Product Description


Product Description


Cylindrical Roller Bearings are designed to handle radial load at high performance and speed. According to the presence or absence of ribs, it can be divided into NU, NJ, NUP, N, NF, NH and other single-row cylindrical roller bearings, and NNU, NN and other double-row cylindrical roller bearings.

The bearing has a separable inner ring and outer ring structure.Pressed steel or machined brass cages are generally used, but sometimes molded polyamide cages are also used.


Technical specification

Some cylindrical roller bearings have no CZPT on either the inner or outer ring, so the rings can move axially relative to each other. These can be used as free-end bearings. Cylindrical roller bearings, in which either the inner or outer rings has 2 CZPT and the other ring has one, are capable of taking some axial load in 1 direction Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools.

Types NU, N, NNU, and NN are suitable as free-end bearings. 
Types NJ and NF can sustain limited axial loads in 1 direction.
Types NH and NUP can be used as fixed-end bearings.
NH-type cylindrical roller bearings consist of the NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars.
The inner ring loose rib of an NUP-type cylindrical roller bearing should be mounted so that the marked side is on the outside.



Bearing No. Boundary Dimensions (mm) Basic Load Rating (KN) Mass
d D B C Co kg
N208EM NU208EM NJ208EM 40 80 18 51.5 53.0 0.39
N209EM NU209EM NJ209EM 45 85 19 58.5 63.8 0.52
N210EM NU210EM NJ210EM 50 90 20 61.2 69.2 0.56
N211EM NU211EM NJ211EM 55 100 21 80.2 95.5 0.62
N212EM NU212EM NJ212EM 60 110 22 89.8 102.0 0.84
N213EM NU213EM NJ213EM 65 120 23 102.0 118.0 1.05
N214EM NU214EM NJ214EM 70 125 24 112.0 135.0 1.29
N215EM NU215EM NJ215EM 75 130 25 125.0 155.0 1.45
N216EM NU216EM NJ216EM 80 140 26 132.0 165.0 1.74
N217EM NU217EM NJ217EM 85 150 28 158.0 192.0 2.08
N218EM NU218EM NJ218EM 90 160 30 170.0 203.0 2.50
N219EM NU219EM NJ219EM 95 170 32 192.0 214.0 2.80
N220EM NU220EM NJ220EM 100 180 34 208.0 226.0 3.14
N222EM NU222EM NJ222EM 110 200 38 239.0 342.0 2.11
N224EM NU224EM NJ224EM 120 215 40 247.0 249.0 6.32
N226EM NU226EM NJ226EM 130 230 40 358.0 372.0 7.38
N228EM NU228EM NJ228EM 140 250 42 302.0 415.0 9.01
N230EM NU230EM NJ230EM 150 270 45 450.0 595.0 12.50
N232EM NU232EM NJ232EM 160 290 48 500.0 665.0 15.50
N234EM NU234EM NJ234EM 170 310 52 605.0 800.0 19.20
N236EM NU236EM NJ236EM 180 320 50 625.0 850.0 20.00
N238EM NU238EM NJ238EM 190 340 55 695.0 955.0 24.00
N240EM NU240EM NJ240EM 200 360 58 765.0 1060.0 28.60
N244EM NU244EM NJ244EM 220 400 65 760.0 1080.0 37.30
N248EM NU248EM NJ248EM 240 440 72 935.0 1340.0 50.40


Packaging & Shipping


  /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

The Number of Rows: Single
Material: Bearing Steel
Spherical: Non-Aligning Bearings
Load Direction: Radial Bearing
Separated: Separated
ISO: 9001
US$ 0.1/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

tapered roller bearing

Advancements in Tapered Roller Bearing Technology

Tapered roller bearing technology has undergone significant advancements over the years, driven by the demands of modern industrial applications and the pursuit of enhanced performance, efficiency, and durability. These advancements have led to innovations in design, materials, manufacturing processes, and lubrication. Here are some key insights into the advancements in tapered roller bearing technology:

  • Advanced Bearing Materials:

Manufacturers are exploring new materials and alloy compositions to improve bearing strength, fatigue resistance, and high-temperature performance. Specialized coatings and surface treatments are applied to enhance corrosion resistance and reduce friction.

  • Optimized Design and Geometry:

Modern design techniques, such as computer-aided modeling and simulation, allow for the optimization of bearing geometry and internal structures. This results in improved load distribution, reduced stress concentrations, and enhanced overall performance.

  • Improved Cage Designs:

Cage designs have evolved to ensure better roller guidance, reduced friction, and minimized wear. Innovative cage materials and shapes enhance lubricant flow and promote efficient operation, especially at high speeds.

  • Enhanced Lubrication Systems:

Advancements in lubrication technology have led to the development of specialized lubricants and lubrication systems. These solutions offer better protection against wear, reduce friction, and ensure consistent lubrication even in challenging operating conditions.

  • Precision Manufacturing Techniques:

Modern manufacturing methods, such as precision grinding and superfinishing, allow for tighter tolerances and improved surface finishes. This contributes to smoother rolling contact, reduced vibration, and lower noise levels.

  • Integrated Sensors and Monitoring:

Advances in sensor technology enable the integration of condition monitoring systems within tapered roller bearings. These sensors provide real-time data on factors like temperature, vibration, and lubrication, allowing for predictive maintenance and performance optimization.

  • Customization and Application-Specific Solutions:

Manufacturers offer more customization options to cater to diverse industrial applications. This includes bearings optimized for specific operating conditions, load requirements, and environmental challenges.

  • Digitalization and Industry 4.0:

The integration of tapered roller bearing data into digital platforms aligns with the principles of Industry 4.0. Remote monitoring, predictive analytics, and digital twins are used to enhance maintenance strategies and maximize bearing lifespan.

  • Energy Efficiency Focus:

Advancements in tapered roller bearing technology align with global efforts to improve energy efficiency. Reduced friction, optimized designs, and efficient lubrication contribute to overall equipment energy savings.

  • Sustainability and Eco-Friendly Solutions:

Manufacturers are exploring sustainable materials and manufacturing processes to reduce the environmental impact of bearing production. Eco-friendly lubricants and packaging solutions are also gaining attention.

Overall, advancements in tapered roller bearing technology continue to drive innovation across industries, providing solutions that meet the evolving needs of modern machinery and contribute to improved performance, reliability, and sustainability.

cylindrical roller bearing

Can you provide examples of industries or equipment that frequently use cylindrical roller bearings?

Cylindrical roller bearings are widely used in various industries and equipment where rotational motion is involved. Their design and characteristics make them suitable for numerous applications that require high radial load capacity, moderate axial load capacity, and the ability to accommodate misalignment. Let’s explore some examples of industries and equipment that frequently utilize cylindrical roller bearings:

  • Automotive Industry:

The automotive industry extensively uses cylindrical roller bearings in various components such as wheel hubs, transmissions, engines, steering systems, and differentials. These bearings provide support for rotating shafts and help withstand radial loads encountered during vehicle operation. They contribute to the smooth and efficient functioning of critical automotive systems.

  • Mining and Construction:

In the mining and construction sectors, cylindrical roller bearings are crucial for heavy-duty applications. They are commonly found in equipment such as conveyor systems, crushers, pulverizers, excavators, and loaders. These bearings are designed to handle high radial loads and provide reliable performance in demanding environments characterized by dust, dirt, and heavy vibrations.

  • Power Generation:

Cylindrical roller bearings are extensively used in power generation equipment, including turbines, generators, and electric motors. They play a vital role in supporting rotating shafts and providing smooth operation under high-speed and high-temperature conditions. These bearings are designed to handle significant radial loads, ensuring reliable and efficient power generation.

  • Steel and Metal Processing:

The steel and metal processing industry relies on cylindrical roller bearings in various applications, including rolling mills, continuous casting machines, and metal cutting equipment. These bearings are capable of withstanding heavy loads, high temperatures, and harsh operating conditions encountered in metal processing operations.

  • Pulp and Paper:

In the pulp and paper industry, cylindrical roller bearings are found in paper machines, rollers, and rotary kilns. They provide support for rotating drums, rolls, and shafts, ensuring smooth and reliable operation during the paper production process. These bearings are designed to withstand the high loads and continuous operation associated with paper manufacturing.

  • Machine Tools:

Cylindrical roller bearings are widely used in machine tools such as lathes, milling machines, grinders, and machining centers. They provide precise support for rotating spindles and shafts, enabling accurate and efficient metal cutting operations. These bearings contribute to the precision and reliability required in the machining industry.

  • Textile Machinery:

The textile industry utilizes cylindrical roller bearings in various textile machinery, including spinning frames, looms, and winding machines. These bearings support rotating components and help maintain the tension and smooth movement of yarns and fibers during the textile production process. They are designed to withstand high speeds and provide reliable performance in textile manufacturing operations.

These are just a few examples of industries and equipment that frequently rely on cylindrical roller bearings. Their versatility, load-carrying capacity, and ability to operate in diverse environments make them suitable for a wide range of applications across numerous sectors.

cylindrical roller bearing

What are cylindrical roller bearings, and how are they used in machinery?

Cylindrical roller bearings are a type of rolling element bearing that consists of cylindrical rollers held in place by a cage. They are designed to provide high radial load-carrying capacity and moderate thrust load-carrying capacity. Cylindrical roller bearings have a relatively high stiffness and can accommodate axial displacement between the inner and outer rings.

These bearings are commonly used in various machinery applications due to their specific characteristics and advantages:

  • Radial Load Capacity:

Cylindrical roller bearings can withstand high radial loads, making them suitable for applications where the primary load is radial in nature. The cylindrical rollers distribute the load evenly along their length, reducing stress concentrations and improving load-carrying capacity. This characteristic allows cylindrical roller bearings to support heavy machinery components and handle substantial radial forces.

  • Thrust Load Capacity:

While primarily designed for radial loads, cylindrical roller bearings can also accommodate moderate axial loads. The arrangement of the cylindrical rollers and their contact angle with the raceways enables these bearings to handle limited thrust loads. However, for applications with predominantly axial loads, other types of bearings, such as thrust bearings, may be more suitable.

  • Design Variations:

Cylindrical roller bearings come in various design variations to meet specific application requirements. These variations include different cage designs, such as solid cages or cages made of polymer materials, which offer benefits such as reduced friction and improved lubrication. Additionally, cylindrical roller bearings can have different configurations of the inner and outer ring flanges, such as separable or integral designs, to facilitate installation and maintenance.

  • High-Speed Capability:

Cylindrical roller bearings can operate at high speeds, depending on their design and internal clearance. Factors such as cage material, roller design, and lubrication play a role in determining the maximum allowable speed. Manufacturers provide speed ratings and guidelines to ensure proper selection and operation of cylindrical roller bearings within their speed limits.

  • Application Versatility:

Cylindrical roller bearings find wide applications in various machinery and equipment. They are commonly used in rotating machinery, such as electric motors, gearboxes, pumps, and compressors. Cylindrical roller bearings are also utilized in industries such as automotive, aerospace, construction, and mining, where they support heavy loads and provide rotational motion in critical components.

  • Alignment and Compensation:

Cylindrical roller bearings have the ability to accommodate slight misalignments between the inner and outer rings. This feature allows for easier installation and helps compensate for mounting errors or shaft deflections during operation. The axial displacement capability of cylindrical roller bearings can also assist in thermal expansion or contraction of the shaft and housing.

In summary, cylindrical roller bearings are a type of rolling element bearing that provides high radial load-carrying capacity and moderate thrust load-carrying capacity. They are used in machinery applications where heavy radial loads need to be supported. With their versatility, high-speed capability, and ability to accommodate misalignment, cylindrical roller bearings contribute to the efficient and reliable operation of various types of machinery.

China wholesaler Chinese Wholesale SL182934 SL182936 SL182938 Ncf2934CV Ncf2936CV Ncf2938CV Full Complement Cylindrical Roller Bearing for Medical Equipment   deep groove ball bearingChina wholesaler Chinese Wholesale SL182934 SL182936 SL182938 Ncf2934CV Ncf2936CV Ncf2938CV Full Complement Cylindrical Roller Bearing for Medical Equipment   deep groove ball bearing
editor by CX 2024-02-21