Tool-holding device (11) for a machining tool, comprising: a tool-holder body (13); a receiving part (15) defined in the tool-holder body (13); a retaining element (17) provided with a pair of mutually cooperating jaws (17a,17b); a female seat (19) between the jaws for an engaging male portion (21) of a machining tip (23), the jaws (17a,17b) being capable of taking a locking configuration, in which the engaging portion (21) of the tool (23) is firmly locked within the seat (19) of the retaining element (17), and a disengaged configuration in which the engaging portion (21) of the tip (23) can be detached from the retaining element (17); a moveable component (25) which bear the main load of holding the retaining element (17) in the receiving part (15) when the retaining element (17) is in the configuration in which it engages the tool (23).

A cutting tool includes a cutting bit having a cutting element and a cylindrical shank located below said cutting element and wherein said cylindrical shank has a clip groove having at least one surface that is at least one flat side, at least one convex surface, or at least one concave surface. The surface of the clip groove of the cylindrical shank biases against at least one of an internal radial tab of a retainer sleeve to inhibit axial movement and to inhibit rotation of the cylindrical shank of the cutting tool.