Electric hammer is a widely used electric tool. On the basis of electric drill, electric hammer is to add a piston with crankshaft and connecting rod driven by electric motor, reciprocating compressed air in a cylinder, so that the air pressure in the cylinder changes periodically. The changing air pressure drives the hammer in the cylinder to repeatedly hit the top of the drill bit, which is equivalent to hitting the drill bit with a hammer. So it's called electric hammer.
Electric hammer is a kind of electric drill, which is mainly used to drill holes on concrete, floor, brick wall and stone. Professional drilling on the wall, concrete, stone, there are multi-functional electric hammer, adjust to the appropriate position with the appropriate drill can replace the ordinary electric drill, electric pick use.
Because the drill bit of the electric hammer has a rapid reciprocating motion (frequent impact) along the direction of the electric drill rod while it is rotating, it can drill holes in brittle cement concrete and stone materials quickly. The electric hammer can use the change-over switch to make the drill bit of the electric hammer in different working states, that is, it only rotates without impact, only impacts without rotation, both impacts and rotates.