Needle thrust cylindrical roller bearings are double-acting precision thrust cylindrical roller bearings with a radial bearing component. Inner ring, outer ring, and cylindrical roller sets are coordinated so that the bearings can be axially preloaded with a precision locknut. The bearings are available with or without mounting holes in the outer ring. Bearings with holes are directly bolted to the mating structure. The large contact surface and close hole spacing allow for an extremely rigid and low-settlement connection to the mating structure. This eliminates the need for a bearing cover required to hold the bearing, including any necessary fitting work. Needle thrust cylindrical roller bearings are also available on one side with a stepped, extended shaft collar. These bearings are used when the axial support of the shaft collar is insufficient or a sealing running surface is required.