Braking band of a disc brake disc

A braking device comprising at least one portion thereof comprising a braking surface adapted to come into contact with an opposite facing braking surface to apply a braking action;

• said braking surface being circumferentially free from obstacles to allow a relative rotation between said braking surface and opposite facing braking surface when mutually in contact;
• said braking surface defining, in any point with respect to a revolution axis (X-X) thereof if said braking surface is fixed, or a rotation axis (X-X) thereof if said braking surface is rotative, an axial direction (A-A) parallel to said revolution or rotation axis (X-X), a radial direction (R-R) orthogonal to said axial direction (A-A) and said revolution or rotation axis (X-X), a circumferential direction (C-C) orthogonal to said axial direction (A-A) and said radial direction (R-R) and equally spaced apart from said revolution or rotation axis (X-X), and a tangential direction orthogonal to said axial direction (A-A) and said radial direction (R-R);
• wherein
• at least one support connecting portion is included radially outside said braking surface, either radially away from or outside said braking surface or either radially close to or inside said braking surface;
• and wherein
• at least one cooling portion is included circumferentially and laterally to said support connecting portion;
• and wherein
• the cooling portion has a plurality of axially through-openings adapted to increase a heat exchange surface and unadapted to create connecting surfaces,
• said cooling portion comprises a plurality of cooling fins separated from one another by said axially through-openings, and
• said support connecting portion comprises a plurality of cooling fins separated from one another by said axially through-openings.