High-Performance Turning Insert for Cast Iron Machining
With the indexable insert - TNMG...-KC RT150K, professional users receive a well-thought-out and highly productive cutting tool. The combination of a resilient negative cutting edge geometry and the specialized RT150K carbide grade makes this insert an excellent choice for demanding turning operations in cast iron. Thanks to the multi-layer CVD coating and the robust chipbreaker, reliable chip formation is promoted, achieving stable results in both continuous and heavily interrupted machining processes.
Suitable materials

Technical data
- Shape: TNMG
- Processing: Medium machining
- Cutting conditions: Continuous, light and heavy interrupted
- Workpiece Material: Cast Iron
- Grade: RT150K (CVD-coated K10-K20 carbide)
- Packaging unit: 10 Pc.
Dimensions of Indexable insert - TNMG...-KC RT150K
| |
Item Nr. |
r |
L |
I.C |
S |
d |
| TNMG 160404-KC RT150K |
1661441 |
0,4 |
16,5 |
9,525 |
4,76 |
3,81 |
| TNMG 160408-KC RT150K |
1661442 |
0,8 |
16,5 |
9,525 |
4,76 |
3,81 |
| TNMG 160412-KC RT150K |
1661443 |
1,2 |
16,5 |
9,525 |
4,76 |
3,81 |
Cutting data
|
Cast Iron |
|
Vc (m/min) |
fn (mm/U) |
ap (mm) |
| TNMG 160404-KC RT150K |
200-400 |
0,2 -0,4 |
1-5 |
| TNMG 160408-KC RT150K |
200-400 |
0,2 -0,4 |
1-5 |
| TNMG 160412-KC RT150K |
200-400 |
0,2 -0,4 |
1-5 |
Applications
The TNMG insert is specifically tailored for the medium machining of cast iron. It offers a practical solution for standard longitudinal, facing, and profiling turning tasks. Due to the high toughness of the substrate, the tool easily masters demanding conditions such as heavily interrupted cuts, while providing consistent process reliability in industrial environments.
Special features
The CVD-coated K10-K20 carbide of the RT150K grade convinces with exceptional thermal resilience and wear resistance. The triangular negative shape provides a total of six usable cutting edges, leading to a significant reduction in tooling costs. The integrated chipformer contributes to efficient chip evacuation and preserves the cutting material.