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 extensive range of drive, connection, motion control, safety, and safety components to provide a complete bundle from a single source.
We offers system design assistance, taking the guess work out of product selection. Our years of app experience assures that elements of the design process are believed. We also offer complete 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 managing capacities from 1/4 ton to 100 tons. They may be used individually 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 made of ductile iron and proportioned to support 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 gear (drive sleeve). The worm shaft is supported on antifriction tapered roller bearings with external seals provided to avoid lack of lubrication (sealed radial bearings on the MJ, 1/4 , 1/2, and 1 ton systems). 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 high strength bronze worm gear (drive sleeve). The worm shaft is supported on anti-friction tapered roller bearings with exterior seals provided to prevent loss 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 Course 2-C (Centralizing) tolerances. Jack lift shaft business lead tolerance is approximately ±0.004″ per foot.
Designed with state-of-the-artwork CAD and CAE systems and adhering to stringent production requirements, these screw jacks fulfill all the necessary safety, cost-efficiency, and durability mandates of the application.