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Classification of tapered roller bearings

wallpapers Industry 2020-05-19
A single row tapered roller bearing has an outer ring, an inner ring, and a group of tapered rollers, which is an inner ring assembly formed by a basket-shaped cage. The outer ring can be separated from the inner ring assembly. According to the ISO tapered roller bearing dimensions standard, any standard type of tapered roller bearing outer ring or inner ring assembly should be able to achieve internationality with the same kind of outer ring or emotional ring assembly exchange. That is, in addition to the external dimensions and tolerances of the outer ring of the same model, the requirements of ISO492 (GB307) must be met, and the cone angle and cone diameter of the inner ring components must also comply with the relevant regulations for interchange.
Generally, the tapered angle of the outer ring raceway of a single row tapered roller bearing is between 10 ° and 19 °, which can simultaneously bear the combined action of axial load and radial load. The higher the cone angle, the greater the ability to withstand axial loads. Bearings with a large cone angle, the rear code is added with B, and the cone angle is between 25 ° ~ 29 °, which can bear a large axial load. Besides, single row tapered roller bearings can adjust the size of the clearance during installation.
The outer ring (or inner ring) of double row tapered roller bearings is a whole. The two inner circles (or outer rings) have small end faces close to each other, and there is a spacer in the middle. The thickness of the spacer adjusts the clearance. The width of the spacer can also be used to improve the pre-interference of double-row tapered roller bearings.
Four-row tapered roller bearings. This type of bearing's performance is the same as that of double-row tapered roller bearings, but it has a more significant radial load than double-row tapered roller bearings and slightly lower limit speed. It is mainly used for heavy machinery.
Multi-sealed double and four-row tapered roller bearings, ZWZ provides long-life, multi-sealed double and four-row tapered roller bearings. The personalized new design of the bearing changes the traditional design method of the fully sealed bearing. It adopts a new type of sealing structure that combines sealing and dustproof to improve the sealing effect and improve the sealing performance. Compared with open structure bearings, multi-sealed double and four-row tapered roller bearings have a 20% to 40% longer life; lubricant consumption is reduced by 80%.
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