“…Since couplings of this type were developed according to their role in creating a type order of the Bulgarian state standard, conclusions about the nature of the behavior of each of them under the same load conditions may apply to the entire group. This study was carried out in order to analyze the behavior of the coupling [8] under conditions of extreme misalignment. For a SEGME 25 coupling [7], there is an allowable radial misalignment of 0.3 mm and an allowable axial misalignment of 0.5 mm, and for 2 of 7 SEGME 63, the same misalignments are provided, respectively, at 0.5 and 0.6 mm [9].…”