Since 1883 Duff-Norton has earned a reputation for reliable, high quality products that meet the industrial lifting, positioning and transfer needs of our worldwide customers. Both our standard and custom designed products are subjected to the same rigorous testing throughout the design process to assure maximum performance and quality. We pioneered the modern day Screw Jacks and many of the features others have often tried to imitate such as Anti-Backlash, Ball Screw, and close mounted motorized and controlled options. Our Linear Actuators and Electric Cylinder product lines are broad and comprehensive and packaged with the latest features. A large selection of Acme and Ball Screws & Nuts uniquely and completely packaged with modern day drives and control components.