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Duff-Norton manufactures  Mechanical Actuators (Screw Jacks), Electromechanical Linear Actuators, Electric Cylinders and  Rotating Joints. Since 1883, Duff-Norton has earned a reputation for reliable, high quality products meeting the industrial lifting, positioning, and transfer needs of our worldwide customers and has been ISO 9001 registered since 1994.

SuperCylinders Homeland Security Uses SuperCylinders 2D/3D Models


Electromechanical Actuators
Rotary Union
Duff-Norton introduces new line of Electric Cylinders. SuperCylinders are the perfect fit for critical applications demanding high capacities to 25 tons, high speeds to 136 inches per minute, and stroke lengths up to 13 feet up. Super Cylinders are clevis or trunnion mounted and utilize ball screw or acme screw drive systems. Click above to see how Duff-Norton products have replaced hydraulic and pneumatic cylinders used to protect domestic and international high security installations. 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 above to enter our “Designs On Line” modeling page resulting in greater accuracy and significant design time reduction for engineers.
Need Fast Delivery?
Duff-Norton is continuously evaluating programs that set new industry standards for Customer Service Excellence. Click above to learn more about our exciting Quickship programs with 3 and 5 day shipping on select Mechanical Actuator models, 24 hour shipping on our most popular Electromechanical Actuator models, and 24 hour
shipping on many Rotary Union models.
Screw Jack Linear Actuator Electric Actuator Electric Cylinder
Duff-Norton manufactures screw jacks (mechanical actuators), linear actuators, ball screw actuators, electromechanical actuators, machine screw actuators, rotary unions (rotating joints), and air jacks. A mechanical actuator is a device used to apply a force, push and pull, or move to a position and hold by mechanically converting rotary motion into linear motion. Screw Jacks come in several variations: machine screw, ball screw, micro-miniature and high duty cycle. The Duff-Norton line of screwjacks (mechanical actuators) includes mechanical actuators (machine screw and ball screw) ranging in size from 1/4 ton to 350 tons, stainless steel machine screw actuators, micro-miniature actuators, high duty cycle actuators, motorized machine screw and ball screw actuators, electric cylinders and motor control systems. Accessories include miter gear boxes, c-face motor adapters, limit switches, transducers, visual and digital position indicators, couplings, ball screws and ball screw systems, and locking rings. Screw Jacks are also used for raising and lowering maintenance platforms, opening and closing air dampers, oven doors and sluice gates, and adjusting tooling machine beds, cable tension and workplace tables. In addition to the broad range of applications and industries for mechanical actuators, they are also used as alternatives to hydraulic and pneumatic systems. Duff-Norton manufactures screw jacks (mechanical actuators), linear actuators, ball screw actuators, electromechanical actuators, machine screw actuators, rotary unions (rotating joints), and air jacks. A mechanical actuator is a device used to apply a force, push and pull, or move to a position and hold by mechanically converting rotary motion into linear motion. Screw Jacks come in several variations: machine screw, ball screw, micro-miniature and high duty cycle. The Duff-Norton line of linear actuators includes mechanical actuators (machine screw and ball screw) ranging in size from 1/4 ton to 350 tons, stainless steel machine screw actuators, micro-miniature actuators, high duty cycle actuators, motorized machine screw and ball screw actuators, electric cylinders and motor control systems. Accessories include miter gearboxes, c-face motor adapters, limit switches, transducers, visual and digital position indicators, couplings, ball screws and ball screw systems, and locking rings. Screw Jacks are also used for raising and lowering maintenance platforms, opening and closing air dampers, oven doors and sluice gates, and adjusting tooling machine beds, cable tension and workplace tables. In addition to the broad range of applications and industries for mechanical actuators, they are also used as alternatives to hydraulic and pneumatic systems. Duff-Norton manufactures electric actuators, mechanical actuators (screw jacks), linear actuators, ball screw actuators, machine screw actuators, electric cylinders, rollerscrews, rotary unions (rotating joints), and air jacks. Electric Linear Actuator Products include TracMaster and LinearMaster Actuators, Packaged Controls, Modular Actuators and PowerMaster Motor Cylinders and Synchro Cylinders. This Duff-Norton product line of actuators features load capacities ranging from 100 pounds to 100 Tons, gear or belt drives, acme screw and ball screw systems with various AC and DC input voltages. Packaged Controls operate the extend and retract function of the electric actuator and are available for all Duff-Norton TracMaster and LinearMaster Electric Linear Actuators. Duff-Norton Electromechanical Actuation Products are specially designed for a variety of commercial and industrial applications. These actuators are used for opening and closing, tilting and pivoting, lifting and lowering and positioning. Applications include gates, dampers, oven and processing tank doors, antennas, orthopedic tables and other medical equipment, ergonomic furniture, and agricultural equipment, etc. Custom design is also available for special applications. Electric linear actuators are now being used in place of pneumatics and hydraulics when high maintenance and environmental problems (leaking hydraulic oil) are a concern. Duff-Norton manufactures SuperCylinder™ electric cylinders, mechanical actuators(screw jacks), linear actuators, ball screw and machine screw actuators, electromechanical actuators, rotary unions (rotating joints), and air jacks. Duff-Norton offers the industry's broadcast range of high capacity electric cylinders. From 2 tons to 25 tons choose from clevis or trunnion mounting; offset, right angle, parallel, in-line mounting; standard or stainless steel housings, with speeds ranging up to 380 inches per minute. Duff-Norton electric cylinder products are specially designed for a variety of commercial and industrial applications. These actuators are used for opening and closing, tilting and pivoting, lifting and lowering and positioning. Applications include gates, dampers, oven and processing tank doors, antennas, orthopedic tables and other medical equipment, ergonomic furniture, and agricultural equipment, etc. Custom design is also available for special applications. Electric cylinders linear actuators are now being used in place of pneumatics and hydraulics when high maintenance and environmental problems (leaking hydraulic oil) are a concern.