Drill bit for producing drilled holes has an undercut in masonry, a drill bit shank and a boring head with a diagonal cut for rubbing out the undercut

摘要

A bit stop (6) has an annular absorbing element (9) made from a shock-absorbing material and a retainer (7) that keeps the absorbing element on a drill bit shank (2). The retainer is a tubular part around the shank with a peripheral groove in a front surface facing a boring head (3). The absorbing element is embedded in the front surface and protrudes on-axis out of the groove.