Screw Jack Systems offer extensive lifting and positioning design solutions for a wide variety of industries. Highly accurate and intensely dependable machine screw and ball screw jacks are matched with an extensive selection of drive, connection, movement control, safety, and protection components to provide a complete bundle from an individual source.
We offers system design assistance, taking the imagine work out of item selection. Our years of software experience assures that all elements of the look process are considered. We also offer full assembly drawings, which gives time saving value and guarantees the correct system components are integrated into your design.
Worm Gear Screw Jack systems are ruggedly designed and stated in standard versions with load handling capacities from 1/4 ton to 100 tons. They may be used separately or in multiple arrangements. There are no “regular” travel lengths and all Worm Gear Screw Jack systems are built to specification.
The jack housings are constructed with ductile iron and proportioned to support 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 metal worm which drives a high strength bronze worm gear (drive sleeve). The worm shaft is backed on antifriction tapered roller bearings with external seals provided to prevent lack of lubrication (worm screw jack sealed radial bearings on the MJ, 1/4 , 1/2, and 1 ton units). The drive sleeve is definitely supported on antifriction tapered roller or ball thrust bearings. Rotation of the drive sleeve causes the lifting screw to translate or rotate, depending upon 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 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 Course 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 adhering to stringent manufacturing requirements, these screw jacks meet up with all the necessary safety, cost-efficiency, and toughness mandates of your application.