The connection has a link up force applied (F) by a crankshaft (8) between construction units which can be connected. Circular contact areas (3, 4, 5) are provided between a connection and the hub (2) and partly do not run perpendicular to a construction unit axle (X). The contact area is partly concave or bent to the construction unit axle (X) and runs in such a manner that the contact area lies radially outside. The contact area has a surface roughness from 4 to 16 m. An angle (W) between the non running perpendicular contact areas and the construction units amounts to 1.5 deg.
