The invention concerns a cap magazine (2, 21, 43, 431, 83, 831) for the provision of electric cap caps (6, 61) in a supply position in an application area (14, 141, 54, 541, 94, 941) for a recording by a welding arm, with the cap magazine an interior (18, 181, 62, 621, 101, 1011),in which the electrode cap is irregular and an axis (12, 121, 52, 521, 92, 921),to include the electrode heads, which are inoperable in the interior, in a direction of rotation (29) around the axis to the supply position. The electrode caps, which are inoperable in the interior, are pre-tensioned to the supply position in the direction of rotation around the axis. One cap magazine unit includes two cap magazines.
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