Hand-held tool with pneumatic hammer action, for chiseling or drilling, includes loose impact bush between external collars on header component

摘要

The header (8) includes two axially-spaced, external radial collars (9a, 9b). An impact bush (10) surrounds the header externally and coaxially. This bush is guided freely, to make limited axial movements between the collars. The external diameter of the bush (A) is smaller than the internal diameter (I) of the guide tube (6). The guide tube includes an intercepting component (11) for the flying piston (5) in an idling impact position. Tangentially, the impact bush (10) has two-component construction, the parts being e.g. welded together.