Corner Radius End Mills
A corner radius end mill has a rounded corner that is less prone to chipping than a sharp square corner and often lasts longer in hard or interrupted cuts. Use it when your part allows a small corner radius.
Titan Series
Ø3–12 mm · 10 sizes
Suitable for: Hardened steel.
Master Series
Ø3–12 mm · 10 sizes
Suitable for: Alloy steel; Pre-hardened steel; Hardened steel; Austenitic steel; High austenitic steel; Cast steel; Titanium alloys.
Series & standard sizes
| Series | Part No. | Dia. D (mm) | Radius R (mm) | LOC (mm) | OAL (mm) | Shank (mm) | Flutes | Coating | |
|---|---|---|---|---|---|---|---|---|---|
| Titan | H-nA4T030R05 | 3 | 0.5 | 8 | 50 | 4 | 4 | nACo | Calculate |
| Titan | H-nA4T040R05 | 4 | 0.5 | 11 | 50 | 4 | 4 | nACo | Calculate |
| Titan | H-nA4T060R05 | 6 | 0.5 | 15 | 50 | 6 | 4 | nACo | Calculate |
| Titan | H-nA4T060R10 | 6 | 1 | 15 | 50 | 6 | 4 | nACo | Calculate |
| Titan | H-nA4T080R05 | 8 | 0.5 | 18 | 60 | 8 | 4 | nACo | Calculate |
| Titan | H-nA4T080R10 | 8 | 1 | 18 | 60 | 8 | 4 | nACo | Calculate |
| Titan | H-nA4T100R05 | 10 | 0.5 | 22 | 75 | 10 | 4 | nACo | Calculate |
| Titan | H-nA4T100R10 | 10 | 1 | 22 | 75 | 10 | 4 | nACo | Calculate |
| Titan | H-nA4T120R05 | 12 | 0.5 | 26 | 80 | 12 | 4 | nACo | Calculate |
| Titan | H-nA4T120R10 | 12 | 1 | 26 | 80 | 12 | 4 | nACo | Calculate |
| Master | S-nA4T030R05 | 3 | 0.5 | 8 | 50 | — | 4 | nACo | Calculate |
| Master | S-nA4T040R05 | 4 | 0.5 | 11 | 50 | — | 4 | nACo | Calculate |
| Master | S-nA4T060R05 | 6 | 0.5 | 15 | 50 | — | 4 | nACo | Calculate |
| Master | S-nA4T060R10 | 6 | 1 | 15 | 50 | — | 4 | nACo | Calculate |
| Master | S-nA4T080R05 | 8 | 0.5 | 18 | 60 | — | 4 | nACo | Calculate |
| Master | S-nA4T080R10 | 8 | 1 | 18 | 60 | — | 4 | nACo | Calculate |
| Master | S-nA4T100R05 | 10 | 0.5 | 22 | 75 | — | 4 | nACo | Calculate |
| Master | S-nA4T100R10 | 10 | 1 | 22 | 75 | — | 4 | nACo | Calculate |
| Master | S-nA4T120R05 | 12 | 0.5 | 26 | 75 | — | 4 | nACo | Calculate |
| Master | S-nA4T120R10 | 12 | 1 | 26 | 75 | — | 4 | nACo | Calculate |
Custom corner radius end mills
Standard sizes don't fit? We grind special lengths, neck relief, chamfers or radii, non-standard diameters and coating selections to drawing. Custom tools from 7 days.
Upload drawing & request quoteQuality
Every tool is measured on Walter HELICHECK PRO equipment before dispatch. Inspection report available on request.
Made in our Shenzhen factory →Frequently asked questions
When should I use a corner radius end mill instead of a square one?
When the part allows a small radius in internal corners, the rounded corner improves edge strength and typically extends tool life.