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With high-performance plastics and additive manufacturing, two modern technologies which combined promise maximum freedom in construction and high abrasion resistance meet. In the igus test laboratory, tribological filaments of iglidur material J260 went up against conventional 3D print filaments (ABS) and injection-molded parts of the same igus material. Intensive linear and rotating test runs were carried out and evaluated in the in-house test laboratory on hardened, ground shafts of both steel and stainless steel over a period of several months. Because additive manufacturing with lubricant- and maintenance-free high-performance plastics is still a comparatively young field, the material experts at igus GmbH encountered an open-ended experiment.

Tribo-filament comes out ahead of ABS material
The result was surprising. It was clear that in both the linear and rotating tests, the abrasion resistance of bearings printed with tribological filament were comparable to the classical injection-molded components, even on both shafts. Thus where abrasion resistance is concerned, the printed components are almost on a par with the injection-molded components. Once again, the tests also clearly demonstrated that in comparison with conventional 3D print materials, the coefficients of friction for tribological filament are especially low. Thus in experiments pitting ABS against tribological filament, the rotating test on the stainless steel shaft even resulted in complete failure of the ABS part, while friction loss for tribological filament was still low. With these actual tests, the testers could demonstrate yet again how motion plastics play out their strengths in movement, even in 3D print. This is why it is possible for printed parts such as bearings or worm gears to be directly installed and used across industries.

Additive manufacturing as another step For igus, additive manufacturing is one more step to give the design engineer the greatest possible freedom in construction with lubricant- and maintenance-free plastics. The motion plastics specialist igus already introduced the world's first tribological filament for 3D printers last year, and has now expanded the series to a total of four materials. Since the Hannover Messe, igus has also offered a 3D print service. Customers can turn to igus with their 3D data and have their parts printed quickly and without complications. Delivery times for printed parts depend primarily on the complexity of the components; still, here too the goal is delivery within 24 hours.

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