What is the difference between centering drills for hand-held core drills and centering pins for magnetic core drills?
Question:
What is the difference between centering drills for hand-held core drills and centering pins for magnetic core drills?
Answer:
The centering drill bit of the hand-held core drilling machine has a drill tip and creates a classic centering hole.
The centering drill remains engaged until the drill bit has penetrated 2-3 mm deep into the material to be drilled and the drill bit can no longer be moved sideways. Only then does the centering drill retract, and after the drilling process is complete, it serves as an ejector for the drill core. In the magnetic core drilling machine, the centering pin is used to hit the center of the drill hole, and in addition, the centering pin releases the coolant flow from the coolant supply located inside the mounting shaft.
At the end of the drilling process, the centering pin also serves as an ejector for the drill core.