... Bearings (TDO Double-Row Tapered Roller Bearings (TDO Type)This type of bearing is composed of a double cup, two ... cone spacer. The bearing internal clearance has already been set using the cone spacer, so parts must be combined ... widely applied to aviation, spaceflight, navigation, machine tool, wind turbine generator, metallurgy, petroleum, chemical, medical treatment, rail transport, automobile, ...