Screw Jack Systems offer extensive 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, motion control, safety, and protection components to supply a complete package from a single source.
We offers system style assistance, taking the imagine work out of product selection. Our years of program experience assures that elements of the design process are believed. We also offer full assembly drawings, which gives time saving value and guarantees the right system components are worm screw jack integrated into your design.
Worm Gear Screw Jack systems are ruggedly designed and produced in standard versions with load handling capacities from 1/4 ton to 100 tons. They might be used individually or in multiple plans. There are no “regular” travel lengths and all Worm Gear Screw Jack systems are designed to specification.
The jack housings are constructed with ductile iron and proportioned to support 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 higher strength bronze worm gear (drive sleeve). The worm shaft is supported on antifriction tapered roller bearings with external seals provided to prevent loss of lubrication (sealed radial bearings on the MJ, 1/4 , 1/2, and 1 ton devices). The drive sleeve is usually 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 high strength bronze worm gear (drive sleeve). The worm shaft is supported on anti-friction tapered roller bearings with exterior seals provided to prevent 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 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 sticking with stringent production requirements, these screw jacks fulfill all the required safety, cost-efficiency, and toughness mandates of the application.