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.
A bearing device includes: an inner ring rolling surfaces 39 and 49 in which a first outer ring 31 and a second outer ring 41 are fixed to a sleeve 50 in a state in which they are applied with pre-load relatively with each other, in which outer radiuses of outside end parts 36a and 46a of a first inner ring 36 and a second inner ring 46 are formed to be smaller than a first separation distance K1 respectively and in which the outer radius is formed to become larger than the first separation distance K1; and outer ring rolling surfaces 34 and 44 in which inner radiuses of inside end parts 31b and 41b of the first outer ring 31 and the second outer ring 41 are formed to be larger than a second separation distance K2 respectively and in which the inner radius is formed to become smaller than the second separation distance K2.
| JP2009519379 | How to deposit amorphous carbon |
| WO/2017/174062 | RING |
| JP2006170244 | BACKUP ROLL UNIT |
OZAWA AKIO
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Shingo Suzuki
Nishizawa Kazumi