A single bearing reel can prevent foreign matters from entering an inner side of a reel body, and the foreign matters can be removed even if they are in the reel body； a reel barrel (13) of the single bearing wire winding wheel (10) is provided with a wire winding portion (16) and a first flange portion (8a)； the wire wining wheel body (11) comprises a main body portion (21), a support shaft (14) and a cover portion (21e)； the support shaft (14) is arranged on the main body portion (21), and the reel barrel (13) is supported to rotate； the cover portion (21e) covers at least partial of an outer periphery of the flange (8b) of the reel barrel (13)； the cover portion (21) is provided with at least one hole portion (21g).本發明的課題係在於防止異物侵入到捲線器本體的內部，並且即使在侵入之情況亦可迅速地除去之單軸承捲線器。用以解決課題之手段為，單軸承捲線器(10)的捲筒(13)具有：捲線主體部(16)、及第1凸緣部(8a)。捲線器本體(11)具有本體部(21)、支承軸(14)、及蓋部(21e)。支承軸(14)係設在本體部(21)，將捲筒(13)可旋轉地支承。蓋部(21e)係用來覆蓋捲筒(13)的凸緣部(8b)的至少一部分之外周面。蓋部(21e)具有至少1個孔部(21g)。
