Patent ID: 7338213

Claim:
A barrel-shaped bearing comprising: an external bearing ring, and an internal bearing ring inward of the external ring; at least one row of barrel-shaped rolling bodies arranged between the external and internal rings, each rolling body of the at least one row of barrel-shaped rolling bodies having opposite ends and an encircling groove in and extending around the rolling body between the ends thereof; at least one disk-shaped cage between the rings positioned and configured to revolve together with the rolling bodies, the cage engaging the encircling grooves of the rolling bodies of one row, the cage having an outer circumference, including a plurality of recesses therein corresponding to the number of rolling bodies in the row, the inner ring having a running surface toward the rolling bodies, and the entire running surface of the internal ring having a concave cross section extending axially over the entire axial length of the rolling bodies; each recess of the plurality of recesses in the cage being of such depth and so shaped as to have two opposed sides such that the smallest distance between the two opposed sides of a recess of the disk-type cage is smaller in the region of the outer circumference of the cage than a diameter of a rolling body in the region of the groove encircling the rolling body, wherein the two opposed sides of each recess of the disk-type cage in the region of the outer circumference of the cage converge in the radial direction.