We are offering here the Worm Gear Screw Jacks that is a mechatronics motion execution unit which cleverly combined electric motor, reducer system and lead screw transmission etc. together. Jack incorporates an alloy steel worm which drives a high strength bronze worm gear (drive sleeve). The worm shaft is supported on antifriction tapered roller bearings with external seals provided to prevent loss of lubrication (sealed radial bearings on the MJ, 1/4 , 1/2, and 1 ton units). Worm screw rotate the worm gear; the rotating worm gear move the lifting screw up and down in linear motion way. Worm screw is rotated manually (manual screw jack) or by a motor (electric screw jack). Worm Gear Screw Jacks are made available by us in various types.