| 摘要 |
PROBLEM TO BE SOLVED: To provide a tapered roller bearing capable of improving vibration resistance, impact resistance and lubricity while being easily manufactured.SOLUTION: A tapered roller bearing includes an outer ring 11, an inner ring 13, a tapered roller 15, and a cage 17. The cage 17 has a small diameter-side annular portion 31 at an axial one end side, a large diameter-side annular portion 33 at the axial other side, and a plurality of pillar portions 35 arranged in a circumferential direction and connecting the small diameter-side annular portion 31 and the large diameter-side annular portion 33 along a shaft center of the tapered roller 15. The small diameter-side annular portion 31 has a guide face 51 disposed in opposition to a small flange portion 25 of the inner ring 13 with a prescribed radial clearance, and an opening portion 53 axially communicated to at least a part of a circumferential position on which the pillar portions 35 are disposed.SELECTED DRAWING: Figure 1 |
