Abstract: An offset crankshaft for driving a plurality of adjacently-positioned straw walker racks in a self-propelled agricultural machine, in particular a combine harvester, which includes shaft sections extending in an alternating horizontal and diagonal pattern in the shaft longitudinal direction, each of its horizontal shaft sections passing through a pivot bearing of a straw walker rack, its two shaft ends being rotatably mounted in the combine harvester housing, the crankshaft being statically and dynamically balanced via the variation of the offset angle, by way of which the out-of-balance forces are minimized without the need for additional balancing masses, and by way of which a quiet running behavior of the straw walker crankshaft is attained.