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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.
Screw & Nut Controls Application Analysis Form

Duff-Norton Engineers will be pleased to make recommendations for your specific requirements. There is no obligation for this service - simply complete the form below. If you would like to discuss your application with a Duff-Norton
engineer, call 1-800-477-5002.

If you prefer,  Click Here to print a blank Application Analysis Form (pdf), complete the form, and send to Duff-Norton at the fax number or address shown below. If you would like to send a sketch of your application or design drawings in complete confidence, mail or fax to:

Duff Norton Company
PO Box 7010
Charlotte, NC 28241
704-588-1994 FAX

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If the environment is explosive or hostile, where will the operator be located?

Motor Enclosure

Controls Enclosure

Motor Mounting Other  

Additional Gearing

Orientation (Description)

Controls Mounting    Other  

Control Requirements volts   phaze   hz  


Features    in./min2  

Indicators (Specify)

Alarms (Specify)

Communication (Specify)

Limit Switches

Accuracy for Positioning (in.)

Number of Positions

Velocity Regulation

Duty Cycle (From Above)

Acceleration and Deceleration rates (from above)

Line Shaft Accuracy

Load Conditions (from above)

Screw and Nut most appropriate for this application:

Controls Needed