| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a bearing device which can be manufactured with simple work and which can achieve low cost, a manufacturing method of the bearing device, and an information recording and reproducing device including the bearing device.SOLUTION: A bearing device includes: an inner ring rolling surfaces 39 and 49 in which outer radiuses of inside end parts 36b and 46b of a first inner ring 36 and a second inner ring 46 are formed smaller than a first separation distance K1, and in which the outer radius is formed to become larger from the inside toward the outside; and outer ring rolling surfaces 34 and 44 in which inner radiuses of outside end parts 31a and 41a of a first outer ring 31 and a second outer ring 41 are formed larger than a second separation distance K2, and in which the inner radius is formed to become smaller from the outside toward the inside.</p> |
