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Duff-Norton manufactures Screw Jacks, Linear Actuators, Electric Cylinders, Rotary Unions, Acme and Ball Screws & Nuts and Rail Maintenance Equipment. Since 1883, Duff-Norton has earned a reputation for reliable, high quality products meeting the industrial lifting, positioning, and process heat transfer needs of our customers worldwide.

Introducing System Controls for our commercial actuator series!

With the proper handset and control box the user can either operate multiple actuators synchronously or independently. Our synchronized systems are capable of synchronizing two linear actuators and with two independently operated actuators; while our independently operated systems can control up to 4 actuators. Most system components are in stock so contact us now to get started!

"Design Online"
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.

CMLA Linear Actuator

Duff-Norton's CMLA is our NEWEST addition to our Linear Actuators. CMLA is a global product line developed in conjunction with sister company
Pfaff-Silberblau and Duff-Norton Europe. The CMLA is an electromechanical actuator line with a variable configuration covering the 2,500N to 10,000N category. For more information about the CMLA Linear Actuator click here to download a copy of the brochure.


Duff-Norton launches the NEW DWA Series Rotary Union designed for use in general purpose industrial process applications.

New DWA Rotary Union

  • Designed for water, non-corrosive fluids and oil applications
  • Dual flow capability available
  • High precision ball bearings for smooth running and long life
  • Aluminum housing with stainless steel shaft
  • No maintenance required

Click here to download the product brochure, including specifications and dimensional drawings.