CCMT 120408 dimensions
| Inscribed circle IC | 12.7 mm |
| Cutting edge length | 12.90 mm |
| Thickness s | 4.76 mm |
| Nose radius rε | 0.8 mm |
| Corner angle | 80° |
| Clearance angle | 7° |
| Tolerance M | IC ±0.08 · corner height ±0.13 · thickness ±0.13 mm |
| ANSI equivalent (inch) | CCMT 432 |
What CCMT 120408 tells you on the shop floor
80° corner: strong yet versatile, turns and faces with the same insert.
Positive insert (7°): lower cutting forces and less chatter. For finishing, boring, thin-walled parts and lighter machines.
Pressed, medium tolerance: economical, fine for roughing and where you do not need repeatability to a few hundredths of a mm at every insert change.
The most common radius: a balance between strength and finish.
Typical holders for CCMT
For a positive rhombic 80° insert the most common ISO 5608 holders are:
- SCLCR/L · lead angle 95°
- SCACR/L · lead angle 90°
The final R or L means right or left hand. Shank size, length and the exact clamping are in the manufacturer's catalogue.
Toolholders that take it
In inches, with the ANSI designation, the same insert is CCMT 432: size in eighths of an inch, thickness in sixteenths, radius in sixty-fourths. Converting any code, both ways, is in ISO Inserts Pro.
Other CCMT sizes
Same size, other version
Designation to ISO 1832; reference tables: Mitsubishi Materials turning catalogue (insert identification). Holders to ISO 5608. Chipbreaker, grade and cutting data differ between manufacturers: the catalogue of the insert you use is what counts.