Tapered roller bearings are mainly used to bear combined radial and axial loads mainly based on radial loads. Compared with angular contact ball bearings, the bearing capacity is large and the limit speed is low. Tapered roller bearings can withstand axial loads in one direction and can limit the axial displacement of the shaft or housing in one direction.

Single row tapered roller bearings have an outer ring, an inner ring assembly of which the inner ring and a set of tapered rollers are enclosed by a basket cage. The outer ring can be separated from the inner ring assembly. According to the ISO tapered roller bearing dimension standard, the outer ring or inner ring assembly of any standard type of tapered roller bearing should be able to achieve international performance with the same type of outer ring or inner ring assembly. exchange.

Generally, the taper angle of the outer ring raceway of a single-row tapered roller bearing is between 10° and 19°, which can bear the combined effect of axial load and radial load at the same time. The larger the cone angle, the greater the ability to bear the axial load. Bearings with large taper angle, post code plus B, taper angle between 25°~29°, it can bear large axial load. In addition, single row tapered roller bearings can adjust the size of the clearance during installation.

The outer ring (or inner ring) of a double row tapered roller bearing is a single piece. 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, the performance of this type of bearing is basically the same as that of double-row tapered roller bearing, but it bears a larger radial load than double-row tapered roller bearing, and the limit speed is slightly lower, mainly used for heavy machinery.