The plain bearing surface of the crank shaft (1), at a fraction of the effort and expense, it is formed into a desired It was, when shaped by a microscopically small recess (27), in order to significantly reduce the friction in the use of a crankshaft, the center bearing and crankshaft bearings, in the axial direction in the circumferential direction, of the bearing surface greatly It is proposed to build only the desired area to receive the load. Because, given the only free working gap only several m relative to the tool, it is the fact itself already, because difficult to achieve.BACKGROUND 5a
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