High-performance indexable insert for stainless steel
The TCMT...-MM RT255M indexable insert is a sophisticated solution for professional turning applications where stainless steel needs to be machined reliably. It impresses with a positive cutting geometry and the PVD-coated M20-M30 carbide, which provides it with dependable tool life in medium machining. Whether for continuous or light interrupted cuts, this TCMT insert creates excellent conditions for efficient workflows.
Suitable materials

Technical data
- Shape: TCMT
- Processing: Medium machining
- Cutting conditions: Continuous and light interrupted cut
- Application: Stainless steel
- Grade: RT255M (PVD-coated M20-M30 carbide)
- Packaging unit: 10 pieces
Dimensions of TCMT...-MM RT255M
|
Art. Nr. |
r |
L |
I.C |
S |
d |
| TCMT 16T304-MM RT255M |
1777361 |
0,4 |
16,5 |
9,525 |
3,97 |
4,4 |
| TCMT 16T308-MM RT255M |
1777362 |
0.8 |
16,5 |
9,525 |
3,97 |
4,4 |
Cutting data
|
Stainless Steel |
|
Vc (m/min) |
f (mm/rev.) |
ap (mm) |
| TCMT 16T304-MM RT255M |
100-200 |
0,08-0,25 |
0,25-3 |
| TCMT 16T308-MM RT255M |
100-200 |
0,1-0,3 |
0,5-3 |
Applications
This cutting insert is geared towards universal turning in mechanical engineering and stainless steel fabrication. It opens up flexible application possibilities in medium-duty cutting conditions. Typical applications include facing, longitudinal turning, and contour machining of stainless steel components.
Special features
The PVD coating of the RT255M grade, combined with the positive TCMT basic shape, promotes reduced cutting forces and even chip evacuation. This protects the workpiece and supports a smooth machining process. The M20-M30 substrate offers a robust core that brings thermal stability for demanding cutting tasks.