Built-up crankshaft

Given a built-up crankshaft, in particular for internal combustion engines, comprising main bearing journals, crank pins and counterweights plus connecting bolts arranged perpendicular to the axis of the crankshaft and intended for fixing the crank pins on the main bearing journals, the invention consists in that the crank pins 4 rest snugly on the main bearing journals 2 in corresponding recesses in the main bearing journal 2 or in the crank pin 4 and are fixed relative to one another with the connecting bolts 6. This has the advantage, inter alia, of allowing the construction of a crankshaft consisting of simple components that does not require any forming operations, such as forging or casting, for its production. The crankshaft can be mounted in the closed crankcase, a process in which, first of all, the main bearing journals are inserted into the main bearing bores and the crankshaft is then assembled fully by fixing the crank pins and counterweights by means of the bolts arranged perpendicular to the axis of the crankshaft.