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Screw Jack

ActionJac™ Worm Gear Screw Jack systems are ruggedly designed and produced in standard models with load handling capacities from 1/4 ton to 100 tons. Metric capacities are also available from 5 kN to 200 kN.

  • No "standard" travel lengths (built to specification). 
  • Ductile iron housings proportioned to support the rated capacity of the unit. 
  • Use individually or in multiple screw jack arrangements
  • Alloy steel worm drive with high strength bronze worm gear (drive sleeve).
  • Anti-friction tapered roller bearings with external seals to prevent loss of lubrication.
  • The drive sleeve is supported on anti-friction tapered roller or ball thrust bearings.
  • Premium finishes are available including Epoxy, Outdoor, Marine, or per customer specification.

Selecting the Proper Screw Jack

Machine Screw Jack

Advantages

  • Low noise (no rolling components)
  • Ideal for vertical and light loads
  • Pre-loaded nut assembly reduces backlash
  • Safe for static loads
  • Lower cost

Ball Screw Jack

Advantages

  • Improved speed, force, duty cycle, acceleration
  • Longer life cycle (low friction)
  • Requires less motor power
  • Greater positioning accuracy
  • Higher static load and lower dynamic load

Stainless Steel Screw Jack

Advantages

  • Corrosion resistance for demanding environments
  • Low noise (no rolling components)
  • Ideal for vertical and light loads
  • Pre-loaded nut assembly reduces backlash
  • Safe for static loads