Screw Jack Systems provide extensive lifting and positioning style solutions for a wide variety of industries. Highly accurate and intensely reliable machine screw and ball screw jacks are matched with an comprehensive range of drive, connection, movement control, safety, and security components to provide a complete package from a single source.

We offers system design assistance, taking the guess work out of product selection. Our years of program experience assures that elements of the design process are considered. We also offer full assembly drawings, which gives time saving worth and guarantees the correct system components are integrated into your design.
Worm Equipment Screw Jack systems are ruggedly designed and produced in standard versions with load handling capacities from 1/4 ton to 100 tons. They may be used separately or in multiple plans. There are no “standard” travel lengths and all Worm Gear Screw Jack systems are designed to specification.
The jack housings are made of ductile iron and proportioned to aid the rated capacity of the machine. MJ, 1/4 ton, and 1/2 ton models have light weight aluminum housings.

Each Worm Gear Screw Jack incorporates an alloy metal worm which drives a high strength bronze worm gear (drive sleeve). The worm shaft is supported 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 models). The drive sleeve is backed on antifriction tapered roller or ball thrust bearings. Rotation of the drive sleeve causes the lifting screw to 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 backed on anti-friction tapered roller bearings with external seals provided to avoid lack of lubrication. The drive sleeve is usually 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, dependant on 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-artwork CAD and CAE systems and sticking with stringent manufacturing requirements, these screw jacks fulfill all the necessary safety, cost-efficiency, and strength mandates of the application.