| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing including holder that can deal with high revolution.SOLUTION: A roller bearing 1 comprises: an inner ring 2; an outer ring 3; a plurality of rollers 4; and an annular holder 5. The holder 5 includes a toric portion 10, and a plurality of columnar portions 20 extending axially from the toric portion 10 to be circumferentially apart from one another, and a pocket 7 holding each roller 4 is formed between the circumferentially adjacent columnar portions 20. The columnar portions 20 each include a guide surface provided on a pocket surface 24 facing an outer circumferential surface of each roller 4 for guiding and rolling the holder 5. Furthermore, the columnar portions 20 each include a slide contact portion 21 provided radially outward to come in slidable contact with an inner circumferential surface 50 of the outer ring 3 when the columnar portion 20 deforms radially outward by a centrifugal force.SELECTED DRAWING: Figure 1 |
