China Electric hand drill Suppliers
classification The editor A drill can be divided into three categories: hand
electric drill, impact drill, hammer drill. Minimum 1 hand electric drill:
power, use scope is limited to wood drilling and when an electric screwdriver,
part of the hand electric drill can according to the purposes to specialized
tools, use and model more 2. The impact drill, impact drill impact mechanism
have fangs and ball type two kinds Hand electric drill Hand electric drill .
Ball type impact electric drill by the moving plate, plate, steel ball, etc.
Dynamic plate through threads are connected to the spindle, with 12 steel ball;
Fixing use pin fixed on the chassis, with 4 ball, under the influence of thrust,
12 steel ball along the four steel ball rolling, the carbide drill rotating
impact movement, can on the brittle materials such as brick, block, concrete
drilling. Release pin, make the fixing servo plate rotation, no impact, to make
a general electric drill. 3. The hammer drill, electric hammer: can drill holes
on any of the material, the most widely use scope. The three electric drill
price from low to high alignment, function has said