Screw Jack Systems provide extensive lifting and positioning design solutions for a wide selection of industries. Highly accurate and extremely dependable machine screw and ball screw jacks are matched with an considerable selection of drive, connection, movement control, safety, and safety components to provide a complete bundle from a single source.
We offers system style assistance, taking the imagine work out of item selection. Our years of software experience assures that elements of the look process are believed. We also offer full assembly drawings, which provides time saving worth and guarantees the correct system components are built-into your design.
Worm Equipment Screw Jack systems are ruggedly designed and produced in standard models with load managing 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 support the rated capacity 
of the machine. MJ, 1/4 ton, and 1/2 ton models have aluminium housings.
Each Worm Gear Screw Jack incorporates an alloy steel worm which drives a high strength bronze worm equipment (drive sleeve). The worm shaft is backed 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 units). The drive sleeve is definitely supported on antifriction tapered roller or ball thrust bearings. screw jack china 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 steel worm which drives a higher strength bronze worm gear (drive sleeve). The worm shaft is supported on anti-friction tapered roller bearings with external 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 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 satisfy all the required safety, cost-efficiency, and sturdiness mandates of the application.