Cigüeñal de peso optimizado

摘要

The present invention relates to a crank-shaft (1) for an internal combustion machine having at least one main bearing journal (10) for the crankshaft (1) in a crank-housing and at least one pin bearing journal (11) for connecting a connecting rod to the crank-shaft (1). According to the invention at least one of the bearing journal surfaces (12, 13) comprises at least one recess area (14, 15) with a depth (d) of at least 1 mm.