Profile: Blackhawk Co. manufactures mohawk chucks. We offer clamping bolt with splitting of the inner-member locks that expand roll chuck securely to the shaft. Our chucks hold the desired tension on the web of rolls of material such as paper, paperboard, foil, textiles and all different types of film. Our chuck is used on converting machinery such as unwinders, winders, laminators, coaters, waxers, bag machines, roll stands, packaging machines and carbon paper machines.