High-performance grooving insert MGMN ...-C RT300
The grooving insert MGMN ...-C RT300 is a well-thought-out solution for professional grooving operations that require a particularly stable cutting edge. Thanks to its special C-geometry, this insert performs reliably even under difficult machining conditions like interrupted cuts. The PVD-coated carbide grade RT300 (P15-P25 and M10-M25) opens up flexible application possibilities in modern machining and supports efficient workflows when turning steel and cast iron.
Suitable materials

Technical data
- Insert type: MGMN
- Grade: RT300 (PVD-coated P15-P25 / M10-M25)
- Grooving system: MGM./MRM. system
- Geometry: C (stable design)
- Packaging unit: 10 pieces
| Grooving Insert |
MGMN |
| Workpiece Materials |
Steel/Cast Iron
|
| Grade |
RT300: PVD-coated P15-P25 and M10-M25 for universal use in steel and stainless steel |
| Grooving system |
MGM./MRM.-System |
| Packaging unit |
10 Pc. |
Dimensions of grooving insert MGMN ...-C RT300
|
Item Nr. |
B |
R |
L |
S |
| MGMN 200-C RT300 |
1331123 |
2 |
0,2 |
16 |
3,5 |
| MGMN 300-C RT300 |
1331124 |
3 |
0,4 |
21 |
4,9 |
| MGMN 400-C RT300 |
1331133 |
4 |
0,4 |
21 |
4,9 |
| MGMN 500-C RT300 |
1331134 |
5 |
0,4 |
26 |
5,8 |
Cutting data
|
Steel |
Cast Iron |
|
Vc (m/min) |
fz (mm) |
Vc (m/min) |
f (mm) |
| MGMN C RT300 |
90-220 |
0,08-0,14 |
140-280 |
0,08-0,14 |
Applications
This carbide grooving insert is primarily designed for grooving operations in steel and cast iron materials. Thanks to the reinforced cutting edge geometry, it is highly suitable for demanding turning tasks where conventional edges might fracture. It is frequently applied when dealing with heavily interrupted cuts or irregular workpiece contours.
Special features
The standout feature of the MGMN ...-C version is the notably robust design of the cutting edge, which provides high process reliability under load. In combination with the wear-resistant PVD coating RT300, this indexable insert creates good conditions for dependable tool life and minimized tool changes in series production.