CNMG-EM carbide turning insert
CNMG-EM carbide turning insert
CNMG-DM carbide turning insert
CNMG-DR carbide turning insert for roughing
CNMG-EF carbide turning insert for finishing
CNMG-DF carbide turning insert for finishing
CNMG T-Max® P turning inserts feature 4 cutting edges and a neutral direction for both left and right hand cutting applications. Made with a hard carbide construction for greater rigidity and strength during machining. The CVD TICN+AL2O3+TIN coating helps reduce heat and wear prolonging the tool life.
CNMG T-Max® P turning inserts feature 4 cutting edges and a neutral direction for both left and right hand cutting applications. Made with a hard carbide construction for greater rigidity and strength during machining. The CVD TICN+AL2O3+TIN coating helps reduce heat and wear prolonging the tool life.
CNMG T-Max® P turning inserts feature 4 cutting edges and a neutral direction for both left and right hand cutting applications. Made with a hard carbide construction for greater rigidity and strength during machining. The CVD TICN+AL2O3+TIN coating helps reduce heat and wear prolonging the tool life.
CNMG Style Turning Inserts (Starke)
A CNMG turning insert is an ISO standardised turning insert with a double side, used in CNC lathes.
Here is the ISO breakdown for CNMG inserts:
C = Rhombic/diamond shape w/ 80° included angle
N = 0° relief/clearance angle (negative rake geometry)
M = Tolerance class (standard/medium)
G = Chipbreaker geometry + mounting hole
The numbers used after CNMG tell you the physical size of the insert.
There are two common systems used, metric & imperial, here's an example of each:
1. Metric (ISO) System - this system is most commonly used today!
Example: CNMG 120408
12 = Cutting edge length (in mm) → For C-shaped (80° diamond) inserts, this is the length of the side - It also roughly corresponds to the inscribed circle (IC) diameter in mm
04 = Thickness of the insert (in mm, but coded) - Common values: 03 = ~3.18 mm, 04 = ~4.76 mm, 05 = ~6.35 mm, etc
08 = Nose radius (corner radius) in tenths of a mm
08 = 0.8 mm
04 = 0.4 mm
12 = 1.2 mm
16 = 1.6 mm, etc.
So CNMG 120408 = 12 mm edge, ~4.76 mm thick, 0.8 mm nose radius.
2. Inch (ANSI) system
Example: CNMG 432
4 = Inscribed circle size in 1/8ths of an inch
4 = 4/8 = ½ inch (~12.7 mm) IC
3 = Thickness in 1/16ths of an inch
3 = 3/16 = 0.1875 inch (~4.76 mm)
2 = Nose radius in 1/64ths of an inch
2 = 2/64 = 1/32 inch (~0.8 mm)
CNMG 432 is essentially the same size as CNMG 120408.