SPKN inserts
Square milling insert. We make 6 SPKN sizes, from SPKN1203EDSR to SPKN1504PDR. Grade, coating and chipbreaker are matched to your material and operation.
What SPKN 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 |
|---|---|---|
| S | Shape | Square |
| P | Clearance angle | 11° (positive insert) |
| K | Tolerance class | Class K |
| N | Hole and chipbreaker | No hole, no chipbreaker |
Where SPKN inserts are used
Square milling inserts are used mainly in face milling cutters.
SPKN is a positive (11° clearance) square 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 SPKN mean?
- It is an ISO 1832 code. S = Shape: Square; P = Clearance angle: 11° (positive insert); K = Tolerance class: Class K; N = Hole and chipbreaker: No hole, no chipbreaker.
- Which SPKN sizes do you make?
- 6 sizes, from SPKN1203EDSR to SPKN1504PDR. Grade, coating and chipbreaker are confirmed with each quotation.
- How do I read SPKN1203EDSR?
- SPKN = format; 12 = Cutting edge length code (about 12 mm); EDS = Corner (milling corner and edge code EDS).
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