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what types of roller bearings do you know

wallpapers Industry 2020-03-24

Roller bearings are rolling bearings with short cylindrical, tapered, or waisted rollers as rolling elements. There are mainly structural types such as centripetal short cylindrical rollers, double-row centripetal spherical rollers, tapered rollers, and thrust rollers.

Types of common roller bearings
Cylindrical Roller Bearings  
This type of roller is mainly used for cylindrical roller bearings. Roller assemblies can also be used directly in machinery. This type of roller is standardized in size and can be used as a product roller for design and user selection.
Long cylindrical roller bearing
This type of roller is divided into shaft diameter and non-shaft diameter. It is mainly used for long cylindrical roller bearings, and roller components can also be used directly in machinery.
Needle bearing
This type of roller is mainly used for needle roller bearings, universal joint needle roller bearings, and thrust needle roller bearings. Needle roller components can also be used directly in machinery. This type of roller has been serialized in size for design choice. According to the needs of the bearing structure, the shapes of the heads at both ends of the needle are tapered, flat, round, etc.
Tapered Roller Bearings
It has a round truncated cone, and its cone angle is usually 1 ° to 4 ° 20 ′, and there are also those less than 1 ° or greater than 4 ° 20 ′, mostly 2 °. The length of the roller is generally not more than twice the diameter of the large end of the roller. This type of roller is mostly used for tapered roller bearings, and rollers with large tapered angles are basically used for thrust tapered roller bearings.
Spherical roller bearing
The rolling surface of the roller is spherical. Bearings using this roller have self-aligning performance and can withstand large loads. Spherical rollers are divided into asymmetric types and symmetrical shapes. Generally, the asymmetric large end surface is spherical, and the symmetrical end surfaces are flat. Symmetric spherical rollers have better performance, while non-symmetrical ones are eliminated. This type of roller is used for spherical roller bearings and thrust spherical roller bearings.
Helical roller bearings
It is a hollow roller rolled with a special section of steel strip, divided into left-handed and right-handed. This type of roller is not widely used and is mainly used for spiral roller bearings subjected to impact loads.
Pillar hole roller bearings
Pillar hole The roller is provided with a through-hole in the center of the roller. This hole is used to install the pillar to be fixed on the sheet pillar holder. This type of roller has cylindrical, conical and spherical shapes, and is mainly used for extra-large bearings.


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