TAPERED ROLLER BEARING

To ensure that segment holders will not be broken up nor tapered rollers will not fall off from pockets of segments even when an inner ring assembly is turned upside down when the inner ring assembly is to be incorporated in an outer ring. In a tapered roller bearing in which a segment holder divided into a plurality of segments 20 in a circumference direction is used in an inner ring assembly, which is incorporated into an outer ring 12, guide claws 24 are provided on an outer-diameter side of adj acent columnar portions 23 of each pocket 16 of a holder 17 to allow the tapered rollers 15 to be inserted into the pockets 16 from an inner-diameter side of the segments 20. An engaging portion 27 is provided on a large-diameter-side lateral-surface of a large-diameter-side arc-shaped portion 22 of the segment 20. A connecting member 25, which is to be wound around on a large-diameter side of the segments 20 arranged in a ring shape, is made to pass through the engaging portion 27, and ends of the connecting member 25 are removably connected together by a fastening member 30, so that adjacent segments 20 are butted together and fixed.