Cobalt Ball End Mills

Cobalt Ball End Mills

2 Flute - Fractional
2 Flute - Fractional
4 & 6 Flute - Fractional
4 & 6 Flute - Fractional

Cobalt ball end mills carry a fully rounded tip rather than a flat one, so the cutting edge follows a curve instead of leaving a flat floor and a sharp corner. That makes them the tool for 3D contouring, die and mold work, and any surface that is not flat. Stocked in 2 flute and 4 and 6 flute fractional ranges, uncoated or in TiALN, TiCN and TiN.

Ball End vs. Square End: Use a ball end when the finished surface is curved, filleted or three-dimensional. For flat floors, slots and square shoulders, the cobalt square end range is the correct choice.

Flute Count: The 2 flute range clears chips more freely and is the better choice for deeper contour passes and roughing in softer alloys. The 4 and 6 flute range leaves a finer scallop between passes, which suits finishing work and harder materials.

Helix Angle: The 2 flute range is stocked at both 30° and 40° helix — the higher angle shears more gradually for a smoother finish, the lower angle is more rigid under load. The 4 and 6 flute range is 30° throughout.

Why Cobalt: Cobalt holds its edge at higher temperatures than plain high speed steel, so these tools tolerate faster speeds and tougher materials — stainless, titanium and hardened alloys. They remain tougher and less prone to chipping than carbide, which makes them a safer choice in interrupted cuts, older machines, or setups that are not perfectly rigid.

  • Compare SKU Vendor Size (D1) Shank Diameter (D2) Flute Length (L2) Reach (L3) Overall Length (L1) Length Type Corner Radius (R) Included Angle Taper Angle Helix Angle Number of Flutes Weldon Flats Flats Coating In Stock Price Quantity
    A64805 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 Uncoated Available to Order*
    $23.46
  • A64781 HTC Tool 1/8 3/8 3/8 2-5/16 30° 2 Uncoated Available to Order*
    $17.16
  • A64808 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 TiN Available to Order*
    $26.76
  • A64782 HTC Tool 1/8 3/8 3/8 2-5/16 30° 2 TiCN Available to Order*
    $22.13
  • A64806 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 TiCN Available to Order*
    $28.42
  • A64783 HTC Tool 1/8 3/8 3/8 2-5/16 30° 2 TiALN Available to Order*
    $22.96
  • A76788 ACT 1/8 1/8 3/8 2-5/16 30° 4 ALTiN 24
    $37.52
  • A64784 HTC Tool 1/8 3/8 3/8 2-5/16 30° 2 TiN Available to Order*
    $20.46
  • A66204 HTC Tool 3/16 3/8 7/16 2-5/16 30° 2 Uncoated Available to Order*
    $17.16
  • A64807 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 TiALN Available to Order*
    $29.24
  • A66228 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 Uncoated Available to Order*
    $23.46
  • A66205 HTC Tool 3/16 3/8 7/16 2-5/16 30° 2 TiCN Available to Order*
    $22.13
  • A66231 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiN Available to Order*
    $26.76
  • A66206 HTC Tool 3/16 3/8 7/16 2-5/16 30° 2 TiALN Available to Order*
    $22.96
  • A66229 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiCN Available to Order*
    $28.42
  • A66207 HTC Tool 3/16 3/8 7/16 2-5/16 30° 2 TiN Available to Order*
    $20.46
  • A66230 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiALN Available to Order*
    $29.24
  • A64333 HTC Tool 1/4 3/8 1/2 2-5/16 30° 2 Uncoated Available to Order*
    $16.35
  • A64353 HTC Tool 1/4 3/8 5/8 2-7/16 30° 4 Uncoated Available to Order*
    $23.46
  • A64334 HTC Tool 1/4 3/8 1/2 2-5/16 30° 2 TiCN Available to Order*
    $21.33
  • A64356 HTC Tool 1/4 3/8 5/8 2-7/16 30° 4 TiN Available to Order*
    $26.76
  • A64335 HTC Tool 1/4 3/8 1/2 2-5/16 30° 2 TiALN Available to Order*
    $22.14
  • A64354 HTC Tool 1/4 3/8 5/8 2-7/16 30° 4 TiCN Available to Order*
    $28.42
  • A64336 HTC Tool 1/4 3/8 1/2 2-5/16 30° 2 TiN Available to Order*
    $19.67
  • A64355 HTC Tool 1/4 3/8 5/8 2-7/16 30° 4 TiALN Available to Order*
    $29.24
  • A64337 HTC Tool 1/4 3/8 5/8 2-7/16 30° 2 Uncoated Available to Order*
    $18.03
  • A76789 ACT 1/4 1/4 3/4 2-9/16 30° 4 ALTiN 23
    $43.21
  • A64338 HTC Tool 1/4 3/8 5/8 2-7/16 30° 2 TiCN Available to Order*
    $23.01
  • A66915 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 Uncoated Available to Order*
    $23.46
  • A64339 HTC Tool 1/4 3/8 5/8 2-7/16 30° 2 TiALN Available to Order*
    $23.85
  • A66918 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 TiN Available to Order*
    $26.76
  • A64340 HTC Tool 1/4 3/8 5/8 2-7/16 30° 2 TiN Available to Order*
    $21.35
  • A66916 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 TiCN Available to Order*
    $28.42
  • A64341 HTC Tool 1/4 1/4 1/2 4 40° 2 Uncoated Available to Order*
    $47.58
  • A66917 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 TiALN Available to Order*
    $29.24
  • A64342 HTC Tool 1/4 1/4 1/2 4 40° 2 TiCN Available to Order*
    $54.30
  • A76790 ACT 5/16 5/16 1 2-3/4 30° 4 ALTiN 16
    $43.21
  • A64343 HTC Tool 1/4 1/4 1/2 4 40° 2 TiALN Available to Order*
    $55.41
  • A65832 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 Uncoated Available to Order*
    $26.50
  • A64344 HTC Tool 1/4 1/4 1/2 4 40° 2 TiN Available to Order*
    $52.04
  • A66895 HTC Tool 5/16 3/8 9/16 2-5/16 30° 2 Uncoated Available to Order*
    $16.24
  • A65835 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 TiN Available to Order*
    $29.82
  • A66896 HTC Tool 5/16 3/8 9/16 2-5/16 30° 2 TiCN Available to Order*
    $21.23
  • A65833 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 TiCN Available to Order*
    $31.48
  • A66897 HTC Tool 5/16 3/8 9/16 2-5/16 30° 2 TiALN Available to Order*
    $22.06
  • A65834 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 TiALN Available to Order*
    $32.31
  • A76791 ACT 3/8 3/8 1 2-3/4 30° 4 ALTiN 56
    $43.21
  • A66898 HTC Tool 5/16 3/8 9/16 2-5/16 30° 2 TiN Available to Order*
    $19.56
  • A67425 HTC Tool 7/16 3/8 1 2-11/16 30° 4 Uncoated Available to Order*
    $34.73
  • A66899 HTC Tool 5/16 3/8 3/4 2-1/2 30° 2 Uncoated Available to Order*
    $17.77
  • A67428 HTC Tool 7/16 3/8 1 2-11/16 30° 4 TiN Available to Order*
    $38.45
  • A66900 HTC Tool 5/16 3/8 3/4 2-1/2 30° 2 TiCN Available to Order*
    $22.74
  • A67426 HTC Tool 7/16 3/8 1 2-11/16 30° 4 TiCN Available to Order*
    $40.31
  • A66901 HTC Tool 5/16 3/8 3/4 2-1/2 30° 2 TiALN Available to Order*
    $23.56
  • A67427 HTC Tool 7/16 3/8 1 2-11/16 30° 4 TiALN Available to Order*
    $41.23
  • A66902 HTC Tool 5/16 3/8 3/4 2-1/2 30° 2 TiN Available to Order*
    $21.07
  • A76792 ACT 1/2 1/2 1 2-11/16 30° 4 ALTiN 28
    $57.02
  • A66903 HTC Tool 5/16 1/4 1/2 4 40° 2 Uncoated Available to Order*
    $48.55
  • A66904 HTC Tool 5/16 1/4 1/2 4 40° 2 TiCN Available to Order*
    $55.26
  • A63853 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 Uncoated Available to Order*
    $31.37
  • A66905 HTC Tool 5/16 1/4 1/2 4 40° 2 TiALN Available to Order*
    $56.40
  • A63856 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 TiN Available to Order*
    $35.41
  • A66906 HTC Tool 5/16 1/4 1/2 4 40° 2 TiN Available to Order*
    $53.04
  • A63854 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 TiCN Available to Order*
    $37.44
  • A76793 ACT 1/2 1/2 1-1/4 3-1/4 30° 4 ALTiN 28
    $63.71
  • A65812 HTC Tool 3/8 3/8 9/16 2-5/16 30° 2 Uncoated Available to Order*
    $16.35
  • A65813 HTC Tool 3/8 3/8 9/16 2-5/16 30° 2 TiCN Available to Order*
    $21.33
  • A63855 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 TiALN Available to Order*
    $38.43
  • A66583 HTC Tool 5/8 5/8 1-5/8 3-3/4 30° 4 Uncoated Available to Order*
    $45.93
  • A65814 HTC Tool 3/8 3/8 9/16 2-5/16 30° 2 TiALN Available to Order*
    $22.14
  • A66586 HTC Tool 5/8 5/8 1-5/8 3-3/4 30° 4 TiN Available to Order*
    $51.89
  • A65815 HTC Tool 3/8 3/8 9/16 2-5/16 30° 2 TiN Available to Order*
    $19.67
  • A66584 HTC Tool 5/8 5/8 1-5/8 3-3/4 30° 4 TiCN Available to Order*
    $54.87
  • A65816 HTC Tool 3/8 3/8 3/4 2-1/2 30° 2 Uncoated Available to Order*
    $17.77
  • A66585 HTC Tool 5/8 5/8 1-5/8 3-3/4 30° 4 TiALN Available to Order*
    $56.35
  • A65817 HTC Tool 3/8 3/8 3/4 2-1/2 30° 2 TiCN Available to Order*
    $22.74
  • A65818 HTC Tool 3/8 3/8 3/4 2-1/2 30° 2 TiALN Available to Order*
    $23.56
  • A65308 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 Uncoated Available to Order*
    $54.84
  • A65819 HTC Tool 3/8 3/8 3/4 2-1/2 30° 2 TiN Available to Order*
    $21.07
  • A65309 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 6 Uncoated Available to Order*
    $54.84
  • A65820 HTC Tool 3/8 3/8 3/4 5 40° 2 Uncoated Available to Order*
    $49.55
  • A65312 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 6 TiN Available to Order*
    $63.77
  • A65821 HTC Tool 3/8 3/8 3/4 5 40° 2 TiCN Available to Order*
    $60.49
  • A65315 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 TiN Available to Order*
    $63.77
  • A65822 HTC Tool 3/8 3/8 3/4 5 40° 2 TiALN Available to Order*
    $62.32
  • A65310 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 6 TiCN Available to Order*
    $68.21
  • A65823 HTC Tool 3/8 3/8 3/4 5 40° 2 TiN Available to Order*
    $56.85
  • A65313 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 TiCN Available to Order*
    $68.21
  • A76794 ACT 3/4 3/4 1-5/8 3-7/8 30° 4 ALTiN 36
    $95.24
  • A67414 HTC Tool 7/16 3/8 3/4 5 40° 2 Uncoated Available to Order*
    $57.11
  • A65311 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 6 TiALN Available to Order*
    $70.42
  • A60328 HTC Tool 7/16 3/8 3/4 5 40° 2 Uncoated Available to Order*
    $68.05
  • A67415 HTC Tool 7/16 3/8 3/4 5 40° 2 TiCN Available to Order*
    $69.90
  • A65314 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 TiALN Available to Order*
    $70.42
  • A67416 HTC Tool 7/16 3/8 3/4 5 40° 2 TiALN Available to Order*
    $64.42
  • A60645 HTC Tool 1 1 2 4-1/2 30° 4 Uncoated Available to Order*
    $89.62
  • A63837 HTC Tool 1/2 1/2 1 3 30° 2 Uncoated Available to Order*
    $23.66
  • A60646 HTC Tool 1 1 2 4-1/2 30° 6 Uncoated Available to Order*
    $89.62
  • A63838 HTC Tool 1/2 1/2 1 3 30° 2 TiCN Available to Order*
    $29.69
  • A60649 HTC Tool 1 1 2 4-1/2 30° 6 TiN Available to Order*
    $102.08

* Lead times can vary from 1–10 business days. Call (908) 98-ATLAS or email sales@atlascuttingtools.com for details.

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