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US 2021/0372467 A1Published application
Bearing device
AssigneeRigaku Corporation
InventorsYasuyuki Shimazaki, Shinichi Oya
Life of this patent
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Abstract
Only an outer spacer (33) is cooled by an outer spacer cooling structure, thereby causing a temperature difference between an inner spacer (32) and the outer spacer (33). According to this temperature difference, an inner ring (37) of a bearing (31) is displaced relatively to an outer ring (38) in a direction in which a preload inside the bearing (31) decreases.
Claims7
A bearing device for supporting a rotating shaft by a plurality of bearings so that the rotating shaft is freely rotatable, comprising:
- an inner spacer arranged between respective adjacent bearings of the plurality of bearings so as to be in contact with an inner ring of each of the respective adjacent bearings;
- an outer spacer arranged between respective adjacent bearings of the plurality of bearings so as to be in contact with an outer ring of each of the respective adjacent bearings;
- and
- an outer spacer cooling structure for cooling the outer spacer.
1 more element
Dependencies are inferred from the claim text.