Abstract: The invention concerns a mounting system suitable for mounting drive and driven means [2, 4] of a mechanical power transmission system relative to each other. The mounting system comprises a set of interchangeably connectable modules that can be altered to adapt the same mounting system for various different drive-and-driven means configurations. The system is characterised therein that the modules of the system are interchangeably connectable in such a way that a drive shaft [3] and a driven shaft [5] of drive and driven means [2, 4] mounted, on the mounting system are aligned and orientated parallel to each other in use, and particularly such that shaft shoulders of the drive and driven shafts [3, 5] are aligned, in anyone of the mounting configurations so that there is a straight belt path between the two shafts at all times.