Description:. Single-row tapered roller bearings are the most basic and widely used, consisting of a cone assembly and a cup. Timken patented the first in 1898 and today offers the world's widest variety in inch and metric sizes. Application: Gear boxes, pumps and conveyors used in power gen, mining, oil and gas, wind energy, pulp and paper, food and beverage, gear drives, cement and metals applications. Drive trains, gear drives, axle centers, wheel ends and transmissions used in construction, mining, rail, automotive and commercial vehicles.