JACK LIFTING SCREWS

Product Description

A jack lifting screw, also known as a screw jack or jackscrew, is a mechanical device used to lift, lower, or position heavy loads by converting rotary motion into linear motion. Its a classic example of simple yet powerful engineering.

Key Components:

• Lead Screw: A threaded rod that moves vertically to lift or lower the load.

• Worm Gear or Bevel Gear: Transfers rotational force to the lead screw.

• Housing: Encloses the mechanism and provides structural support.

• Handle or Motor: Used to rotate the screw manually or electrically.

How It Works:

When the handle or motor turns the worm gear, it rotates the lead screw. Depending on the design, either the screw itself moves up and down (translating type) or a nut travels along a stationary screw (rotating type), lifting the load in the process2.

Applications:

• Lifting vehicles (like in car jacks)

• Adjusting aircraft stabilizers

• Supporting heavy structures (e.g., house foundations)

• Industrial automation and machinery positioning