... Roller Bearings (TDO Double-Row Tapered Roller Bearings (TDO Type)This type of bearing is composed of a double cup, two ... cup has an oil slot and some oil holes.This type of bearing can carry both radial and axial loads, ... widely applied to aviation, spaceflight, navigation, machine tool, wind turbine generator, metallurgy, petroleum, chemical, medical treatment, rail transport, automobile, textile, ...