The Screw Jacks are the types of jacks, which are functioned by turning the lead screws. In this form these are commonly utilized to lift moderate heavy weights like vehicles. More usually these are employed as the adjustable supports for heavy loads, such as large vehicles or the foundations of houses. These can not only assist heavy loads but not lift it. The advantage of these Screw Jacks that they are self-locking that means when the rotational power on the screw is separated, it will remain inactive where it was left and will not turn backwards, irrespective of how much load it is bearing.
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