| 摘要 |
PROBLEM TO BE SOLVED: To provide a tapered roller bearing cage capable of securing the strength of columnar parts of the cage while functioning to stabilize rollers in an ideal attitude, when subjected to column fall due to machining variations of the cage.SOLUTION: The cage includes a pair of annular parts, a plurality of columnar parts, and pockets for storing and guiding rolling elements. The pockets satisfy relationships of 0.02≤A≤0.35, 0.02≤B≤0.35, 0.1×WC≤A≤0.35×WC, 0.1×WC≤B≤0.35×WC, 0.5×C≤R≤C, and 0.5×C≤R≤C, where WC is the axial size of the cage, Ris the R size of an escape part A provided at a large-diameter-side columnar part end, on the guide face of the rolling element, Ais the circumferential length of the cage, Ais the axial length of the cage, Ris the R size of an escape part B provided at a small-diameter-side columnar end, on the guide face of the rolling element, Bis the circumferential length of the cage, Bis the axial length of the cage, Cis a large-diameter-side R machining width size of the end of the rolling element, and Cis a small-diameter-side R machining width size thereof. |
