The invention relates to an arrangement in connection with a feed roller of a harvester head of a forestry machine, which arrangement includes a feed roller (1) and an operating device driving the feed roller (1), which feed roller (1) includes at least one attachment flange (2) for attaching the said feed roller (1) to the said operating device, and at least two toothed discs (3) attached to the said attachment flange (2), which said toothed discs (3) are arranged to act as gripping surfaces against a tree. The said feed roller (1) further includes spacer pieces (4) between the attachment flange (2) and the toothed discs (3), and attachment means (17) for connecting the attachment flange (2), the toothed discs (3), and the spacer pieces (4) to form the feed roller (1).
