Bearing ring mounting for rotary drum

In a rotary drum having a bearing ring loosely mounted upon the drum periphery for circumferential movement relative to the drum;

• the improvement comprising a plurality of axially extending support plates mounted on said drum in underlying relationship to said bearing ring, and a pair of limiting rings mounted on said support plates at the axially opposite sides of said bearing ring to restrict axial movement of said bearing ring relative to said drum while accommodating circumferential movement of said bearing ring relative to said drum.