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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.

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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]
NUP 207 ECM
35 72 17 56 48 11000 12000
NUP 207 ECJ
35 72 17 56 48 11000 12000
NU 307 ECP
35 80 21 75 63 9500 11000
NU 307 ECML
35 80 21 75 63 9500 17000
NU 307 ECM
35 80 21 75 63 9500 11000
NU 307 ECJ
35 80 21 75 63 9500 11000
NU 2307 ECP
35 80 31 106 98 9500 11000
NU 2307 ECJ
30 85 31 106 98 9500 11000
NU 2207 ECP
35 72 23 69.5 63 11000 12000
NU 2207 ECML
35 72 23 69.5 63 11000 18000
NU 2207 ECJ
35 72 23 69.5 63 11000 12000
NU 207 ECP
35 72 17 56 48 11000 12000
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]
NUP 207 ECM
11000 12000
NUP 207 ECJ
11000 12000
NU 307 ECP
9500 11000
NU 307 ECML
9500 17000
NU 307 ECM
9500 11000
NU 307 ECJ
9500 11000
NU 2307 ECP
9500 11000
NU 2307 ECJ
9500 11000
NU 2207 ECP
11000 12000
NU 2207 ECML
11000 18000
NU 2207 ECJ
11000 12000
NU 207 ECP
11000 12000

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