摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing having lower torque.SOLUTION: A cylindrical roller bearing 1 includes an outer ring 3, an inner ring 2, a plurality of cylindrical rollers 4 provided between the outer ring 3 and the inner ring 2, and an annular cage 10 holding the plurality of cylindrical rollers 4 at spaces from one another in the peripheral direction. The cylindrical roller bearing 1 enables lubricating oil to flow from one axial side into a space between the outer ring 3 and the inner ring 2. The cage 10 has a small-diameter annulus ring part 11 provided on one axial side, a plurality of column parts 13 extending from the small-diameter annulus ring part 11 to the other axial side, and an annular extension part 15 extending from the small-diameter annulus ring part 11 and covering an outer annular space A1 formed between the small-diameter annulus ring part 11 and an end 7 on one axial side of the outer ring 3, from one axial side.SELECTED DRAWING: Figure 1 |