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Cylindrical Roller Bearing

The cylindrical roller and raceway are line contact bearings. They have large load capacity and mainly bear radial loads. The friction between the rolling element and the rib of the ferrule is small, which is suitable for high-speed rotation. According to whether the ferrule has ribs or not, they can be divided into single-row cylindrical roller bearings such as NU, NJ, NUP, N, NF, and double-row cylindrical roller bearings such as NNU and NN. The inner and outer rings of this bearing are separable.

Product details

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Model number Basic size Basic load rating Rated speed
Dynamic state Static Reference speed Limiting speed
d [mm] D [mm] B [mm] C [kN] C₀ [kN] [r/min] [r/min]
NJ2212EM
 60 110 28 101 123
NJ2211EM
 55 100 25 75 87
NJ2210EM
 50 90 23 64 74
NJ2209EM
 45 85 23 61 68
NJ2208EM
 40 80 23 58 62
NJ2207EM
 35 72 23 49 51
NJ2206EM
 30 62 20 24 33
NJ2205EM
 25 52 18 24 23
NJ2204EM
 20 47 18 22 20
NJ2203EM
 17 40 16 24 22
NJ226EM
 130 230 40 365 455
NJ224EM
 120 215 40 335 420
Model number Basic size Basic load rating Rated speed
Dynamic state Static Reference speed Limiting speed
d [in] D [in] B [in] C [Ibf] C₀ [Ibf] [r/min] [r/min]
NJ2212EM
NJ2211EM
NJ2210EM
NJ2209EM
NJ2208EM
NJ2207EM
NJ2206EM
NJ2205EM
NJ2204EM
NJ2203EM
NJ226EM
NJ224EM

Advantages


1. High load-bearing capacity: Cylindrical roller bearings adopt roller structure, which can bear high radial and axial loads and are suitable for high-load rotating 

bodies.


2. Low friction coefficient: Since cylindrical roller bearings have a large rolling contact area and a low friction coefficient, they have good lubrication performance 

and low friction resistance, which can effectively reduce mechanical energy consumption and wear.


3. High rotation accuracy: Cylindrical roller bearings adopt precision processing technology and have high rotation accuracy, which can ensure the stability and 

accuracy of mechanical equipment.


4. Good durability: Cylindrical roller bearings adopt high-quality materials and advanced heat treatment technology, with good durability and long service life.


5. Good adaptability: Cylindrical roller bearings can choose different designs, materials and sizes according to different application requirements, and have strong 

adaptability and flexibility.


6. Low maintenance cost: Cylindrical roller bearings have low maintenance costs, and only need regular lubrication and inspection to ensure their normal operation.




Applications


‌1. Large electric motors‌: Cylindrical roller bearings can withstand large radial loads and certain axial loads, and are suitable for occasions that require 

high loads and high-speed operation.


‌2. Machine tool spindles‌: Due to their excellent radial load capacity and high-speed rotation characteristics, cylindrical roller bearings are often used 

in machine tool spindles to ensure the stability and precision of the spindles.


‌3. Automotive industry‌: In the automotive industry, cylindrical roller bearings are used in various transmission parts, such as axle boxes, diesel engine 

crankshafts, etc., and can withstand heavy loads and impact loads.


‌4. Metallurgical equipment‌: In metallurgical equipment, such as cranes and rolling mills, cylindrical roller bearings can withstand huge radial loads and 

axial impact loads, ensuring the stable operation of the equipment.


‌5‌. Other mechanical equipment‌: Widely used in mechanical equipment such as vibrating screens, reducers, generators, gas turbines, etc., to adapt to 

various high-load and high-speed application scenarios