Duff-Norton has been manufacturing Acme and Ball Screws and Nuts for our actuator products for decades, and is now applying those years of experience to bring you an expanded assortment of screws and nuts for your application requirements. Acme Screws & Nuts offer excellent load ratings and Centralizing class screw & nut assemblies. Ball Screws & Nuts offer excellent load ratings, 90% efficiency, and long predictable life ratings.

Save Engineering Time. Duff-Norton's website was first in the industry to offer 'Designs On Line'. This 2D/3D modeling page that allows our worldwide customers to download our Linear Actuators including Mechanical Actuator (Screw Jack), Electric Actuator and Electric Cylinder models directly into their project designs in a format for their specific CAD system. Click the "2D/3D Modeling" link above to enter our 'Designs On Line' modeling page.

Duff-Norton designs and manufactures a wide range of stage and theater equipment for moving props, lowering podiums, shifting floors and raising and lowering stages.  Duff-Norton uses self- locking acme screws, winches, hoists and scissor lifts to design a reliable custom solution that meets our customer's specific artistic and performance requirements. At Duff-Norton we can reconfigure an existing stage or work with you to design a new stage to meet all of your requirements.