Screw Jack Systems provide comprehensive lifting and positioning design solutions for a wide variety of industries. Highly accurate and extremely dependable machine screw and ball screw jacks are matched with an extensive range of drive, connection, motion control, safety, and protection components to supply a complete bundle from an individual source.
We offers system design assistance, taking the guess work out of item selection. Our years of app experience assures that elements of the design process are considered. We also offer full assembly drawings, which provides time saving value and guarantees the right system components are integrated into your design.
Worm Gear Screw Jack systems are ruggedly designed and stated in standard models with load handling capacities from 1/4 ton to 100 tons. They may 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 machine. 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 equipment (drive sleeve). The worm shaft is supported on antifriction tapered roller bearings with exterior seals provided to avoid lack of lubrication (sealed radial bearings on the MJ, 1/4 , 1/2, and 1 ton products). The drive worm screw jack sleeve is backed 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 certainly 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 Course 2-C (Centralizing) tolerances. Jack lift shaft business lead tolerance is approximately ±0.004″ per foot.
Designed with state-of-the-art CAD and CAE systems and sticking with stringent manufacturing requirements, these screw jacks meet all the required safety, cost-efficiency, and strength mandates of your application.