This sealed deep-groove ball bearing supports the rotating shaft in the metering assembly of a grain drill. It sits in the housing that carries the seed-metering disc or roller, maintaining radial and axial alignment under load. A worn bearing introduces play that causes uneven seed metering and can lead to jamming or premature wear of the drive components. The 2RS designation indicates two contact-rubber seals that retain factory grease and exclude dust and chaff from the bearing raceway. As an original Monosem part, the internal clearance and seal geometry match the housing bore and shaft diameter of the original assembly, eliminating the need for shimming or adapter sleeves during replacement.