SCMT 09T308 dimensions
| Inscribed circle IC | 9.525 mm |
| Cutting edge length | 9.53 mm |
| Thickness s | 3.97 mm |
| Nose radius rε | 0.8 mm |
| Corner angle | 90° |
| Clearance angle | 7° |
| Tolerance M | IC ±0.05 · corner height ±0.08 · thickness ±0.13 mm |
| ANSI equivalent (inch) | SCMT 32.52 |
What SCMT 09T308 tells you on the shop floor
90° corner: the strongest edge, takes large chip loads. Ideal for roughing.
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 SCMT
For a positive square 90° insert the most common ISO 5608 holders are:
- SSBCR/L · lead angle 75°
- SSSCR/L · lead angle 45°
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 SCMT 32.52: size in eighths of an inch, thickness in sixteenths, radius in sixty-fourths. Converting any code, both ways, is in ISO Inserts Pro.
Other SCMT sizes
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.