Patent ID: 7645074

Claim:
A fluid-lubricated type tapered roller bearing device comprising: an outer ring; an inner ring disposed coaxially with the outer ring, the inner ring and the outer ring defining, at one axial end thereof, a first opening through which a lubricating fluid flows into a space between the outer ring and the inner ring and, at the other axial end, a second opening through which, the lubricating fluid flows out from the space; tapered rollers disposed between the outer ring and the inner ring; a fluid accommodating portion provided in a vicinity of the second opening for accommodating the lubricating fluid; and a cage which retains the tapered rollers, wherein the fluid accommodating portion includes a fluid accommodating plate which comprises a protruding portion which protrudes further inwards in a radial direction of the outer ring than an edge portion of a cupped raceway surface of the outer ring which lies on a large diameter side thereof, a fluid accommodating area in which the lubricating fluid is accommodated being defined at an inner side of the fluid accommodating plate with respect to the protruding portion in an axial direction, wherein the protruding portion of the fluid accommodating plate is disposed at a location which is spaced apart an interval from the cage outwards in the axial direction, and wherein an outward end face in the axial direction of the protruding portion of the fluid accommodating plate is positioned further inwards in the axial direction than an end face of an edge portion of the inner ring which lies on a large diameter side thereof.