| 摘要 |
The present invention relates to a rolling member (11) for a device (1) for damping torsional oscillations, extending along a longitudinal axis (X'), the rolling member (11) comprising a first part (16) made from a first material and a second part (17) made from a second material different from the first material, characterised in that the first and second parts are disposed such that there is at least one plane perpendicular to said axis (X') in which: - the first part (16) defines the outer lateral surface (18) of the rolling member (11), and - the second part (17) is inside the first part (16). |
