Abstract: An automated saw for high speed splitting of suspended carcasses, such as hog carcasses, through the backbone as the carcasses continuously move along a carcass rail includes a splitting station and a back roller station located on opposite sides of the carcass rail. The splitting station includes a splitting saw that can be driven in three directions, including horizontally towards a carcass to begin cutting, vertically down to make the cut and horizontally parallel to the carcass rail to match the speed of the moving carcass as the cut is made. A guide roller carried by the splitting station positions the backbone in a known position relative to the saw. The back roller station includes a back roller for positioning the carcass relative to the saw as the cut is made. The back roller is also movable in three directions, including horizontally in to contact the carcass, vertically down, and horizontally parallel to the carcass rail to match the motion of the saw.