To accurately manufacture a tapered bearing by minimizing the difference between outside diameters on the thick side and the thin side of the formed tapered bearing.

A pair of annular blanks 1 having a fixed outside diameter the approximately half parts 11 of which are made into a thick cross section and the other approximately half parts 12 of which are made into a thin cross section are prepared. By facing the end faces 11a on the thick side to each other and performing cold rolling after these annular blanks 1 are situated between a mandrel 2 and a forming roll 3, a pair of the tapered bearings are obtained.