TPKN inserts
60° triangular milling insert. We make 4 TPKN sizes, from TPKN1603PDTR to TPKN2204PDTR. Grade, coating and chipbreaker are matched to your material and operation.
What TPKN 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 |
| P | Clearance angle | 11° (positive insert) |
| K | Tolerance class | Class K |
| N | Hole and chipbreaker | No hole, no chipbreaker |
Where TPKN inserts are used
Triangular milling inserts are used in face milling and side-and-face milling cutters.
TPKN is a positive (11° clearance) 60° triangular milling insert. It has no hole and is held by a clamp or wedge. It has no chipbreaker (a flat top). The positive geometry keeps the cutting forces down.
Use the insert format, size and corner configuration specified by the cutter manufacturer; check the pocket and clamping system before ordering.
Questions
- What does TPKN mean?
- It is an ISO 1832 code. T = Shape: 60° triangular; P = Clearance angle: 11° (positive insert); K = Tolerance class: Class K; N = Hole and chipbreaker: No hole, no chipbreaker.
- Which TPKN sizes do you make?
- 4 sizes, from TPKN1603PDTR to TPKN2204PDTR. Grade, coating and chipbreaker are confirmed with each quotation.
- How do I read TPKN220420?
- TPKN = format; 22 = Cutting edge length code (about 22 mm); 20 = Corner (2.0 mm nominal).
Related formats
Guides: CNMG vs WNMG vs DNMG vs TNMG · ISO material groups · Inserts for stainless steel
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