A stabilising device for stabilising articles during raising and grouping thereof, comprising: an abutting bar, configured and predisposed for being abutted by the articles which are raised upwards during operations for grouping thereof; characterised in that it comprises: a support element of the abutting bar; vertical sliding guides; the support element being predisposed so as to be coupled to the vertical sliding guides and in order to be able to freely slide along the vertical sliding guides so as to enable displacement upwards of the abutting bar pushed by the articles which are raised upwards during the operations for grouping thereof; a contact element, predisposed on the support element so as to be translatable with respect to the support element, activating means of the contact element, configured and predisposed so as to be able to be activatable for moving the contact element from a non-operative position, at which the contact element is distant from the vertical sliding guides, to an operative position, at which the contact element is in contact with at least one of the vertical sliding guides so as to provide a friction force resistant to the free sliding of the support element with respect to the vertical sliding guides and therefore provide a braking action to the movement of the abutting bar. an abutting bar, configured and predisposed for being abutted by the articles which are raised upwards during operations for grouping thereof; characterised in that it comprises: a support element of the abutting bar; vertical sliding guides; the support element being predisposed so as to be coupled to the vertical sliding guides and in order to be able to freely slide along the vertical sliding guides so as to enable displacement upwards of the abutting bar pushed by the articles which are raised upwards during the operations for grouping thereof; a contact element, predisposed on the support element so as to be translatable with respect to the support element, activating means of the contact element, configured and predisposed so as to be able to be activatable for moving the contact element from a non-operative position, at which the contact element is distant from the vertical sliding guides, to an operative position, at which the contact element is in contact with at least one of the vertical sliding guides so as to provide a friction force resistant to the free sliding of the support element with respect to the vertical sliding guides and therefore provide a braking action to the movement of the abutting bar. a support element of the abutting bar; vertical sliding guides; the support element being predisposed so as to be coupled to the vertical sliding guides and in order to be able to freely slide along the vertical sliding guides so as to enable displacement upwards of the abutting bar pushed by the articles which are raised upwards during the operations for grouping thereof; a contact element, predisposed on the support element so as to be translatable with respect to the support element, activating means of the contact element, configured and predisposed so as to be able to be activatable for moving the contact element from a non-operative position, at which the contact element is distant from the vertical sliding guides, to an operative position, at which the contact element is in contact with at least one of the vertical sliding guides so as to provide a friction force resistant to the free sliding of the support element with respect to the vertical sliding guides and therefore provide a braking action to the movement of the abutting bar.