Charging device in particular an exhaust-gas turbocharger, having a bearing house and a bearing cartridge arranged therein for bearing a shaft, - having a securing pin for securing the bearing cartridge against rotation and displacement in the axial direction, wherein, in the installed state, the securing pin engages in an opening on the bearing cartridge, - wherein the securing pin has a head and a shaft section comprising an externally threaded section, - wherein a pin receptacle is provided in the bearing housing, having a first section comprising an internally threaded section and having a second section and a third section, wherein the third section lies between the internally threaded section and a bearing opening of the bearing housing and is designed to be complementary to the shaft section of the securing pin and serves as a positioning opening, - wherein the second section has a larger diameter than the first section and merges into the first section via a radial step, - wherein the radial step forms an axial stop for the head of the securing pin, - wherein the externally threaded section and the internally threaded section form a thread, via which, in the installed state, the securing pin is screwed in the pin receptacle, wherein a tight abutment of the head on the radial step and a preferably play-free engagement of the shaft section in the positioning opening bring about an enclosure of the thread, characterised in that a length of the shaft section of the securing pin is dimensioned so that, during installation, it first engages in and aligns the opening of the bearing cartridge, before the externally threaded section interacts with the internally threaded section. - having a securing pin for securing the bearing cartridge against rotation and displacement in the axial direction, wherein, in the installed state, the securing pin engages in an opening on the bearing cartridge, - wherein the securing pin has a head and a shaft section comprising an externally threaded section, - wherein a pin receptacle is provided in the bearing housing, having a first section comprising an internally threaded section and having a second section and a third section, wherein the third section lies between the internally threaded section and a bearing opening of the bearing housing and is designed to be complementary to the shaft section of the securing pin and serves as a positioning opening, - wherein the second section has a larger diameter than the first section and merges into the first section via a radial step, - wherein the radial step forms an axial stop for the head of the securing pin, - wherein the externally threaded section and the internally threaded section form a thread, via which, in the installed state, the securing pin is screwed in the pin receptacle, wherein a tight abutment of the head on the radial step and a preferably play-free engagement of the shaft section in the positioning opening bring about an enclosure of the thread, characterised in that a length of the shaft section of the securing pin is dimensioned so that, during installation, it first engages in and aligns the opening of the bearing cartridge, before the externally threaded section interacts with the internally threaded section.