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Carbide-Tipped Rotary Hammer Masonry Drill Bit Set. For heavy-duty applications that require the power of a rotary hammer drill, this set of Bosch bits is a great choice.
Masonry bits typically are used with a hammer drill, which hammers the bit into the material being drilled as it rotates; the hammering breaks up the masonry at the drill bit tip, and the rotating flutes carry away the dust. Rotating the bit also brings the cutting edges onto a fresh portion of the hole bottom with every hammer blow.
A corded hammer drill next to a drill bit and a chuck key A hammer drill , also known as a percussion drill or impact drill , is a power tool used chiefly for drilling in hard materials. [ 1 ] [ 2 ] It is a type of rotary drill with an impact mechanism that generates a hammering motion.
A standard hammer drill accepts 6 mm (1/4 inch) and 13 mm (1/2 inch) drill bits. The operator experiences considerable vibration, and the cams are generally made from hardened steel to avoid them wearing out quickly. In practice, drills are restricted to standard masonry bits up to 13 mm (1/2 inch) in diameter.
Rotary hammers have such force that the usual masonry drill bits are not adequate. Their smooth shanks would be pounded loose from the tool's chuck in a few seconds. Rotary hammers require special bits with an SDS shank (which can stand for Slotted Drive Shaft or Special Direct System), which locks into the rotary hammer without the need for a ...
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