ONMU inserts
Octagonal milling insert. We make 3 ONMU sizes, from ONMU0705ANPN to ONMU090520. Grade, coating and chipbreaker are matched to your material and operation.
What ONMU 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 |
|---|---|---|
| O | Shape | Octagonal |
| N | Clearance angle | 0° (negative insert) |
| M | Tolerance class | Class M |
| U | Hole and chipbreaker | Hole countersunk on both sides, chipbreaker on both faces |
Where ONMU inserts are used
Octagonal milling inserts have eight corners per face and are used in face milling cutters.
ONMU is a negative octagonal milling insert. It has a countersunk hole for a clamping screw. 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.
Use the insert format, size and corner configuration specified by the cutter manufacturer; check the pocket and clamping system before ordering.
Questions
- What does ONMU mean?
- It is an ISO 1832 code. O = Shape: Octagonal; N = Clearance angle: 0° (negative insert); M = Tolerance class: Class M; U = Hole and chipbreaker: Hole countersunk on both sides, chipbreaker on both faces.
- Which ONMU sizes do you make?
- 3 sizes, from ONMU0705ANPN to ONMU090520. Grade, coating and chipbreaker are confirmed with each quotation.
- How do I read ONMU0705ANPN?
- ONMU = format; 07 = Cutting edge length code (about 7 mm); ANPN = Corner (milling corner and edge code ANPN).
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