Hard-rolling roller head for the deep rolling of the crankpins of a split-pin crankshaft

A hard-rolling roller head for use in deep rolling radii or recesses of adjoining first and second crankpins of a split-pin crankshaft of the type having the first crankpin and the second crankpin offset from one another in a direction perpendicular to a longitudinal axis of rotation of the crankshaft, the hard-rolling roller head comprising:

• a first housing comprising a first inside surface and at least one first extension section, the first housing rotatably supporting a first work roller for deep rolling a first radii or recess of the first crankpin of the split-pin crankshaft;
• a second housing comprising a second inside surface and at least one second extension section, the second housing rotatably supporting a second work roller for deep rolling a second radii or recess of the second crankpin of the split-pin crankshaft;
• wherein the first housing further comprises a plurality of bearing components rotatably supported in the first housing, each of the plurality of bearing components protruding from the first inside surface;
• wherein the first housing and the second housing are supported in the hard-rolling roller head adjacent one another so that the plurality of bearing components simultaneously engage the second inside surface and enable the first housing and the second housing to move independently relative to one another in a direction of a longitudinal axis bisecting the first housing.