Tapered roller bearing definition

Tapered roller bearing definition
Tapered roller bearing definition refer to radial thrust rolling bearings with tapered rollers as rolling elements. There are two types of bearings, large cone angle and small cone angle. The large taper angle mainly bears the combined axial and radial load, which is mainly the axial load. Generally, it is not used to bear pure axial load alone, but can be used to bear pure radial load when configured in pairs (the ends of the same name are installed relative to each other); The taper angle mainly bears the combined radial and axial load based on the radial load. It is often used in double and reversed installation. The inner and outer races can be installed separately. The radial and axial clearances can be adjusted during installation.

The ability of single-row tapered roller bearing definition to bear axial load depends on the contact angle, that is, the outer ring raceway angle. The greater the angle, the greater the axial load capacity. The most used tapered roller bearing definition is the single row tapered roller bearing. Small-sized double-row tapered roller bearings are used in the front wheel hubs of cars. Four-row tapered roller bearings are used in heavy machines such as large cold and hot rolling mills.

Single row tapered roller bearing definition 
The single row tapered roller bearing definition has an outer ring, its inner ring and a set of tapered rollers are enclosed by a basket-shaped cage to form an inner ring assembly. The outer ring can be separated from the inner ring assembly. According to the ISO tapered roller bearing outer ring or inner ring assembly, any standard type of tapered roller bearing outer ring or inner ring assembly should be able to achieve internationality with the same type of outer ring or inner ring assembly exchange. That is to say, in addition to the external dimensions and tolerances of the outer ring of the same model, which must meet the requirements of ISO492 (GB307), the cone angle and component 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 bear the combined action of axial load and radial load at the same time. The larger the cone angle, the greater the ability to withstand axial load. Bearings with large taper angles are coded with B in the rear, and the taper angle is between 25° and 29°, which can bear larger axial loads. In addition, single-row tapered roller bearings can adjust the size of the clearance during the installation process.

Double row tapered roller bearing definition
The outer ring (or inner ring) of a double-row tapered roller bearing is a whole. The small end faces of the two inner rings (or outer rings) are similar, and there is a spacer in the middle. The clearance is adjusted by the thickness of the spacer. The thickness of the spacer can also be used to adjust the pre-interference of the double-row tapered roller bearing.

Four row tapered roller bearing definition
Four-row tapered roller bearings. The performance of this type of bearing is basically the same as that of double-row tapered roller bearings, but it bears greater radial load than double-row tapered roller bearings and has a 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. Carry out a new and personalized design of the bearing, change the traditional design method of fully sealed bearings, and adopt a new type of sealing structure that combines sealing and dust prevention to improve the sealing effect and improve the sealing performance. Compared with open structure bearings, multi-sealed double and four-row tapered roller bearings can increase their life by 20% to 40%, and reduce lubricant consumption by 80%.

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