Brake band of disc brake disc

A braking device (1) comprising at least one portion having a braking surface (3) adapted to be in contact with an opposing braking surface to apply a braking action; the braking surface (3) has no obstacle in the circumferential direction to allow relative rotation between the braking surface and the opposing braking surface when the braking surface (3) and the opposing braking surface are in contact with each other; the braking surface (3) is defined at any point relative to the axis of rotation (X-X) of the braking surface with the braking surface (3) being fixed; in the event that the braking surface (3) is rotating, the braking surface is defined at any point relative to the axis of rotation (X-X) of the braking surface; wherein the braking surface (3) comprises, on the radially outer side, at least one support connection portion (7), which is radially remote from or located radially outer of the braking surface (3); or the support connection portion is radially close to or located radially inside the br