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2. Hammer drill - Wikipedia

   en.wikipedia.org/wiki/Hammer_drill

   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.

3. Rotary hammer - Wikipedia

   en.wikipedia.org/wiki/Rotary_hammer

   A rotary hammer, also called rotary hammer drill [1] is a power tool that can perform heavy-duty tasks such as drilling and chiseling hard materials. [2] It is similar to a hammer drill in that it also pounds the drill bit in and out while it is spinning. However, rotary hammers use a piston mechanism instead of a special clutch.

4. Jackhammer - Wikipedia

   en.wikipedia.org/wiki/Jackhammer

   A jackhammer (pneumatic drill or demolition hammer in British English) is a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel. It was invented by William McReavy, who then sold the patent to Charles Brady King. [1] Hand-held jackhammers are generally powered by compressed air, but some are also powered by ...

5. Drill bit shank - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_shank

   The shortest SDS-plus masonry drill bits are about 110 mm overall length, and the longest 1500 mm. SDS-max is more common for larger rotary hammers and chipping guns, and common sizes start at 1 ⁄ 2 inch (13 mm) diameter up to 1 + 3 ⁄ 4 inches (44 mm) diameter. Standard lengths are 12 to 21 inches (300 to 530 mm).

6. Chuck (engineering) - Wikipedia

   en.wikipedia.org/wiki/Chuck_(engineering)

   Developed by Bosch in 1975 for hammer drills, the SDS System uses an SDS Shank which is a cylindrical shank with indentations to be held by the chuck. [3] A tool is inserted into the chuck, and is locked in place until the lock is released. The rotary force is transmitted through wedges that fit into two or three open grooves.

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