To provide a bearing device capable of enhancing mechanical durability of a vibration damping member provided on a bearing structure.
In the bearing device comprising a bearing 10, a bearing supporting body 20 and a rotating body 22 with a vibration damping member S disposed between the bearing supporting body or the rotating body and the bearing, a groove forming a gap is formed in the surface of the vibration damping member or a surface facing the vibration damping member. When foreign matters enters between the vibration damping member and the member facing the vibration damping member, the foreign matters are captured in the cap and removed to avoid damages of the surface of the vibration damping member by the foreign matters, and pitching breakage of the vibration damping member. Complementary uneven grooves are formed in the vibration damping member and the member facing the vibration damping member so as to prevent relative slide between the vibration damping member and the member facing the vibration damping member, and occurrence of fretting wear or spalling breakage is suppressed.
FUNAHASHI MAKOTO
MATSUMOTO AKIRA
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