Outer ring of tapered roller bearing and tapered roller bearing

摘要

An outer ring (2) has a tapered tubular portion (31) having a tapered raceway surface (38), a small diameter side extension portion (32) that extends radially outward from a small diameter side edge of the tapered tubular portion, and a large diameter side extension portion (33) that extends from a large diameter side edge of the tapered tubular portion in a direction away from the axis of the outer ring. The small diameter side extension portion and the large diameter side extension portion are larger in thickness than the tapered tubular portion.