A turbo engine rotor comprising a shaft-blade connection means, the rotor having a circumferential direction, a radial direction, and an axial direction, the rotor comprising a rotor shaft and at least one blade, the shaft comprising at least one groove extending at least in the radial and the axial direction, the blade comprising a root extending at least in the axial and in the radial direction, the root being arranged in the groove, at least one undercut recess being provided at the groove and in a shaft post, and extending at least in the circumferential direction, the undercut recess being delimited at a radially outer side by a shaft load bearing wall, the blade root comprising at least one lobe, said lobe being arranged in the undercut recess, and said lobe being delimited on a radially outer side by a lobe load bearing wall, wherein the shaft load bearing wall comprises a plain surface area being inclined, when seen along the axial direction, with respect to the radial direction at a first angle (a) and forming a shaft bearing surface, the lobe load bearing wall comprising a plain surface area being inclined, when seen along the axial direction, with respect to the radial direction at the first angle (a) and forming a lobe bearing surface, the lobe bearing surface and the shaft bearing surface being offset in the circumferential direction with respect to each other and overlap along a common circumferential extent; wherein the lobe bearing surface is circumferentially offset with respect to the shaft bearing surface towards a body of the blade root; wherein an end of a lobe bedding surface tangentially adjoins the lobe bearing surface and extends towards a tip of the lobe; wherein the end of the lobe bedding surface is a cylindrically curved surface, with a cylinder axis extending parallel to the lobe lengthwise extent, and having a first bedding radius and a first width; wherein an end of a shaft bedding surface tangentially adjoins the shaft load bearing surface and extends distally from a body of the shaft post; wherein the end of the shaft bedding surface is part of a cylindrical surface, with the cylinder axis extending along the undercut recess lengthwise extent, having a second bedding radius and a second width; the turbo engine rotor being characterized in that: the convex end of the lobe bedding surface circumferentially overlaps with a section of the shaft bearing surface and the convex end of the shaft bedding surface circumferentially overlaps with a section of the lobe bearing surface; the first bedding radius of the end of the lobe bedding surface and the second bedding radius of the end of the shaft bedding surface, respectively, are chosen significantly larger than the first width and the second width and a concavely curved surface section is provided on the blade root and extends from a load bearing wall of another lobe to a non-load bearing wall of the lobe; an area of decreasing concave curvature radii (Ra2, Rb2,... Ry2) is provided on said concavely curved surface section extending from the load bearing wall to the non-load bearing wall and the radii decreasing from the load bearing wall to the non-load bearing wall. the convex end of the lobe bedding surface circumferentially overlaps with a section of the shaft bearing surface and the convex end of the shaft bedding surface circumferentially overlaps with a section of the lobe bearing surface; the first bedding radius of the end of the lobe bedding surface and the second bedding radius of the end of the shaft bedding surface, respectively, are chosen significantly larger than the first width and the second width and a concavely curved surface section is provided on the blade root and extends from a load bearing wall of another lobe to a non-load bearing wall of the lobe; an area of decreasing concave curvature radii (Ra2, Rb2,... Ry2) is provided on said concavely curved surface section extending from the load bearing wall to the non-load bearing wall and the radii decreasing from the load bearing wall to the non-load bearing wall.