An electronic component mounting machine including a component supply device to supply a radial lead component to a supply position by feeding a carrier tape holding multiple radial lead components; and a component transfer device to collect the radial lead component supplied to the supply position and mount the radial lead component to a predetermined mounting position. The component supply device includes a locking section engageable with the feed holes of the carrier tape, and a tape feed section for feeding the carrier tape by sliding the locking section in engagement with the feed hole. The component transfer device includes a component holding section to hold the component main body of the radial lead component held by the carrier tape, and a position control section to control the position of the component holding section when holding the component main body.