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How many kinds of cylindrical roller bearings are on the market?

Views: 0     Author: Site Editor     Publish Time: 2022-08-05      Origin: Site

Cylindrical roller bearings can be divided into different structures such as single-row, double-row and multi-row cylindrical roller bearings according to the number of rows of rolling elements. Different structural bearings are also reflected in the position design of the ribs.


What are the meanings of the parameters of the cylindrical roller bearing?

What are the characteristics and types of single row cylindrical roller bearings?

What are the characteristics of double row cylindrical roller bearings?


What are the meanings of the parameters of the cylindrical roller bearing?

Single row cylindrical roller bearings can withstand heavy radial loads and high speeds. These bearings are manufactured in several different designs, the main difference being the construction of the ribs. The most commonly used are NU, NJ, NUP and N designs.

N type - the outer ring has no rib, and the inner ring has no rib, which can allow the displacement of the shaft relative to the bearing seat in both axial directions. Therefore, these bearings are used as non-fixed end bearings

NU type-Double ribs on the outer ring, no ribs on the inner ring, the rest are the same as above.

NJ type - double rib on the outer ring, single rib on the inner ring. Therefore, these bearings are suitable for the axial positioning of the shaft in one direction.

NF type - single rib on the outer ring, double rib on the inner ring, the others are the same as above.

NUP type - double rib on the outer ring, single rib on the inner ring and separable flat rib. These bearings can be used as locating end bearings, which provide axial positioning of the shaft in both directions.

NFP type - single rib on the outer ring and separable flat rib, single rib on the inner ring, the rest are the same as above.


What are the characteristics and types of single row cylindrical roller bearings?

In single row cylindrical roller bearings, the rollers are usually guided by the ribs of one of the rings of a set of bearings, which in combination with specially designed and surface-treated roller ends provide improved lubrication, reduced friction and thus reduce the operating temperature of the bearing.

Single row cylindrical roller bearings can withstand heavy radial loads and high speeds. These bearings are manufactured in several different designs, the main difference being the construction of the ribs. The most commonly used are NU, NJ, NUP and N designs.



What are the characteristics of double row cylindrical roller bearings?

Double row cylindrical roller bearings have a compact structure, high load capacity and high rigidity. Therefore, these bearings are mainly used in machine tools, rolling mills, drums, grinding machines and large gearboxes.

Double row cylindrical roller bearings of NNU design and NN design are separable bearings, that is, the roller and cage assemblies can be installed separately from other bearing rings, or all bearing components can be installed separately. This type of bearing facilitates installation, inspection and maintenance.

Double row cylindrical roller bearings have cylindrical holes and tapered holes; when installing bearings with tapered holes, the internal clearance can be adjusted slightly, and the structure of the positioning device is simplified.


After reading, do you have a deeper understanding of cylindrical roller bearing? For further information, please contact SHANDONG CHIK BEARING CO., LTD.

CHIK BEARING produces a wide range of ball and roller bearings for automotive making,​Ferrous Metallurgy, hemical Machinery and Machine Manufacturing .

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