Tapered roller bearing is a radial thrust type rolling bearing in which the rolling elements are tapered rollers. It include small cone angle and large cone angle two types. The small cone angle mainly bears the radial and axial combined loads that mainly based on radial loads. It is often used by couple and reverse installation. The inner and outer ring can be installed separately. The radial and axial clearance can be adjusted during installation and use. The large cone angle is mainly subjected to axial and radial combined loads that mainly based on axial loads. Generally, it is not used alone to withstand pure axial loads. When paired configuration (relatively installed at the same name), it can be used to withstand pure radial loads.
Tapered roller bearing include Single row type , Double rows type and Four rows type. more rows type usually is TDI TDO TNA TNAW TNASWE structure.