The invention proceeds from a separating device having at least one portioning unit (12a-f) which is provided for spacing main groups (14a-f) apart from at least one product column (18a-f) which is fed in a continuous feed movement (16a-f) and for forming the main groups (14a-f) from the at least one product column (18a-f) which is fed in, by an acceleration at least substantially in the direction of the feed movement (16a-f). It is proposed that the portioning unit (12a-f) is provided for returning into an initial position (20a-f) in order to form the next main group (14a-f), while the at least one product column (18a-f) which is fed in a feed movement (16a-f).