The invention relates to a device for metering a granular or grainy materialin a distributormachine, comprising a housing (1)； an inlet opening (2) which is formed on thehousing (1)and through which a granular or grainy material can be introduced in thehousing (1) formetering； an outlet opening (3) which is formed on the housing (1) and throughwhich thegranular or grainy material can be discharged out of the housing (1) aftermetering； a meteringspace (4) which is formed in the housing (1) in such a way that granular orgrainy material inthe housing (1) can be moved from the inlet opening (2) via the metering space(4) to theoutlet opening (3)； a metering wheel (5) which is arranged in the meteringspace (4) on adrive shaft (6), and which is configured to meter the granular or grainymaterial supplied viathe inlet opening (2)； a mounting opening (12) which is formed on the housing(1) and viawhich the metering wheel (5) can be exchangeably mounted in the metering space(4)； and amounting component (11) which is detachably arranged in the mounting opening(12) in amounted position, and this in turn is arranged at least partially welded ontothe housing (1),wherein the mounting component (11) has a receiving unit (10) for detachablyreceiving themetering wheel (5), in such a way that the metering wheel (5) received on thereceiving unit(10) is mounted on the drive shaft (6) when arranging the mounting component(11) in themounted position, and in such a way that, when detaching the mountingcomponent (11)from the mounted position, the metering wheel (5) is forcibly detached fromthe drive shaft(6), such that the metering wheel (5) can be removed from the metering space(4) in this wayand can be detached from the housing (1) together with the mounting component(11). Adistributor machine is also provided for distributing a granular or grainymaterial, such asseeds, fertiliser or grit.
