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Choose Your Region and Language

world-map-na
North America
English
Additional Websites:
Canada (FR)
world-map-la-north
Latin America - North
English
Additional Websites:
America Latina (ES)
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Latin America - South
English
Additional Websites:
America Latina (ES) Brasil (PT)
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APAC
English
Additional Websites:
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Australia
English

Duff-Norton Screw Jacks

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Duff-Norton has manufactured screw jacks since 1883 and offer a variety of screw jack types including ball screw jacks and machine screw jacks.

When comparing the two screw jack types at the same capacity level, ball screw jacks, being much more efficient, require less motor horsepower to move the same load than do the equivalent machine screw jacks.

However, many machine screw jacks are inherently load holding, offer a broader capacity range and a greater selection of special features or materials. Machine screw jacks are often favored in applications subject to constant vibration.

Machine Screw Jacks Features & Benefits

  • Anti-backlash models available for ¼- to 150-ton capacities
  • Stainless steel and metric models available for most capacities
  • Precise positioning within thousandths of one inch
  • Self-locking: models featuring higher gear ratios are inherently load holding if the screw jack is not subject to vibration
  • Uniform lifting speeds: since many actuators feature the same gear ratios different capacities can be used in the same application to lift unevenly distributed loads with uniform speeds

Machine Screw Jack Application - Bottling Assembly

Ball Screw Jacks Features & Benefits

  • Continuous duty models available
  • Anti-rotation models available
  • Move loads and apply force more efficiently than machine screw actuators
  • Require less power by reducing screw friction
  • Permit faster operation and longer life under load
  • Long predictable ball screw and ball nut life
  • Handles full load in tension or compression

Ball Screw Jack Application - Paper Production

 

Industrial screw jacks are used to lift, position (push, pull, tilt, roll, etc.) and support all kinds of loads. Some applications where our screw jacks have been used include plastics machinery, beverage bottling systems, aircraft assembly and paper production.

Duff-Norton’s collection of screw jacks range from mini screw jacks supporting up to 1,000 pounds to acme screw jacks with a capacity up to 350 tons and everything in between.

One of the greatest advantages of our industrial screw jacks is that they can be tied together mechanically, to lift and lower in unison. Browse all our available types of screw jacks to find the right solution that meets your linear motion needs.  

 

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