INDEXABLE INSERTS
ONMU Milling Inserts
Compare ONMU parent models by material and application before choosing a brand.
No matching parent models.
This is our ONMU range: 1 sizes, 5 variants, Achteck. The geometry is an octagonal milling geometry giving eight edges per insert. Applications published for the family cover Steel, Stainless steel, Cast iron, Heat-resistant alloys.
Sizes in this family
Every ONMU size we carry, with the measured geometry and how many variants are in stock. Open a size for the full cutting data and grade list.
| Size | IC (mm) | Thickness (mm) | Nose radius (mm) | Variants | Material groups |
|---|---|---|---|---|---|
| ONMU 050408 | 12.7 | 4.76 | 0.8 | 5 | P, M, K, S |
Grades stocked in this family
AC151K, AC301K, AP251K, AP251U, AP351U.
The family is published for Steel, Stainless steel, Cast iron, Heat-resistant alloys. Pick the grade from the group you are cutting — how to read grade names.
Chipbreaker geometries
MM4. The chipbreaker defines the feed window — chipbreaker selection guide.
Typical operations
- Face Milling
Which size do you need?
- Inscribed circle sets the maximum depth of cut. As a rule keep ap under about two thirds of the IC.
- Nose radius trades finish against strength. A larger radius gives better surface finish at the same feed and a stronger edge, but raises cutting force and cannot produce tight internal corners.
- Check the holder. The holder designation must carry the same shape letter and the same size digit as the insert.