Patent ID: 8075465

Claim:
A roller assembly for a production machine comprising: an inner wheel base capable of attachment to a driving axle of a production machine, an expandable outer ring, formed from a single element, comprising a cylindrical outer surface and an inner rim, which ring is co-operatively connectable to said inner wheel base, whereby the circumference of said expandable outer ring is adjustable, wherein the expandable outer ring includes one or more holes each suitable for accommodating the shaft of a bolt and the inner wheel base is provided with one or more corresponding threaded holes suitable for engaging said bolt, wherein said outer ring is configured to mount an outer roller cover circumferentially around the cylindrical outer surface, wherein the expandable outer ring comprises one or more expansion slits, and wherein the outer surface of the expandable outer ring is eccentric with the inner rim of the expandable outer ring, such that said outer surface is concentric with the driving axle when said expandable outer ring is adjusted to secure the outer roller cover thereto.