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2. Jackhammer - Wikipedia

   en.wikipedia.org/wiki/Jackhammer

   The connection end size is also related to the breaking energy of the tool. For example, the Bosch and Hilti 12 lb (5.4 kg) tools both use SDS-max, while the Bosch, Hilti, and Makita 65 lb (29 kg) tools all use 1+1/8 in hex connection. See hammer drills for more on electropneumatic hammering.

3. Rotary hammer - Wikipedia

   en.wikipedia.org/wiki/Rotary_hammer

   Modern units allow the hammer and rotation functions to be used separately or in combination, i.e., hammer mode, drill mode, or both. When used in the hammer mode, the tool provides a drilling function similar to a jackhammer. [4] Rotary hammer drills have an oil filled gearbox, which allows them to operate durably despite the large forces and ...

4. Down-the-hole drill - Wikipedia

   en.wikipedia.org/wiki/Down-The-Hole_Drill

   DTH drill tool operated with drilling mud (Drillstar MUDHammer) A down-the-hole drill, usually called DTH by most professionals, is basically a jackhammer screwed on the bottom of a drill string. The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or drilling mud). The DTH hammer is one ...

5. Hilti - Wikipedia

   en.wikipedia.org/wiki/Hilti

   In 1967 the company introduced the TE17, a fully electropneumatic rotary hammer drill which featured a safety clutch, and it was shipped to customers in Hilti's first distinctive red toolbox. The global expansion continued throughout the 1960s and by 1971, Hilti's global turnover was 376 million Swiss francs across 45 countries, including new ...

6. Milwaukee Tool - Wikipedia

   en.wikipedia.org/wiki/Milwaukee_Tool

   By 1935, Milwaukee Electric Tool Corporation developed a lightweight 3/4" electric hammer drill. This power tool was designed to drill and sink anchors into concrete. This drill could also be converted into a standard 3/4" drill. Milwaukee also designed an easy-to-handle, single-horsepower sander/grinder that weighed only 15 pounds. [7]