TAPERED ROLLER BEARING

PROBLEM TO BE SOLVED: To provide a tapered roller bearing capable of improving the workability of incorporating a rolling ring to be mounted/demounted, without increasing incorporating work steps.SOLUTION: A tapered roller bearing 10 consists of an outer ring assembly 8 having a cage 4 holding a plurality of tapered rollers 3 and being incorporated into an outer ring 1, and an inner ring 2 to be mounted/demounted thereon/therefrom. The cage 4 has a plurality of column parts 5 defining a plurality of pockets 7, and two annular parts 6A, 6B to which the ends of the plurality of column parts 5 are linked at both sides, respectively. Each pocket 7 has a pair of protrusions 20 on the inside faces of the column parts 5 defining the pocket 7, extending from positions radially inside of the axis of the tapered roller 3 to the side of the tapered roller 3 held in the pocket 7. The pair of protrusions 20 are provided at positions offset to the side of one of the two annular parts 6A, 6B.SELECTED DRAWING: Figure 1 【課題】組み込み作業の工程を増やすことなく、着脱される転動輪の組み込み作業性を向上させ得る円筒ころ軸受を提供する。【解決手段】この円筒ころ軸受１０は、複数の円筒ころ３を保持した保持器４が外輪１に組み込まれた状態である外輪組立体８に内輪２が着脱されるものであり、保持器４は、複数のポケット７を仕切る複数の柱部５と、複数の柱部５の端部を両側でそれぞれ繋ぐ二つの円環部６Ａ、６Ｂとを有し、各ポケット７は、各ポケット７を仕切る柱部５の内側面に、円筒ころ３の軸線よりも径方向の内側の位置から各ポケット７に保持される円筒ころ３の側に向けて張り出す一対の突起部２０を有し、一対の突起部２０は、二つの円環部６Ａ、６Ｂのうち一方側にオフセットした位置に設けられている。【選択図】図１