A hammer drill contains a cam like system that provides a thrust pulverizing motion to the bit being used. These thrusts are measured in what’s called BPM or blows per minute.
On average hammer drill blows per minute are around 3,000BPM. That’s a lot if I must say myself. So to really break down what a hammer drill has going on. Think of yourself using a normal drill.
Ok? then think of someone slapping the back of that drill or hammering on it toward the direction your drilling.
That’s the effect that’s happening at a rate of 30,000 BPM in that little tool. These blows per minute are in no means large but definitely powerful enough to help get you through tough materials you could be possibly working with.
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