High-Performance Turning Insert for Demanding Tasks
The indexable insert VNMG...-PM RT250+ provides professional users with a versatile tool for steel machining. Thanks to its slender and acute 35° design, even difficult-to-reach areas on the workpiece can be machined reliably. The well-thought-out combination of a wear-resistant substrate and a practical chip breaker supports smooth chip evacuation, thereby promoting excellent surface finishes and overall efficiency in both single-part and batch production.
Suitable materials

Technical data
- Shape: VNMG (35° rhombic)
- Processing: Medium machining
- Cutting condition: Continuous and light interrupted cuts
- Workpiece Material: Steel
- Grade: RT250+ (CVD-coated 2-color P20-P30 carbide)
- Packaging unit: 10 pieces
Dimensions of Indexable insert - VNMG...-PM RT250+
|
Item Nr. |
r |
L |
I.C |
S |
d |
| VNMG 160404-PM RT250+ |
1661401 |
0,4 |
16,6 |
9,525 |
4,76 |
3,81 |
| VNMG 160408-PM RT250+ |
1661402 |
0,8 |
16,6 |
9,525 |
4,76 |
3,81 |
Cutting data
|
Stahl |
|
Vc (m/min) |
fn (mm/U) |
ap (mm) |
| VNMG 160404-PM RT250+ |
120-240 |
0,15-0,35 |
0,5-4 |
| VNMG 160408-PM RT250+ |
120-240 |
0,15-0,35 |
0,5-4 |
Applications
The VNMG design is exceptionally well-suited for profile, longitudinal, and contour turning tasks where outstanding accessibility is required. With its PM geometry, this turning plate excels in medium machining of steel components and proves to be a steadfast option even during light cutting interruptions.
Special features
The RT250+ grade features a two-color CVD coating that increases wear resistance in the P20-P30 range, creating a strong basis for reliable tool life. At the same time, the optimized chip breaker ensures controlled chip breakage, reducing process interruptions and contributing to highly economical lathe operations.