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Classification of tapered roller bearings

wallpapers Tech 2021-04-14
What is a tapered roller bearing?
Tapered roller bearings refer to radial thrust rolling bearings with tapered rollers as rolling elements. There are two types: small cone angle and large cone angle. The small cone angle mainly bears the combined radial and axial load based on the radial load. It is often used in double use, reverse installation, the inner and outer races can be installed separately, and the radial and axial clearance can be adjusted during installation and use; The large taper angle mainly bears the combined axial and radial load mainly with the axial load. Generally, it is not used alone to bear the pure axial load. When configured in pairs, it can be used to bear the pure radial load.
 
Classification of tapered roller bearings
1. The single-row tapered roller bearing has an outer ring, its inner ring and a set of tapered rollers are an inner ring assembly enclosed by a basket-shaped cage. 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.
 
2. The outer ring (or inner ring) of the 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.
3. 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 a greater radial load than double-row tapered roller bearings and has a slightly lower limit speed. It is mainly used for heavy machinery.
4. 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 the fully sealed bearing, 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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