Screw Jack choice

How to choose the right jack

Jacks selection is limited by two constrains:
Load capacity and horsepower. The load capacity of the Jack is limited by the structural constrains of its components. The horsepower limit of the Jack is a result of the ability to dissipate heat generated from the internal frictions.

Main design criteria:

  • load capacity – Fmax;
  • torque and power calculation;
  • efficiency;
  • multiple screw jack arrangement;
  • overloads;
  • safety factor;
  • self-locking;
  • mechanical stops;
  • screw jack stroke;
  • critical work screw length;
  • maximum work screw length versus load;
  • critical work screw length.