 Grob ScrewJacks are used in many different industrial sectors for a wide range of applications involving lifting, lowering, pivot motion, positioning and compression.
 Grob Screw Jacks are manufactured in 11 sizes, ranging from 0.25t to 50t. Larger gear boxes are also available.
The G (basic system) and the LM (traveling nut) versions can be supplied with either an upright or inverted spindle.
The standard gearboxes are delivered with a RTS-rolled-trapezoidal-thread spindle. The standard material is C15. It is also possible to order materials or use other types of spindles with different dimensions and pitches, like the KGT ball screw; GRT thread-rolling ball screw; WGT planetary roller screw, the RPTS precise rolled trapezoidal-thread spindle or the WTS whirled trapezoidal-thread spindle.
The standard MJ0, MJ1 and MJ2 housings are manufactured in aluminum. Other housings are made of cast iron. (Other materials and surface finishes are available.) Machining on all sides of the housing enables mounting all the faces. The gearboxes are pre-filled with a standard grease at the factory. Other oils are also available. Replacement parts are also available.
A complete CAD software library for GROB ScrewJack systems is available in version 2.0 (either DWG of DXF for designers free of charge.) Please contact Concise Motion Systems to
help obtain the CAD software library.
Because of the nature of these unique products, we recommend that prior to placing any order that you contact Concise Motion Systems to discuss your application requirements in more detail.
The Technical Documentation catalogue is a large file (5 MB) and will take a few minutes to download. Please use the catalogue to locate information on screw jacks, options, etc. Please note that the index may be utilized to locate the information that you need by placing your cursor over that section and clicking it.
Download Technical Documentation [pdf]
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WormGear ScrewJacks