CNMG 120412
ISO Designation: CNMG 120412
As a CNMG-series insert, CNMG 120412 carries an 80° rhombic negative cutting edge, sized per its ISO 1832 designation (120412).
CNMG inserts use an 80° rhombic (diamond) shape with a negative rake geometry, giving a strong cutting edge that suits medium-to-heavy roughing as well as general external turning on steel, stainless steel and cast-iron components. The negative-type, double-sided design gives two usable cutting edges per face, which keeps the effective cost per edge competitive for job shops and production lines running multiple shifts.
Per ISO 1832, the leading letters of this code indicate a 80° rhombic insert shape with a 0° (negative) relief angle; the remaining characters set the tolerance class, fixing style, size, thickness and corner radius.
- Category
- Turning Inserts
- Operation
- Turning
- Tool Type
- Indexable Turning Insert
- Insert Geometry
- 80° rhombic negative insert with two cutting edges per face (double-sided, four to eight edges total depending on the clamping style).
- Typical Applications
- External turning, Medium to heavy roughing, General-purpose profiling
- Suitable Workpiece Materials
- Steel, Stainless Steel, Cast Iron
Available / Typical Grades
Available specifications depend on brand and application. Contact us with your workpiece material, machining operation and existing tool specification, and we will confirm the closest equivalent grade and chip-breaker geometry available.