Patent ID: 7527584

Claim:
A subassembly comprised of at least two machine parts including: an outer machine part comprising a tensioning roller including a running disk made of steel, the outer machine part having an internal circumferential surface; a cooperating inner machine part having an external circumferential surface, the inner machine part comprising a raceway ring of a rolling bearing with an internal circumference on which the raceway is defined, the internal circumferential surface of the outer machine part and the external circumferential surface of the inner machine part being fastened one over the other by means of compression connection; the outer and inner machine parts being so positioned along an axis with respect to each other that the dimensions of the inner and outer machine parts radially overlap; the respective materials of the inner machine part and the outer machine part are selected such that the outer machine part is deformed radially outward into the plastic range of material strain, and the inner machine part is subject to a contraction, wherein the wall thickness of the outer machine is selected such that the contraction of the inner machine part corresponds to an expected level of contraction induced by an outer machine part having a predetermined greater wall thickness, at maximum radial overlap of the compression connection, where the outer machine part of the predetermined wall thickness would remain within a range of elastic deformation.