Impact drill for hard material such as stone - has shank with sleeve shrunk onto rod and both are welded onto blade carrier

摘要

An impact drill uses a tool suitable for drilling stone and other hard materials. It has a shank consisting of a cylindrical rod (1) around which is attached a shrunk-on or rolled-on outer tube. Both are welded to a block (6) which carries the cutting blade (5). The design ensures that the full force of each impact is exerted on the cutter, and bending is prevented.