Patent ID: 8876397
Filing Date: 2014-11-04
Classification: F16C

Abstract:
1. A liquid lubricating tapered roller bearing device comprising: an outer ring; an inner ring; tapered rollers disposed between the outer and inner rings; a cage that holds the tapered rollers; wherein the inner ring includes a raceway surface on which the tapered rollers are disposed, and a small-diameter end portion and a large-diameter end portion which are formed at opposite ends of the raceway surface, wherein the small-diameter end portion of the inner ring includes a small rib portion including an outside diameter larger than an outside diameter of an axial outer end surface of the small-diameter end portion of the inner ring, wherein the cage includes a large-diameter end portion located corresponding to the large-diameter end portion of the inner ring and a small-diameter end portion located corresponding to the small-diameter end portion of the inner ring, wherein the small-diameter end portion of the cage includes a bending portion facing an outer periphery of the small-diameter end portion of the inner ring with a clearance, wherein an inner periphery of the bending portion is located further inside in a diameter direction than an outer periphery of the small rib portion, wherein an axial outer end surface of the bending portion is located further inside in the axial direction than the axial outer end surface of the small-diameter end portion of the inner ring, wherein the axial outer end surface of the bending portion is located further outside in the axial direction than the small rib portion of the small-diameter end portion of the inner ring, wherein liquid lubricates between the inner ring and the outer ring, and wherein inequalities X B represents a width in the axial direction of the inner ring; D represents a bore diameter of the inner ring; X X