Axial tapered roller bearing

An axial tapered roller bearing, comprising:

• an upper pressure disk, a lower pressure disk and a plurality of tapered rollers arranged between the pressure disks, the rollers having peripheries contacting the pressure disks and having radially outer end faces;
• a disk cage operable to hold the rollers at uniform intervals from one another in the circumferential direction;
• the other of pressure disks has a first inner surface formed as a flat mating circulation path for the tapered rollers;
• the one of the pressure disks has a first inner surface formed as a circulation path running radially obliquely outward for the tapered rollers and has a circumferential outer rim with an annular surface facing the tapered rollers, and shaped and sized to be in radial supporting contact with the outer end faces of the tapered rollers;
• the annular surface of the outer rim of the other pressure disk facing the tapered rollers has a concave curvature and the outer end faces of the tapered rollers have a convex curvature which is operable to cause the tapered roller bearing between the tapered rollers and the outer rim, both in the vertical and in the circumferential direction, to have a lubricating wedge with a constant geometry which is suitable for hydrodynamic pressure development by a lubricant.