Abstract: A padlock device for the shaft of two-wheeled vehicles, which comprises a pin (3), a lever (4) mounted on said pin (3) and a sliding bolt (8), a sliding lock body (9) actuated by a key (10) and a helical compression spring (11), and means for locking the lever (4) in rotation with respect to the pin (3) which are activated by actuating the key (10) in conjunction with a sliding of the assembly in which said bolt (8) and lock body (9) are capable of adopting forward and rearward operational positions which correspond to the active and non-active states of these locking means.