Bit holder and base part

Details Bit holder and base part Bit holder and base part

E - Fixed Constructions

21

C

E21C 35/19 (2006.01) E21C 35/193 (2006.01)

Patent

CA 2722823

The invention relates to a bit holder having an insertion projection and having a holding projection, the holding projection comprising a bit receptacle, and the holding projection protruding at least locally from or beyond the insertion projection in the tool feed direction. A bit holder of this kind is designed in service-life-optimized fashion by the fact that the holding projection comprises a supporting segment having a rigid, shaped--on supporting surface that is arranged at least locally in front of the insertion projection in the feed direction. The invention further relates to a base part for receiving an aforementioned bit holder.

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