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Hennlich, d.o.o.
Lead screw drives are machine elements that convert rotary movement into linear motion (transmission threads). igus high helix and trapezoidal lead screws are available in three different lead screw materials (steel, stainless steel and aluminium) and in combination with more than seven different lead screw nut materials. Friction-optimised iglidur materials allow quick, simple online configuration and ordering of applications that require no lubrication or maintenance. The dryspin technology igus has developed features asymmetrical threads that extend service life and a flat flank angle that enhances efficiency. The geometry of the lead screw nut suitable for the threaded rod is variable, even in the standard item. There are geometries for everything from cylindrical designs to designs with flanges or spanner flats to clearance-reducing lead screw nuts, such as zero-backlash, low-clearance and anti-backlash lead screw nuts.
Wear is an important aspect of parts in moving applications. Wear-resistant polymer such as our iglidur materials are the solution for minimising wear and extending component service life. Their tribological properties make iglidur® materials perfect for all applications in which a good coefficient of friction and very low wear are key. The largest test laboratory in the industry takes up 3,800m², and igus performs research and development and an extensive series of experiments there. The tribological properties of all materials are tested in various test series in the interest of minimising wear and maintenance intervals. They are particularly low-friction and wear-resistant and ensure lubrication-free, low-maintenance operation. iglidur® polymers offer very good tribological properties, ensuring a longer service life for polymer components.
Annually, a large number of tests and material examinations are conducted at the numerous test facilities:
Tribology is the science of friction and wear. Tribologically optimised polymers are those that exhibit minimal friction behaviour and low wear rates. Base polymers, solid lubricants and reinforcements are combined in our dry-tech products in such a way that the bearings, unlike those made of metal, do not require additional lubrication, all desired characteristics are met and only the slightest friction, heat generation and abrasion occur." - Dr.-Ing. Ralf Selzer, Head of Research and Development of plain bearings
If you do not wish to experiment, but you want to test materials for your application before use, or you have an unusual application and are looking for a suitable solution? No problem. We will test your application in our test lab and will use our expertise to find the best igus® solution for you.
Load: 50N
stroke: 140mm
speed: 450rpm
Test duration: 150,000 cycles
1. Competition's geometry 10x3/POM + PTFE
2. TR10x3/AISI 304 iglidur® J/injection moulding
3. DS10x3/AISI 304 iglidur® J/injection moulding
The evaluation of the wear test for the product with the dimensions 10x3 made of stainless steel showed that our dryspin® thread Ds10x3 can achieve a wear rate up to 25% lower, a service life up to 25% longer and greater efficiency compared to the competition and the trapezoidal thread Tr10x3.
At a customer's request, the motion plastics® specialist igus compared dryspin® Ds10x25 lead screws with two competing products featuring identical high helix thread dimensions. In both in a wear test and an efficiency test, the rail technology products were tested for up to 630,000 cycles.
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1. Competing geometry 1/ POM + PTFE
2. Competing geometry 2 /POM + PTFE
3. dryspin® Ds10x25 / iglidur® J/injection moulding
Even after 630,000 cycles, the igus® dryspin® nut exhibited significantly lower wear and a higher degree of efficiency than the competing geometries.
The expert can quickly help engineers find the right lead screw system part for their application and will also predict service life. Finally, order the parts or request further information from us.
The configurator enables engineers to quickly find the right lead screw and machine the pins from both sides. The application generates a dimensioned drawing of the configuration for you. You can then order the lead screw or request further information.
