Based on the proven ROBA® DS steel disk pack coupling, mayr® power transmission developed a weight-optimized aluminium version. Compared to the steel version, the outer diameter of this new design has been reduced by up to 10 mm; the mass and mass inertia range from 40% to 60% of the steel version, depending on the design and size. The performance density, however, remains unchanged. It is tailored to meet the requirements of high-speed applications, for example in the field of test bench technology.