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Why do we choose roller bearings?

wallpapers Tech 2020-05-20
Roller bearings are bearings with rollers as rotation part, the rollers are made of hard steel with enough rigidity to prevent deformation.
 
In roller bearings, the roller is a cylinder to bear much more load than ball bearings. Because the contact between the inner and outer race is not a point but a line. This spreads the load out over a larger area, allowing the bearing to handle much greater loads than a ball bearing. However, this type of bearing is not designed to handle much thrust loading.
 
There are several types of cylindrical roller bearings. They vary according to the number of rows of rollers (one, two or four) and whether or not there is a cage. A cage allows the bearing to support significant radial loads and a high speed. The absence of a cage allows the bearing to have more rows of rollers and therefore to support even heavier radial loads. The only disadvantage is that cylindrical roller bearings without cages do not tolerate as high speeds as the ones with cages.
 
Cylindrical roller bearings are also very robust and have a long bearing life. Additionally, some bearings can also support an axial load, provided that they do not have a shoulder on the inner and outer rings. If this is the case, you will not be able to use your bearing to support an axial load.
 
The rollers are made of high rigidity steel with smooth surface to reduce the bearing frictions while working.
 
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