| 摘要 |
PROBLEM TO BE SOLVED: To prevent the fall and axial wobbling of a cage 36 irrespective of an increase of an axial thickness of a loading cam device 35 accompanied by the operation of the loading cam device 35, and to secure the rigidity and toughness of the cage 36.SOLUTION: Protrusions 40, 40 protruding toward a base end face of a disc 38 and a single side face of a cam plate 37 are formed at radially outer-shifted portions of portions in which phases of the protrusions related to the circumferential direction are displaced from respective pockets 39, 39 out of axial both side faces of the cage 36. Furthermore, recesses 41, 41 whose depths related to the axial direction become the deepest at the center in the circumferential direction, and become shallow as progressing toward both ends are formed at radially outer-shifted portions which oppose the respective protrusions 40, 40 out of the a base end face of the disc 38 and the single end face of the cam plate 37. |
