The invention relates to a distribution unit (10) for a granular commodity such as grains (34), fertilizer or the like, in particular a sowing unit (12) of a distribution or sowing machine. The unit (10, 12) comprises a housing (14) having an approximately circular and/or circle-segment shaped inner lateral surface (16), at least one inlet opening (18) for conveyed granular commodities or conveyed grains (34), a conveying device (22) rotating concentrically in the housing (14) for the conveyed granular commodity or the conveyed grains (34) and at least one outlet opening (24) which connects approximately tangentially to the inner lateral surface (16). The conveying device (22) has one or more openings and/or steps on the outer region thereof, which, in a first housing and/or conveying region, form a pocket with the housing inner lateral surface (16) in which the grains (34) are compacted and conveyed circularly by centrifugal forces, supported by the conveying device (22). In a second housing and/or separation region, only one single grain (34) remains in the opening or in the step of the conveying device (22) due to a modified contour of the inner lateral surface (16) of the housing (14) and under centrifugal force influences, while excess grains (34) are separated and conveyed back to the first housing region for re-conveying.
