Introducing elevating drives [worm screw jacks] from electropower group that are extensively used inmoving upward] and inverted [screw moving downward] mounting, they are available having linear travel of stationery screw and roating screw, having flange nut mounted on the screw, offering linear travel. Beside standard thread at screw end, optional accessories such as mounting flange/clevis/hand wheel can also be supplied. Motorised units are also offered. Though currently being offered having lifting force 10 kn [1 metric tonne] to 100 kn [10 metric tonness], units out of this range can also be offered. Elevating drives/machanical autuators are economical and simple solutions to various costly and cumbersome systems and are preferred in various industries such as steel, cement, conveyors, large antennae, collieries,etc.