IN IN6112DEN2014A
A torsional vibration damping device having a curved rolling surface formed at a location apart in the radial direction from the rotation center of a rotating body that receives torque and rotates and along the circumferential direction of the rotating body said rolling surface having a center of curvature at a location away from the rotation center of the rotating body; and comprising a rolling body caused to come in contact with the rolling surface by the centripetal force caused by rotating together with the rotating body and which rolls along the rolling surface as a result of the torsional vibration of the rotating body. The rolling body has: a hollow first rolling body that rolls along the rolling surface; and a second rolling body arranged inside the first rolling body so as to roll along a second rolling surface formed inside the first rolling body.
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