550 Ton Capacity Seyi Straight Side Press For Sale by 550 Ton Capacity Seyi Straight Side Press For Sale Model: HSD-550-144-61 Total Capacity: 550 U.S. Tons Bolster Size: 144″ x 61″ Ram Size: 144″ x 61″ Stroke: 12″ Shut Height: 30″ Adjustment: 10″ Speed: 25-50 SPM