Staking apparatus and staking method for bearing unit, manufacturing method and manufacturing apparatus of hub unit bearing, and manufacturing method of vehicle

A staking method for a bearing unit comprising:

• preparing a first press die that has a first rotation axis, and a second press die that has a second rotation axis and is disposed apart from the first press die in a circumferential direction about a reference axis;
• supporting a bearing unit in which a first member and a second member are combined in an axial direction on a base;
• and
• pressing the first press die and the second press die against the bearing unit, including a first process and a second process, the first press die being disposed such that the first rotation axis is inclined with respect to the reference axis, the second press die being disposed such that the second rotation axis is inclined with respect to the reference axis,
• wherein the first press die has a first processing surface portion and a second processing surface portion disposed outward in a radial direction compared with the first processing surface portion,
• wherein the second press die has a third processing surface portion and a fourth processing surface portion disposed outward in a radial direction compared with the third processing surface portion,
• wherein in the first process, the first processing surface portion and the third processing surface portion are pressed against the bearing unit, and
• wherein in the second process, the second processing surface portion and the fourth processing surface portion are pressed against the bearing unit while the second processing surface portion and the fourth processing surface portion face inward in the radial direction.