Boring spindle sets with an external drive (without integrated electric motor) allow for the universal use of processing machines for manufacturing tasks with combined milling and boring work. Another trend is the continued development of traditional boring machines into highly-dynamic machines with spindle speeds of up to 5,000 rev./min. According to its own information, A.Mannesmann Maschinenfabrik has many years of expertise both in the manufacture of boring spindle sets as well as in the machining of associated rams according to customer drawings...