Graphical Construction Glossary >> General Construction. >> Power Tools >> Rotary Hammer Drill

Rotary Hammer Drill

An electric tool for drilling larger holes in masonry and concrete. Many of them can also be used with a chisel tool. Also know as a masonry drill.

An old hammer drill that has done a lot of hard work over many years. The main reason for the long life of these type of tools is the fact that the gearbox sits in an oil bath, keeping it away from the inevitable dust that these machine generate.

The machine can have the hammer action turned off, and it can also be used as a chipping hammer (hammer but no rotation), but it as no reverse. When the drill jams (for example against rebar in concrete) then drill can easily be lifted off the tool by the quick release clamp. Then the tool is backed out of the hole using a Stilson or multigrip type wrench.

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