Förband för momentöverföring mellan en axel och ett på axeln anbringat element

A jointing for torque transfer between at least one shaft (1) and at least one element placed (2) on the shaft (1) is provided, The shaft (1) comprises at least two eccentrically placed sections (3), wherein the combined axial cross-section (12) of at least two of said sections (3) corresponds to a through-going hole (5) in the element (2) or elements (2) placed on the shaft (1), which enables torque transfer between the shaft (1) and an element (2) placed on the shaft (1), when said element is placed over at least two of said sections (3). At least one of the at least two eccentrically placed sections (3) is at least as wide (7) in the length axis of the shaft (1) as the hole (5) for said shaft (1) in the element (2) placed on the shaft (1), which enables rotation of the element (1) placed on the shaft (1) without any torque transfer when it is positioned with the hole (5) axially entirely over a section (3) of such width (7).