A hammer drill is a power tool that is specifically created to drill into hard materials like stone, concrete, brick, or mortar. A hammer drill is in many ways quite similar to a regular, more traditional power drill. As such, these shared similarities leave many users of power tools confused as to what is the actual difference between the two.
A regular, more traditional power drill uses high speed rotation alone in drilling holes. While a hammer drill also uses the same high speed rotation, it also utilizes non-stop, rapid successions of hammer-like blows to thrust its way into materials.
When using a hammer drill, you can imagine your drill bit spinning in high speed while rapidly and furiously punching up and down though the material that you are drilling into. This is exactly how a hammer drill operates; it’s also for the very same reason that many first-time hammer drill users describe the experience as if they’re holding a little jackhammer in their hands.
Most hammer drills basically come into two forms. There are dedicated hammer drills, commonly referred to rotary drills, which are specialty tools designed for those who engage in professional or serious masonry work. Then there are multi-purpose drills that feature a hammer-drill setting. These multi-purpose drills are usually more than capable for the working the occasional home improvement and DIY projects.