(57) The invention relates to a round-surfaced, elongated spindle (23) comprising in its
end an axial slot (24) for receiving a double-folded abrasive band (2'). For automating
the replacement of this abrasive band the surface (26), with a circular cross-section,
of the spindle (23) comprises a level surface (25) for directing the slot (24) when
the level surface (25) meets the guiding surface during the rotation of the spindle
(23) along the external guiding surface, stopping the rotation movement of the spindle.
In addition, an apparatus is described for automated double-folding the abrasive band,
cut to desired length, and placed with the abrasive surface outwards, and for inserting
it into the slot (24) of the said spindle (23).
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