What is the power-driven hammer specifically used for chipping and drilling holes in masonry?

The hammer drill is specifically designed to chip and drill holes in masonry materials such as brick, concrete, and stone. This tool combines rotational motion with a hammering action, allowing it to break through tough surfaces more effectively than standard drills. The hammering mechanism provides a rapid succession of blows that help to pulverize the material as the drill bit rotates, making it efficient for creating holes in hard substrates common in masonry work.

The hammer drill is widely used in construction and masonry because it can penetrate hard materials without damaging the drill bit or the tool itself. Its design often includes settings that allow the user to switch between standard drilling and hammer drilling, offering versatility for different tasks.

Other tools listed, like the impact driver, are not specifically designed for masonry; they are better suited for driving screws and fastening applications. The rotary hammer also serves a similar function to the hammer drill but is typically more powerful and better suited for larger holes or more difficult materials. Pneumatic hammers, on the other hand, use compressed air for hammering and are generally used for chiseling and breaking apart materials rather than drilling holes.