CPC G11B 5/4813 (2013.01) [F16C 19/54 (2013.01); F16C 25/083 (2013.01); F16C 2370/12 (2013.01)] | 19 Claims |
1. A bearing device comprising:
an outer member having a tubular shape;
a shaft member held inside the outer member; and
a first bearing, a second bearing, a third bearing, and a fourth bearing, rotatably holding the shaft member with respect to the outer member and arranged in this order in an axial direction, wherein
an outer circumferential surface of an outer ring of each of the first bearing, the second bearing, the third bearing, and the fourth bearing is fixed to an inner circumferential surface of the outer member, and
a spring applying a constant pre-load is provided between inner rings of the second bearing and the third bearing.
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