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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.
Drive System Components
(Motors, Handwheels)



Drive system motor
Motors can be directly mounted to most Duff-Norton actuators using C-face adapters, directly mounted via speed reducers, or remotely mounted with shafting and couplings. IEC, servo, hydraulic, and air motors can also be supplied upon request. Please download the "Drive System Components" PDF above for more information.


Drive system motor flanges, screw and nut system
Duff-Norton provides complete close coupled Motor to Screw & Nut systems to Limit Switch systems for all application needs. These systems use our End Blocks and Motor Flanges to mount the respective drive and control components into one package. Common system components are; Motor Flanges (Servo, IEC, NEMA frame motors), Servo, IEC, or NEMA motors (brake, non-brake, closely mounted to Duff-Norton Motor Flanges), Ring Kit Encoders (optional, mounted between Duff-Norton NEMA Motor Flanges and NEMA motors), Couplings (needed to connect the screw's journal to the motor shaft - will be included in the motor flange kits), Acme or Ball Screw and Nut (with special length screw journal ends), Limit Switches and Potentiometers (optional), Control panels (custom designed for each application). Please download the "Drive System Components" PDF above for more information.


Drive system flanges
Our motor flanges can be purchased as a kit along with our End Blocks and Limit Switches to form a complete drive system. Motor flange kits include:
- Motor flange
- All required mounting hardware
- Couplings will be specified and should be provided with the Motor Flange kit
Please download the "Drive System Components" PDF above for more information and performance charts.


Gearmotor screw and nut system
Duff-Norton provides complete close coupled Gearmotor / Screw & Nut systems / Limit Switch systems for all application needs. These systems use our End Blocks and Motor Adapters to mount the respective drive and control components into one package. Please download the "Drive System Components" PDF above for more information and performance charts.


Drive system hand wheels
Hand Wheels and Rotary Counters can be mounted together on the same screw end to provide the user with instant positioning data. This combination can be used on one or both screw ends. The Duff-Norton hand wheel is for customers who may require precise positioning, or may have loads which do not require motorized power to adjust.