Ease of use, high reliability, and low maintenance make wormgear screw jacks ideal for a wide variety of applications. They can be used to lift, pull, shift, or align any load, even if highly unbalanced, with perfect synchronization. The same cannot be obtained using other methods. Unimec mechanical jacks are absolutely IRREVERSIBLE i.e. they can support their loads without the need to employ brakes or other locking systems. The jacks can be used individually or in groups properly connected with shafts, joints, and/or bevel gearboxes. They can be driven by electric motors (with either alternating or direct current) as well as hydraulic or pneumatic motors and can be operated manually or with any other type of transmission. In addition to the models shown on the following pages, Unimec can produce jacks custom-designed to meet the requirements of particular machines. Special seals allow the jacks to operate in a trouble-free manner with long-life lubricant.