To provide a rolling bearing capable of preventing the occurrence of hydrogen embrittlement flaking even if it is used under such an environment that water is mixed in lubricant, and having a long service life.

In the self-aligning rolling bearing 1 provided with an inner ring 2 having two rows of raceway track faces 2a, 2a, an outer ring 3 having a two-row integrated spherical face raceway track 3a, and two rows of spherical rollers 4 arranged between the inner ring 2 and the outer ring 3 so as to roll freely, a contact angle θ is 8 to 11°, and at least one of the inner ring 2, outer ring 3, and barrel shaped roller 4 is made of a steel having a C concentration of 0.80 to 1.10 wt.%, Cu concentration of 0.05 to 0.60 wt.%, Nb concentration of 0.02 to 0.20 wt.%, and V concentration of 0.02 to 0.20 wt.%.