screw jack

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screw jack

[′skrü ′jak]
(mechanical engineering)

jackscrew

A jack in which a screw is used for lifting; carries a plate which bears on the load.

jackscrew

jackscrew
A jack operated by a screw mechanism. Normally, it is used for raising light aircraft and lighter loads. Also known as a screw jack.
References in periodicals archive ?
Whether you use ordinary gunsmithing screw drivers, screw jacks, or the drilling method, as soon as the screw starts to turn out, I use penetrating oil down into the screw shaft to enhance removal.
A PRECISION machined worm screw jack from Thomson has been designed to provide powerful lifting and positioning where space is at a premium.
A screw jack was then used to attach the wall's buttress system to the footings.
The ActionJac Machine Screw Jack incorporates an alloy steel worm, which drives a high tensile bronze worm gear.
A leveling system consisting of three 18-tonne electric-motor-driven mechanical screw jacks is provided for the alignment and support of the fixture.
The screw jacks are arranged in a U configuration with a speed-increasing 1:5 worm gearbox based on a screw jack gearbox used as the primary drive.
Self-locking motorized screw jacks raise the hood and conveyor clear of the pan for complete cleaning access.
Tenders are invited for Screw Jacks For Dropping Of Draftgear As Per Drg No.
Self-locking motorized screw jacks raise the hood and paddle/submerger conveyor clear of the pan for complete cleaning access.