In the tool changer of the machining centre a rotary joint is used to feed the various tools to the machining head. A high degree of precision is required in order to be able to grip the tools securely at all times.
Due to the large center clearance of the Franke slewing rings, the complete drive system can be moved inwards. A labyrinth seal and a lip seal protect the raceways from chips and coolant. The tool holders are mounted directly on the outer ring. The selected preload ensures high accuracy and a uniform rotational resistance for smooth running and precision.