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Duff-Norton manufactures Screw Jacks, Linear Actuators, Electric Cylinders, Rotary Unions, Acme and Ball Screws & Nuts, Rail Maintenance Equipment and Cubic Screw Jack. 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. Duff-Norton has been ISO 9001 registered since 1994. Our products are specially designed for a variety of industrial and commercial applications. The primary markets we serve include; steel forming equipment, packaging, industrial machinery, electrical & electronics, food and beverage, ergonomics, construction, printing, tire & rubber, paper, metal industries, wood products, metal fabrication and communications. 
Rail Maintenance Equipment Application Analysis Form

Application Analysis Form
* Required Fields
Name *  
Company *  
Address *  
City *  
State *  
Zipcode *  
Phone *  
Email *  

Number of Systems

No. of Jacks per System

Capacity per Jack  tons

Capacity per System  tons


Group Participation/Lift of Load

Voltage  Volts


Lifting Speed  in/min.  

Height of Load Anvil  
In Lowest position  in/min.
Stroke  in/min.
In Upper Position  in/min.

Load Arm

   Load Arm    in.

Synchronization Control

Maximum Overall Height Restrictions

Place of Operation

Environment (i.e. Extreme Heat Explosion-Proof, etc.)


Application / Vehicle Type (Description)