Patent ID: 9683605
Date: 2017-06-20
CPC Classifications: F16C

Claim:
1. A tapered roller bearing, comprising: an inner ring having a tapered inner ring raceway surface; an outer ring having a tapered outer ring raceway surface; a plurality of tapered rollers configured to roll on the inner ring raceway surface and the outer race raceway surface and each tapered roller having a large end face formed of a convex surface; and an annular cage that retains the plurality of tapered rollers at intervals in a circumferential direction, wherein: the inner ring has a rib face that is provided on a larger diameter side of the inner ring and that contacts the large end face, a surface roughness of the rib face is greater than that of the large end face, the rib face is a concave surface, and the tapered roller bearing satisfies Ri>R≧Rr, where: