B2 series bag closing machines w ith either DS-2II or DS-C bag closing heads. B2 Bag closing systems are highly mobile and the bag sewing head is adjustable. Simply operating handle can move up and down the sewing head. Provision of casters allows the machine to be moved easily. The low position of the carrier table allows easy loading and un-loading of bags. The carrier table is equipped with anti-derailing device and automatic return device.