| 摘要 |
<p>A cutting bit (1) for use in a heavy-duty mining, drilling or milling operation is disclosed. The cutting bit comprises a generally conical body (15), a first end (11) of which presenting a cutting point (13) and a second end (12) of which presenting an axially extending recess (14), having a generally convex surface portion, and having locking means (19) for releasably and rotatably connecting the cutting bit to a protruding part (22) of a bit holder (2). The recess has an entrance portion presenting a generally conical surface portion. A corresponding bit holder (2) is presented as well as a system comprising such cutting bit (1) and bit holder (2).</p> |
