INSERT SHAPE GUIDE
Match the insert
to the cut.
Start with the holder and required approach angle, then choose the strongest geometry that can reach the feature. Grade, chipbreaker and nose radius must still match the work material and finishing requirement.
ShapeGeometryTypical use
TNMG60° triangular negative insertGeneral external turning and facing with multiple usable edges.
CNMG80° diamond negative insertA strong general-purpose shape for roughing and production turning.
WNMG80° trigon negative insertSix cutting edges and good economy for general turning.
SNMGSquare negative insertStrong edge support for stable roughing and facing.
VNMG35° diamond negative insertBetter access for profiling, undercuts and finishing.
CCMT / CCGT80° positive insertLower cutting force for boring bars, smaller tools and non-ferrous finishing.