Tapered roller bearings consist of four interdependent components: the cone (inner ring),the cup (outer ring), the tapered rollers (rolling elements) and the cage (roller retainer). Tapered roller bearings are uniquely designed to manage both thrust and radial loads between a rotating and non-rotating    member. The steeper the cup angle, the greater the ability of the bearing to handle thrust loads.

It could enhance preformance in demanding applications, such as gear reduction units, cranes, calender rolls, wind energy, pulp and paper, mining, heavy truck, machine tools.

Tapered roller bearings are available in single-row, double-row（TDI;TDO) and four-row configurations.