CO-MAX Carbide End Mills for Copper and Aluminum
Solid carbide end mills for copper and aluminum machining: ball nose, 2/3-flute flat and 3-flute roughing types, D1.0–D20.0 mm.
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Product information
The CO-MAX copper & aluminum machining series (catalog L35–L40) mirrors the aluminum line for copper alloys: COB230 2-flute ball nose (D2.0–D12.0), COE345/COEL345 3-flute flat, COE255/COEL255 2-flute flat (D1.0–D20.0) and CORE327 3-flute roughing (D4.0–D20.0).
Specifications
| Cutter types | COB230 2-flute ball nose; COE345 / COEL345 3-flute flat (long-shank); COE255 / COEL255 2-flute flat (long-shank); CORE327 3-flute roughing |
|---|---|
| Diameter range | D2.0–D12.0 mm ball nose; D1.0–D20.0 mm flat; D4.0–D20.0 mm roughing |
| Intended materials | Copper and aluminum; work material tables mark copper electrode as best fit |
| Example stock models | COB230-060120-050-S06; COE345-080200-060-S08; CORE327-120300-075-S12 |
Available sizes
Model codes and dimensions reproduced from the Koves 2025 Solid Round Cutting Tools catalog. Stock items are listed in the catalog, not confirmed live — ask us for current availability.
CO-MAX Ball End Mill, 2-Flute, 30° helix
Catalog page 21 · 16 sizes · code COB230
| Model | Dia. (mm) | Ball radius (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|---|
| COB230-020040-050-S04 | 2.0 | 1.0 | 4 | 50 | 4 |
| COB230-030060-050-S04 | 3.0 | 1.5 | 6 | 50 | 4 |
| COB230-040080-050-S04 | 4.0 | 2.0 | 8 | 50 | 4 |
| COB230-040080-075-S04 | 4.0 | 2.0 | 8 | 75 | 4 |
| COB230-040080-050-S06 | 4.0 | 2.0 | 8 | 50 | 6 |
| COB230-050100-050-S06 | 5.0 | 2.5 | 10 | 50 | 6 |
| COB230-060120-050-S06 | 6.0 | 3.0 | 12 | 50 | 6 |
| COB230-060120-075-S06 | 6.0 | 3.0 | 12 | 75 | 6 |
| COB230-060120-100-S06 | 6.0 | 3.0 | 12 | 100 | 6 |
| COB230-080160-060-S08 | 8.0 | 4.0 | 16 | 60 | 8 |
| COB230-080160-075-S08 | 8.0 | 4.0 | 16 | 75 | 8 |
| COB230-080160-100-S08 | 8.0 | 4.0 | 16 | 100 | 8 |
| COB230-100200-075-S10 | 10 | 5.0 | 20 | 75 | 10 |
| COB230-100200-075-S10 | 10 | 5.0 | 20 | 100 | 10 |
| COB230-120240-075-S12 | 12 | 6.0 | 24 | 75 | 12 |
| COB230-120240-100-S12 | 12 | 6.0 | 24 | 100 | 12 |
CO-MAX Flat End Mill, 3-Flute, 45° helix
Catalog page 21 · 14 sizes · code COE345
| Model | Dia. (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|
| COE345-010030-050-S04 | 1 | 3 | 50 | 4 |
| COE345-015040-050-S04 | 1.5 | 4 | 50 | 4 |
| COE345-020060-050-S04 | 2 | 6 | 50 | 4 |
| COE345-025070-050-S04 | 2.5 | 7 | 50 | 4 |
| COE345-030090-050-S04 | 3 | 9 | 50 | 4 |
| COE345-040120-050-S04 | 4 | 12 | 50 | 4 |
| COE345-040120-050-S06 | 4 | 12 | 50 | 6 |
| COE345-050130-050-S06 | 5 | 13 | 50 | 6 |
| COE345-060150-050-S06 | 6 | 15 | 50 | 6 |
| COE345-080200-060-S08 | 8 | 20 | 60 | 8 |
| COE345-100250-075-S10 | 10 | 25 | 75 | 10 |
| COE345-120300-075-S12 | 12 | 30 | 75 | 12 |
| COE345-160450-100-S16 | 16 | 45 | 100 | 16 |
| COE345-200500-100-S20 | 20 | 50 | 100 | 20 |
Catalog page 22 · 9 sizes · code COEL345
| Model | Dia. (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|
| COEL345-030090-075-S04 | 3 | 9 | 75 | 4 |
| COEL345-040120-075-S04 | 4 | 12 | 75 | 4 |
| COEL345-050160-075-S06 | 5 | 16 | 75 | 6 |
| COEL345-060180-075-S06 | 6 | 18 | 75 | 6 |
| COEL345-060180-100-S06 | 6 | 18 | 100 | 6 |
| COEL345-080250-075-S08 | 8 | 25 | 75 | 8 |
| COEL345-080250-100-S08 | 8 | 25 | 100 | 8 |
| COEL345-100300-100-S10 | 10 | 30 | 100 | 10 |
| COEL345-120360-100-S12 | 12 | 36 | 100 | 12 |
CO-MAX Flat End Mill, 2-Flute, 55° helix
Catalog page 22 · 14 sizes · code COE255
| Model | Dia. (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|
| COE255-010030-050-S04 | 1 | 3 | 50 | 4 |
| COE255-015040-050-S04 | 1.5 | 4 | 50 | 4 |
| COE255-020060-050-S04 | 2 | 6 | 50 | 4 |
| COE255-025070-050-S04 | 2.5 | 7 | 50 | 4 |
| COE255-030090-050-S04 | 3 | 9 | 50 | 4 |
| COE255-040120-050-S04 | 4 | 12 | 50 | 4 |
| COE255-040120-050-S06 | 4 | 12 | 50 | 6 |
| COE255-050130-050-S06 | 5 | 13 | 50 | 6 |
| COE255-060150-050-S06 | 6 | 15 | 50 | 6 |
| COE255-080200-060-S08 | 8 | 20 | 60 | 8 |
| COE255-100250-075-S10 | 10 | 25 | 75 | 10 |
| COE255-120300-075-S12 | 12 | 30 | 75 | 12 |
| COE255-160450-100-S16 | 16 | 45 | 100 | 16 |
| COE255-200500-100-S20 | 20 | 50 | 100 | 20 |
Catalog page 23 · 9 sizes · code COEL255
| Model | Dia. (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|
| COEL255-030090-075-S04 | 3 | 9 | 75 | 4 |
| COEL255-040120-075-S04 | 4 | 12 | 75 | 4 |
| COEL255-050160-075-S06 | 5 | 16 | 75 | 6 |
| COEL255-060180-075-S06 | 6 | 18 | 75 | 6 |
| COEL255-060180-100-S06 | 6 | 18 | 100 | 6 |
| COEL255-080250-075-S08 | 8 | 25 | 75 | 8 |
| COEL255-080250-100-S08 | 8 | 25 | 100 | 8 |
| COEL255-100300-100-S10 | 10 | 30 | 100 | 10 |
| COEL255-120360-100-S12 | 12 | 36 | 100 | 12 |
CO-MAX Roughing End Mill, 3-Flute, 27° helix
Catalog page 23 · 7 sizes · code COR327
| Model | Dia. (mm) | Flute length (mm) | Overall length (mm) | Shank dia. (mm) |
|---|---|---|---|---|
| COR327-040120-050-S04 | 4 | 12 | 50 | 4 |
| COR327-060160-050-S06 | 6 | 16 | 50 | 6 |
| COR327-080200-060-S08 | 8 | 20 | 60 | 8 |
| COR327-100250-075-S10 | 10 | 25 | 75 | 10 |
| COR327-120300-075-S12 | 12 | 30 | 75 | 12 |
| COR327-160400-100-S16 | 16 | 40 | 100 | 16 |
| COR327-200450-100-S20 | 20 | 45 | 100 | 20 |
How to read the model number
The catalog page “Detailed explanation of the model” reads a code left to right as series, cutter type, length mark, flutes, helix angle, cutting diameter, corner radius, cutting length, overall length and shank diameter. The original diagram is reproduced here:
Source: source-excerpts/catalog-2025-pages-3-4-milling-contents-model-code.txt — Original PDF page 4