| 摘要 |
PROBLEM TO BE SOLVED: To provide a tapered roller bearing in which material of a retainer is not constrained and a standing part has no risk of breakage when it overrides a small diameter end part.SOLUTION: An inner ring 20 has an annular groove 25 between an inner ring side raceway surface 21 and a small diameter side end part 23, and a retainer 30 has a standing part which is elongated in the inner diameter direction toward the annular groove 25 from a first annular part 31. The standing part comprises a first inclination part 35 which is inclined to a tapered roller 40 side toward the annular groove 25 from the first annular part 31 and a second inclination part 36 which is inclined to the small diameter side end part 23 side toward the annular groove 25 from the first inclination part 35, and the second inclination part 36 can be engaged with the annular groove 25 in the axial direction of the inner ring 20. |
