Fastening mechanism for round shaft bits of mining machines or tunnel construction machines, comprises a bit which is provided with an integral circular attachment section between bit head and bit shaft

摘要

The fastening mechanism (10) comprises a bit (20) which is provided with an integral, concentrically circular attachment section (26) located between the bit head and the bit shaft (23). A holding block (1) is provided which has a supporting collar (7) for the circular attachment section (26) of the bit shaft.