selecting appropriate materials, manufacturers can optimize the bearing’s performance, improve its reliability, and extend its service life in various applications and operating conditions.

roller bearing

How do roller bearings perform in high-speed or high-load applications?

Roller bearings are designed to perform effectively in both high-speed and high-load applications, offering reliable operation and exceptional performance under demanding conditions. The specific design features and characteristics of roller bearings enable them to handle these challenging operating conditions. Here’s a detailed explanation of how roller bearings perform in high-speed or high-load applications:

  • High-Speed Applications:

In high-speed applications, roller bearings are capable of accommodating rapid rotation while maintaining their performance and integrity. Several factors contribute to the ability of roller bearings to handle high speeds:

  • Cage Design: Roller bearings often incorporate a cage or separator that keeps the rolling elements evenly spaced and separated. This design minimizes friction and prevents contact between the rolling elements, even at high speeds.
  • Material Selection: Roller bearings are manufactured using high-quality materials, such as steel or ceramic, that provide excellent strength, hardness, and durability. These materials allow the bearings to withstand the centrifugal forces and dynamic loads associated with high speeds.
  • Lubrication: Proper lubrication is essential for high-speed applications. Lubricants with low viscosity and high thermal stability are used to minimize friction and dissipate heat effectively. The lubricant also helps to reduce the risk of bearing failure due to overheating caused by friction at high speeds.
  • Critical Speed Considerations: Roller bearings are designed to operate below their critical speed, which is the rotational speed at which the bearing experiences excessive vibration and potential failure. By selecting the appropriate bearing size and design, the critical speed can be avoided or minimized, ensuring stable and reliable operation at high speeds.
  • High-Load Applications:

Roller bearings excel in high-load applications, where they are subjected to significant radial or axial loads. The following factors contribute to the performance of roller bearings under high-load conditions:

  • Load-Carrying Capacity: Roller bearings have a higher load-carrying capacity compared to other types of bearings. The design features, such as larger contact areas and multiple rolling elements, distribute the load over a larger surface area, reducing stress concentrations and enhancing load-carrying capability.
  • Rigidity: Roller bearings exhibit high rigidity, which enables them to maintain their shape and resist deformation under heavy loads. This rigidity ensures that the bearing can support the applied loads without excessive deflection or loss of performance.
  • Rolling Element Design: The shape and arrangement of the rolling elements in roller bearings contribute to their ability to handle high loads. The larger contact area and optimized geometry of the rolling elements distribute the load more effectively, reducing stress and preventing premature bearing failure.
  • Lubrication and Surface Treatments: Proper lubrication and the use of specialized surface treatments, such as coatings or heat treatments, enhance the durability and load-carrying capacity of roller bearings. These treatments reduce friction, minimize wear, and improve the resistance to fatigue and surface damage caused by high loads.

Overall, roller bearings demonstrate excellent performance in high-speed or high-load applications. Their ability to handle rapid rotation and accommodate heavy loads is attributed to their cage design, material selection, lubrication, critical speed considerations, load-carrying capacity, rigidity, rolling element design, and surface treatments. By selecting the appropriate type and design of roller bearings and ensuring proper maintenance and lubrication, these bearings can reliably and efficiently operate in a wide range of high-speed or high-load applications across various industries.

roller bearing

What are the key advantages of using roller bearings in machinery and equipment?

Roller bearings offer several key advantages when used in machinery and equipment. These advantages contribute to improved performance, reliability, and efficiency in various applications. Here’s a detailed explanation of the key advantages of using roller bearings:

  • High Load Capacity:

One of the primary advantages of roller bearings is their high load-carrying capacity. The cylindrical or tapered rolling elements (rollers) in roller bearings distribute the load over a larger surface area compared to ball bearings. This allows roller bearings to handle heavier radial, axial, and combined loads. In machinery and equipment that operate under significant load conditions, such as construction machinery, conveyors, or heavy-duty gearboxes, roller bearings provide superior performance and reliability.

  • Enhanced Durability:

Roller bearings are known for their durability and ability to withstand harsh operating conditions. The line contact between the rolling elements and raceways in roller bearings allows for better load distribution, reducing localized stresses. This results in improved durability and resistance to wear, fatigue, and deformation. Roller bearings are commonly used in applications where reliability and long service life are crucial, such as industrial machinery, mining equipment, and automotive components.

  • Ability to Handle Misalignment:

Roller bearings, particularly spherical roller bearings, have the ability to accommodate misalignment between the shaft and the housing. This flexibility is advantageous in applications where alignment may be challenging or subject to changes due to thermal expansion, shaft deflection, or mounting errors. Roller bearings can handle limited misalignment without significant impact on performance or premature wear. This feature simplifies installation and maintenance, reducing the risk of damage or failure in machinery and equipment.

  • Wide Range of Sizes and Configurations:

Roller bearings are available in a wide range of sizes, configurations, and designs, providing flexibility for various machinery and equipment applications. Cylindrical roller bearings, tapered roller bearings, spherical roller bearings, and needle roller bearings are among the commonly used types of roller bearings. This variety allows engineers and designers to select the most appropriate bearing based on load requirements, speed, space limitations, and other factors. The availability of different configurations ensures optimal performance and compatibility in diverse machinery and equipment setups.

  • Suitability for High-Speed Applications:

Roller bearings can be designed and manufactured to operate efficiently at high speeds. Advances in bearing technology, including optimized designs, improved materials, and lubrication systems, have enabled roller bearings to handle high rotational speeds while maintaining performance and reliability. This makes roller bearings suitable for applications that require high-speed operation, such as machine tools, power transmission systems, and automotive engines. Proper selection and application of roller bearings ensure smooth and reliable performance at elevated speeds.

  • Reduced Friction and Energy Consumption:

Roller bearings typically exhibit lower friction compared to other types of bearings, such as plain bearings or sliding contact bearings. The rolling motion of the cylindrical or tapered rollers reduces frictional resistance, resulting in reduced energy consumption and heat generation. The lower friction contributes to improved efficiency and lower operating temperatures in machinery and equipment. This advantage is particularly important in applications where energy efficiency and heat management are critical, such as electric motors, pumps, and industrial gearboxes.

In conclusion, roller bearings offer several key advantages when used in machinery and equipment. Their high load capacity, enhanced durability, ability to handle misalignment, wide range of sizes and configurations, suitability for high-speed applications, and reduced friction and energy consumption make them a preferred choice in various industries. By incorporating roller bearings, machinery and equipment can achieve improved performance, reliability, and efficiency, leading to enhanced productivity and reduced downtime.

China Hot selling 10% off Track Roller U V W Groove Conveyor Pulleys Wheel Cam Follwer Sliding Rolling Spherical Guide Line Ball Bearing   bearing airChina Hot selling 10% off Track Roller U V W Groove Conveyor Pulleys Wheel Cam Follwer Sliding Rolling Spherical Guide Line Ball Bearing   bearing air
editor by CX 2024-03-26

Roller Bearing

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