Patent ID: 7257974

Claim:
Deep-rolling roller head of a deep-rolling tool for deep-rolling, by means of deep-rolling rollers, radii or recesses on the main and lifting bearing journal of a crankshaft, while the crankshaft rotates in a rotational direction, with a prismatic, flat approximately rectangular housing, on whose one front side, which faces the bearing journals to be deep-rolled of the crankshaft, two roller cages are arranged, each having first front sides, which are at a mutual distance from each other and at the same time at a distance from the longitudinal centre of the housing as well as having recesses, in which at least one deep-rolling roller is rotatably guided loosely with play and which each have second front sides, supported on parts of the housing or on an L-shaped retainer having at least one long arm, which is arranged so that it can be adjusted and fixed on the housing, wherein a section of the front side of the housing facing away from the rotational direction of the crankshaft has a projection, on which one of the roller cages is supported with its second front side, whilst the L-shaped retainer, which can be adjusted and fixed relative to the housing, is provided on a section of the housing facing the rotational direction of the crankshaft and the other roller cage is supported with its second front side on an end of a long arm of the L-shaped retainer wherein the longitudinal centre of the housing and the rotation centre of the bearing journal to be deep-rolled of the crankshaft lie in the same plane, in relation to which the rotation centre of the deep-rolling roller(s) is shifted by an offset against the rotational direction of the crankshaft, the projection of the front side having a supporting surface for the second front side of one of the two roller cages, which is at a given distance from the longitudinal centre of the housing and is greater by an amount of the offset than a distance of the end of the long arm of the L-shaped retainer from the longitudinal centre of the housing.