Screw Jack Systems offer comprehensive lifting and positioning design solutions for a wide selection of industries. Highly accurate and intensely reliable machine screw and ball screw jacks are matched with an extensive range of drive, connection, movement control, safety, and safety components to provide a complete package from an individual source.
We offers system design assistance, taking the guess work out of item selection. Our years of app experience assures that all elements of the design process are considered. We also offer complete assembly drawings, which provides time saving worth and guarantees the right system components are built-into your design.
Worm Gear Screw Jack systems are ruggedly designed and produced in standard versions with load managing capacities from 1/4 ton to 100 tons. They might be used individually or in multiple arrangements. There are no “standard” travel lengths and all Worm Gear Screw Jack systems are built to specification.
The jack housings are made of ductile iron and proportioned to aid the rated capacity of the unit. 
MJ, 1/4 ton, and 1/2 ton models have aluminum housings.
Each Worm Gear Screw Jack incorporates an alloy steel worm which drives a high strength bronze worm equipment (drive sleeve). The worm shaft is backed on antifriction tapered roller bearings with exterior seals provided to prevent loss of lubrication (sealed radial bearings on the MJ, 1/4 , 1/2, and 1 ton units). The drive sleeve is supported on antifriction tapered roller or ball thrust bearings. Rotation of the drive sleeve causes the lifting screw to worm screw jack translate or rotate, dependant on jack configuration.
The Inch and Metric Worm Gear Machine Screw Jacks incorporate an alloy or stainless worm which drives a higher strength bronze worm gear (drive sleeve). The worm shaft is supported on anti-friction tapered roller bearings with exterior seals provided to avoid lack of lubrication. The drive sleeve is supported on anti-friction tapered roller or ball thrust bearings. Rotation of the drive sleeve causes the acme thread lifting screw to translate or rotate, depending upon jack configuration.
The threads are precision formed, typically using Class 2-C (Centralizing) tolerances. Jack lift shaft lead tolerance is approximately ±0.004″ per foot.
Designed with state-of-the-art CAD and CAE systems and adhering to stringent production requirements, these screw jacks meet up with all the required safety, cost-efficiency, and sturdiness mandates of the application.