Outer ring of tapered roller bearing, tapered roller bearing, and manufacturing method of outer ring of tapered roller bearing

摘要

An outer ring (2) made by press forming an integral plate includes: a tapered cylinder portion (31) having a tapered raceway surface (38); a radially extending portion (32) that extends in a radial direction from an end portion on the small diameter side of the tapered cylinder portion (31); a cylindrical portion (33) that is connected at one end to an outer end portion in the radial direction and extends in the axial direction; a center backup portion (34) that extends from the other end of the cylindrical portion (33) to a center portion on the large diameter side in the axial direction and backs up the center portion; and a curved portion (35) that curves toward the outside in the radial direction from the end portion on the large diameter side of the tapered cylinder portion (31), in which the outside diameter of the outer end surface is the same as the outside diameter of the cylindrical portion (33) are formed.