For clamping and centering of workpieces with internal bore.
The centering clamping mandrel can be machined to the required seating diameter (e.g. by turning/milling). It must be noticed that before machining the centering clamping mandrel, it will be expanded approx. 0,1 mm over the clamping diameter. To machine the mandrel, a locking ring will be provided.
Thanks to the lateral handling it can also be used for blind hole drilling.