How to allocate the electric hammer drill
1, backward extrusion head, drill can be pulled out.2, black down, iron also press down, it came out.
There may be a problem that the pearl inside the chuck. The drill down, pressure head black chuck, a few more to return a bit range.
Electric hammer drill, is the "two function drill" and "hammer" handheld electric tool, "rotary cutting drill", with the impact of the impact mechanism of driving impact drill bit, drill driven in rotation at the same time, there is a direction perpendicular to the rotation of the rotary drill reciprocating hammer exercise. For concrete, brick, tile, marble and other materials drilling. "Hammer" to drive the impact force of drill rod, used for concrete, bricks and other materials on the slotting, holes or broken concrete etc..
