Broad, strong Acme threads make these screw jacks better than ball screw jacks for heavy loads, intermittent positioning applications, and where vibration is present. Screw jacks come assembled, threaded, and ready for hookup. Connect a motor or hand-crank shaft to the screw jack shaft to lift, hold, position, and level loads.
Travel distance per turn, also known as screw lead, is the distance a load moves with one revolution of the shaft.
low travel speed,low duty cycles,inherently self-locking
Worm gear screw jack is a basis jack-up part , accomplish the functions such as lifting , dropping , pushing and inverting through worm gear drives screw .

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