Jackscrew
Mechanical lifting device operated by turning a leadscrew / From Wikipedia, the free encyclopedia
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A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew. It is commonly used to lift moderate and heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable supports for heavy loads, such as the foundations of houses.[citation needed]
This article relies largely or entirely on a single source. (July 2017) |