Detailed Description:
Single direction taper roller thrust bearings are used for the kingpin bearing arrangement of commercial vehicles. They have a full complement of rollers and are held together by a sheet steel cover. Most of these bearings are fitted with rubbing seals of wear and oil-resistant nitrile rubber. Certain bearings have a shaft washer with tapered raceway and retaining flange. These bearings can accept minor eccentricities of the shaft with respect to the housing bore without much influence on bearing performance. Bearings are fitted with a roller-centered cage. 
 Double direction taper roller thrust bearings are used with multi-row cylindrical roller bearings in rolling mill applications. Those bearings with a plane shaft washer are able to accommodate slight eccentricities of the shaft with respect to the housing bore. A spacer sleeve is arranged between the two housing washers. 
The double direction taper roller thrust bearings with tapered raceways on the shaft and housing washers have a higher axial load carrying capacity than the ones with a plane shaft washer. They are usually mounted with a loose fit on the roll neck. The shaft washer of most bearings has one or two locating slots.