Internal turning boring bars designation guide
| 1. | 2. | 3. | - | 4. | 5. | 6. | 7. | 8. | 9. | |
|---|---|---|---|---|---|---|---|---|---|---|
| Designation | Tool type | Shank diameter | Tool length | Clamping system | Insert shape | Tool style | Insert's clearance angle | Cutting direction | Cutting edge length | |
| Example | S | 20 | Q | - | M | C | L | N | R | 12 |
1. Tool type
S - solid steel shank
2. Shank diameter
3. Tool length
| Symbol | H | K | M | N | Q | R | S | T | U | V |
|---|---|---|---|---|---|---|---|---|---|---|
| Length [mm] | 100 | 125 | 150 | 160 | 180 | 200 | 250 | 300 | 350 | 400 |
4. Clamping system
5. Insert shape
6. Tool style
7. Insert's clearance angle
| Symbol | N | B | C | P |
|---|---|---|---|---|
| Clearance angle | 0° | 5° | 7° | 11° |
8. Cutting direction
9. Cutting edge length
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