As the drill bit of the electric hammer rotates, it also produces rapid reciprocating movement (frequent impact) along the direction of the electric drill rod, so it can quickly drill holes on brittle cement concrete, stone and other materials. High grade electric hammers can use the change-over switch to make the drill bit of the electric hammer in different working states, that is, only rotating without impact, only impacting without rotation, both impacting and rotating.

During the electric hammer operation, master the electric drill or the handle of the electric hammer. When drilling, first put the drill against the working surface of the special-shaped rivet, and then start it with moderate force to avoid shaking; If the speed drops sharply, the force shall be reduced to prevent the motor from overloading. It is prohibited to use a wooden shoulder to pressurize. When drilling, pay attention to avoid the reinforcement in the concrete.