This bearing assembly supports a rotating shaft within the fertilizer spreader's metering or distribution system. The unit is a pre-assembled, sealed bearing housed in a cast-iron or pressed-steel flange block that bolts directly to the machine frame. It accepts the shaft that drives the metering rollers or spinner discs. A worn or seized bearing causes uneven material flow, leading to inconsistent application rates. The manufacturer's original specification matches the housing bore and shaft diameter of the spreader's mounting point, so no additional shimming or machining is required during replacement.