| 摘要 |
When assembling an outer ring into a rolling bearing unit with a retainer plate, a retainer plate 7a in which large-diameter sections 21 are provided at plural locations in the circumferential direction of a support hole 13a is used, and with a small-diameter stepped section 9a of the outer ring 5a fitted inside this support hole 13a, a punch 23 presses parts of the circumferential edges of the large-diameter sections 21 of the side surface in the axial direction of the retainer plate 7a toward a step surface that exists between the outer-circumferential surface of the outer ring 5a and the base section in the axial direction of the small-diameter stepped section 9a and plastically deforms the parts of the circumferential edges of the large-diameter sections inward in the radial direction to form engagement protrusions, while at the same time, the engagement protrusions are engaged with an engagement groove 12a that is formed around the outer-circumferential surface of the small-diameter stepped section 9a. |
