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Solid carbide drills to remove jammed taps
BlueCut coated
<65 HRC
Operating instruction for Carbide Drills to remove jammed Taps:
The broken tap should not rise above the workpiece (it must be inside the drill hole)
- 1. Centering of the carbide drill by a multiple approaching on the broken tap - also on sloping faces
- 2. Starting the drilling process
- 3. In case of deep threads the chips has to be removed twice or three times
- 4. Chips has to be removed out of the drill hole ( for example by air pressure)
- 5. Any remaining chips should be taken out by a scriber point stray
- 6. Tapping the thread with a new tap
The tool life of the carbide drill to remove jammed taps is about 3 to 5 threads
Carbide drills to remove jammed taps will not be reground.
| for ø |
d1 |
I2 |
I1 |
d2 |
| M 3 |
2,5 |
10 |
38 |
3,0 |
| M 4 |
3,3 |
14 |
46 |
4,0 |
| M 5 |
4,2 |
19 |
50 |
5,0 |
| M 6 |
5,0 |
23 |
50 |
6,0 |
| M 8 |
6,8 |
23 |
60 |
7,0 |
| M 10 |
8,5 |
25 |
80 |
9,0 |
| M 12 |
10,2 |
35 |
80 |
11,0 |
Bench type or Column boring machine:
Lubrication: dry or wet
Revolution: 1000 - 2000 Rev./min
Feed: by hand
NC-machine:
Lubrication: wet
Revolution: 1400 - 2400 Rev./min
Feed: approx. 0,03-0,06 per revolution
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