Electric hammer is an electric rotary hammer drill with a safety clutch and a pneumatic hammer mechanism. The electric hammer utilizes the principle of piston motion to compress gas and impact the drill bit. It does not require much force from hand and can drill holes of 6-100mm on hard materials such as concrete, bricks, and stones. The electric hammer has a higher efficiency in drilling on these materials, but it cannot drill holes on metal. Electric hammers are suitable for drilling holes in hard building materials such as concrete and masonry. The electric hammer is powered by a single-phase series excited motor. Equipped with rotary impact, single rotation and single function, single rotation and single rotation impact are suitable for drilling on brittle materials such as concrete, rock, brick masonry, porcelain, etc. Single impact can be used to excavate and excavate trenches on concrete and brick walls. The shovel situation, electric hammer power, and processing ability are strong. The drilling diameter is usually between 12-50mm, and different working heads can be selected for various operations. Easy to operate, high drilling accuracy, electric hammers generally have overload protection devices, which can automatically slip when the mask is overloaded or the drill bit is stuck, without causing the motor to burn out. Hammers with a center size of 23mm or less are generally made into adjustable structures with hammer drills and only two rotating gears. Some small and medium-sized electric hammers have forward and reverse rotation functions. It can be used as an electric screwdriver. Larger electric hammers not only have hammer drilling power, but also some electric hammers are equipped with a gear that impacts but does not rotate. Equipped with the working head of the electric hammer, it can be used as an electric hammer