High Feed Milling Insert LNMX 0303-MU RT300/RT330
The high feed milling insert LNMX 0303-MU is specifically designed for professional machining operations with elevated feed rates. Thanks to its compact design, it can be used in milling cutters starting from a diameter of 16 mm. The soft-cutting geometry ensures low cutting forces and reduces the spindle load, allowing for an increased material removal rate even when used on low-power machines. With its double-sided design and four usable cutting edges, this milling insert provides an economical solution for demanding roughing applications.
Suitable materials

Technical data
- Designation: LNMX 0303-MU
- Processing: High Feed
- Application: Steel and Stainless Steel
- Grade RT300: PVD-coated P15-P25 and M10-M25 for universal use in steel and stainless steel
- Grade RT330: PVD-coated P15-P25 and M10-M25 with additional TiN-coating for improved wear-detection
- Packaging unit: 10 Pc.
Dimensions of High Feed Milling Insert - LNMX 0303-MU RT300/RT330
| |
Art. Nr. |
L |
apmax |
W |
S |
r |
| LNMX 0303-MU RT300 |
2301060 |
11,86 |
1,00 |
6 |
4,29 |
1,20 |
| LNMX 0303-MU RT330 New! |
2301061 |
11,86 |
1,00 |
6 |
4,29 |
1,20 |
Cutting data
|
Steel |
Stainless Steel |
|
Vc (m/min) |
fz (mm) |
Vc (m/min) |
fz (mm) |
| LNMX 0303-MU RT300 |
80-200 |
0,3-1,1 |
60-160 |
0,3-1,1 |
| LNMX 0303-MU RT330 |
80-200 |
0,3-1,1 |
60-160 |
0,3-1,1 |
Applications
The LNMX 0303-MU high feed milling insert is highly suitable for demanding milling operations in steel and stainless steel. It demonstrates its full potential during roughing processes where a maximum metal removal rate is required. Thanks to its compact shape, it is compatible with milling cutters from Ø 16 mm, offering excellent flexibility in mechanical engineering and mold making.
Special features
This indexable insert is available in two high-performance PVD-coated grades. The RT300 variant is optimally matched for universal applications, while the RT330 grade features an additional TiN coating that enables reliable wear detection. The four usable cutting edges, combined with the soft-cutting geometry, support a stable, highly efficient, and cost-effective machining process.