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 . <EOS>