TAPERED ROLLER BEARING

摘要

A front bearing (tapered roller bearing) includes an inner ring, an outer ring, a plurality of tapered rollers, a cage, and a lubricating oil holding member. The lubricating oil holding member includes: a cylindrical portion having an axial length from a large diameter-side outer ring end surface to an end portion of the cage and capable of resisting a pressing force for press-fitting the outer ring; a fitting hook that is connected to one end of the cylindrical portion, that projects in the axial direction from an abutment surface which is in surface contact with the large diameter-side outer ring end surface, and that is fitted in an engagement groove portion provided in an outer peripheral surface of the outer ring; and a projection that projects radially inward from an inner peripheral surface of the cylindrical portion.

主权项

1. A tapered roller bearing comprising:
an inner ring that has an outer peripheral surface formed as an inner ring raceway surface in a shape of a conical surface; an outer ring that is disposed concentrically on an outer circumferential side of the inner ring and has an inner peripheral surface formed as an outer ring raceway surface in a shape of a conical surface; a plurality of tapered rollers rollably disposed in an annular space between the inner ring raceway surface and the outer ring raceway surface; a cage that has a plurality of pockets in which the tapered rollers are held; and a lubricating oil holding member that is disposed adjacent to an outer ring end surface of the outer ring on a large diameter side of the outer ring raceway surface and holds a lubricating oil held in the tapered roller bearing, wherein the lubricating oil holding member includes:
a cylindrical portion having an axial length from the outer ring end surface of the outer ring on the large diameter side to an end of the cage and capable of resisting a pressing force for press-fitting the outer ring;a fitting hook that is connected to one end of the cylindrical portion, that projects in an axial direction from an abutment surface which is in surface contact with the outer ring end surface of the outer ring on the large diameter side, and that is fitted in an engagement groove portion provided in an outer peripheral surface of the outer ring; anda projection that projects radially inward from an inner peripheral surface of the cylindrical portion.