TNMG inserts
60° triangular turning insert. We make 15 TNMG sizes, from TNMG120412 to TNMG270624. Grade, coating and chipbreaker are matched to your material and operation.
What TNMG means
The first four letters of an ISO 1832 designation give the shape, the clearance angle, the tolerance class, and the hole and chipbreaker.
| Code | Feature | Meaning |
|---|---|---|
| T | Shape | 60° triangular |
| N | Clearance angle | 0° (negative insert) |
| M | Tolerance class | Class M |
| G | Hole and chipbreaker | Cylindrical hole, chipbreaker on both faces |
Where TNMG inserts are used
The 60° triangle has three corners per face and a long cutting edge for its size: a compromise between corner strength and access.
TNMG is a negative 60° triangular turning insert. It has a cylindrical hole. It has a chipbreaker on both faces. It can be turned over, so both faces are used: twice the corners of a one-sided insert. Negative inserts have a strong edge and are used from finishing to roughing on rigid machines.
Choose the size for your depth of cut, the corner radius for the feed and finish, and a holder made for TNMG inserts of that size.
Questions
- What does TNMG mean?
- It is an ISO 1832 code. T = Shape: 60° triangular; N = Clearance angle: 0° (negative insert); M = Tolerance class: Class M; G = Hole and chipbreaker: Cylindrical hole, chipbreaker on both faces.
- Which TNMG sizes do you make?
- 15 sizes, from TNMG120412 to TNMG270624. Grade, coating and chipbreaker are confirmed with each quotation.
- How do I read TNMG160408?
- TNMG = format; 16 = Cutting edge length code (about 16 mm); 04 = Thickness (4.76 mm); 08 = Corner (0.8 mm nominal).
Related formats
Guides: CNMG vs WNMG vs DNMG vs TNMG · ISO material groups · Inserts for stainless steel
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