Bit for boring machine

摘要

The chisel holder, has one or more accommodations in which holding components are inserted, which maintain the mounting in the rotary direction of the chisel. The accommodations (35) are formed as conical holes and are machined into the support surface (34) of the chisel holder (30) supporting the mounting (20). The conical holes taper from the support surface (34). The holders (36) are inserted with extensions into the conical holes. To the extension a head piece is connected, which retains the mounting. The head pieces of the holders have a greater hardness than the mounting.