A component supply apparatus for sequentially supplying components to a predetermined position by separating a covering tape from an accommodating tape. The components are accommodated in the accommodating tape at predetermined intervals along a longitudinal direction of the tape. The components are covered with the covering tape. The apparatus includes a reel around which the separated covering tape is wound. The reel includes a reel body having a winding barrel removably mounted on a driving shaft and a guide flange positioned at one end of the driving shaft and a guide flange positioned at one end of the driving shaft. An inelastic auxiliary ring is provided so as to wind the covering tape about the peripheral surface thereof. The ring includes a rotation preventing portion and is removably mounted on a peripheral surface of the winding barrel.