High-performance Milling Insert APKT 07 for metalworking
The Milling Insert APKT 07 is specifically designed for demanding corner and shoulder milling. This indexable insert is characterised by its positive geometry, which promotes a smooth cut and stabilises the machining process. Professional users benefit from the two available grades, allowing targeted machining of different materials. While the RT250X version with its PVD multilayer coating provides excellent conditions for steel and stainless steel, the CVD-coated RT250K grade is optimally designed for cast iron materials.
Suitable materials

Technical data
- Insert shape: APKT
- RT250X grade: PVD multilayer coating, P10-P30 and M10-M30 carbide
- RT250K grade: CVD coating, K25 carbide
- Packaging unit: 10 pieces
Dimensions of Milling Insert APKT 07
| Item Designation |
Item Nr. |
L |
d |
s |
d1 |
r |
Scope of Application |
| APKT 070204-PF RT250X |
2651271 |
7,28 |
4,34 |
2,38 |
2 |
0,4 |
Steel & Stainless Steel |
| APKT 070204-PF RT250K |
2651272 |
7,28 |
4,34 |
2,38 |
2 |
0,4 |
Cast Iron |
Cutting data
|
Steel |
Stainless Steel |
Cast Iron |
|
Vc (m/min) |
fz (mm) |
Vc (m/min) |
fz (mm) |
Vc (m/min) |
fz (mm) |
| APKT 070204-PF RT250X |
110-260 |
0,07-0,15 |
100-150 |
0,05-0,12 |
- |
- |
| APKT 070204-PF RT250K |
- |
- |
- |
- |
120-320 |
0,1-0,3 |
Applications
Thanks to its precise 90° shape, this indexable insert opens up flexible application possibilities in shoulder, corner, and slot milling. The APKT 070204-PF RT250X variant is a proven choice for general milling operations in steel and stainless steel. For applications involving cast iron components, the RT250K grade supports efficient workflows in single-part and series production.
Special features
This milling insert excels with a carbide grade tailored to the respective material, promoting reliable process stability. The positive chipbreaker reduces the cutting forces generated, which has a gentle effect on the tool system and creates good prerequisites for a clean surface finish.