core 37 to the rotational bolt 43 over a length of an axial extension region 57 the longer the extension region 57 is the longer the lock housing 12 also is the second embodiment of a padlock 10 shown in fig3 is substantially identical with the padlock 10 of fig1 and 2 but the rotational bolt 42 and the coupling element 30 are configured as a single component that is in one piece the second coupling section 34 b and the drive section 40 are thus omitted in the embodiment shown in fig3 fig4 a shows a perspective view of a possible embodiment of a coupling element 30 which has a first bearing section 32 as well as a second bearing section 38 the first and second bearing sections 32 38 are connected to one another by a shaft section 56 the shaft section 56 as well as the first and second bearing sections 32 38 are arranged substantially rotationally symmetrically along an axis 58 the shaft section 56 has a circular cross section and additionally has a smaller diameter than the bearing sections 32 38 so that the shaft section 56 is directly adjacent to the facing end face of the respective bearing section 32 38 and is set back radially with respect to the respective bearing section 32 38 to establish a rotationally fixed coupling with the cylinder core 37 of the lock cylinder 26 and with the rotational bolt 42 the first and second bearing sections 32 38 each have a semicircular coupling section 34 a 34 b by which it is made possible for the coupling.