► Sutton Tools | Endmills Roughing Cobalt

Cobalt Roughers Built for Tough Metal Removal When the job calls for serious stock removal, Sutton Tools’ Cobalt Roughing Endmills get it done fast. Designed for heavy-duty machining, these cutters bite through alloy, stainless & structural steel with controlled aggression. Made from HSS-Co8 (High-Speed Steel with 8% Cobalt), each endmill...

Cobalt Roughers Built for Tough Metal Removal

When the job calls for serious stock removal, Sutton Tools’ Cobalt Roughing Endmills get it done fast. Designed for heavy-duty machining, these cutters bite through alloy, stainless & structural steel with controlled aggression. Made from HSS-Co8 (High-Speed Steel with 8% Cobalt), each endmill delivers heat resistance, strength & extended wear life for demanding trade environments.

The roughing profile produces coarse chips that clear easily, reducing load & preventing chatter during deep cuts. Whether you’re machining frames, tool steel or large components, these endmills deliver consistent surface quality & dimensional control. Many machinists pair them with Tool Holders & Collets for rigid setup stability or use Cutting Fluids & Coolants to maximize tool life under high feed rates. For prepping material & hole entry, Drill Accessories ensure clean starts, while Same-Day Dispatch from Industrial Shed keeps your workflow running on time.

Professionals who value repeat accuracy also rely on Measuring & Inspection Tools to confirm dimensions after every roughing pass.

What’s in This Collection:

► E/Mill E142 12 mm Regular 4 Flute R30 NR JIS HSS-Co8
‣ General-purpose rougher offering smooth chip flow & strong edge retention.

► E/Mill E205 25 mm Long 5 Flute R30 NF DIN844L-B HSS-Co8
‣ Long-reach cobalt rougher built for deep cavity milling & structural work.

► E/Mill E205 20 mm Long 4 Flute R30 NF DIN844L-B HSS-Co8
‣ High-performance cutter for extended slotting & contouring.

► E/Mill E205 18 mm Long 4 Flute R30 NF DIN844L-B HSS-Co8
‣ Durable long-series endmill for medium-depth roughing in steel & cast materials.

► E/Mill E201 30 mm Regular 6 Flute R30 NF DIN844K-B HSS-Co8
‣ Multi-flute rougher offering smoother feed at higher metal removal rates.

► E/Mill E201 16 mm Regular 4 Flute R30 NF DIN844K-B HSS-Co8
‣ Versatile cobalt endmill for toolroom & production use.

► E/Mill E201 6 mm Regular 3 Flute R30 NF DIN844K-B HSS-Co8
‣ Compact cutter ideal for precision cavity roughing & light fabrication.

► E/Mill E201 12 mm Regular 4 Flute R30 NF DIN844K-B HSS-Co8
‣ Shop-standard endmill providing clean roughing in various steels.

► E/Mill E144 25 mm Regular 5 Flute R30 NR JIS HSS-Co8
‣ Balanced 5-flute design for reduced vibration & consistent chip evacuation.

 

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  • Sutton Tools - 12mm Long E/Mill E146 4 Flute R30 Nr DIN844L-A HSS-Co.8 | E1461200
    Sutton Tools - 12mm Long E/Mill E146 4 Flute R30 Nr DIN844L-A HSS-Co.8 | E1461200
    Sutton Tools - 12mm Long E/Mill E146 4 Flute R30 Nr DIN844L-A HSS-Co.8 | E1461200This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would...
    $86.66
    $136.86
    $86.66
  • Sutton Tools - 10mm Long E/Mill E146 4 Flute R30 Nr DIN844L-A HSS-Co.8 | E1461000
    Sutton Tools - 10mm Long E/Mill E146 4 Flute R30 Nr DIN844L-A HSS-Co.8 | E1461000
    Sutton Tools - 10mm Long E/Mill E146 4 Flute R30 Nr DIN844L-A HSS-Co.8 | E1461000This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would...
    $73.99
    $114.11
    $73.99
  • Sutton Tools - 8mm Long E/Mill E146 3 Flute R30 Nr DIN844L-A HSS-Co.8 | E1460800
    Sutton Tools - 8mm Long E/Mill E146 3 Flute R30 Nr DIN844L-A HSS-Co.8 | E1460800
    Sutton Tools - 8mm Long E/Mill E146 3 Flute R30 Nr DIN844L-A HSS-Co.8 | E1460800This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would...
    $69.73
    $107.54
    $69.73
  • Sutton Tools - 6mm Long E/Mill E146 3 Flute R30 Nr DIN844L-A HSS-Co.8 | E1460600
    Sutton Tools - 6mm Long E/Mill E146 3 Flute R30 Nr DIN844L-A HSS-Co.8 | E1460600
    Sutton Tools - 6mm Long E/Mill E146 3 Flute R30 Nr DIN844L-A HSS-Co.8 | E1460600This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would...
    $55.73
    $88.00
    $55.73
  • Sutton Tools - 1-1/2" Long E/Mill E146 6 Flute R30 Nr HSS-Co.8 | E1463810
    Sutton Tools - 1-1/2" Long E/Mill E146 6 Flute R30 Nr HSS-Co.8 | E1463810
    Sutton Tools - 1-1/2" Long E/Mill E146 6 Flute R30 Nr HSS-Co.8 | E1463810This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would dull....
    $632.60
    $999.05
    $632.60
  • Sutton Tools - 1-1/4" Long E/Mill E146 6 Flute R30 Nr HSS-Co.8 | E1463175
    Sutton Tools - 1-1/4" Long E/Mill E146 6 Flute R30 Nr HSS-Co.8 | E1463175
    Sutton Tools - 1-1/4" Long E/Mill E146 6 Flute R30 Nr HSS-Co.8 | E1463175This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would dull....
    $485.80
    $767.21
    $485.80
  • Sutton Tools - E/Mill E146 1" Long 5 Flute R30 Nr HSS-Co.8 | E1462540
    Sutton Tools - E/Mill E146 1" Long 5 Flute R30 Nr HSS-Co.8 | E1462540
    Sutton Tools - E/Mill E146 1" Long 5 Flute R30 Nr HSS-Co.8 | E1462540This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would dull....
    $321.95
    $508.44
    $321.95
  • Sutton Tools - 3/4" Long E/Mill E146 4 Flute R30 Nr HSS-Co.8 | E1461905
    Sutton Tools - 3/4" Long E/Mill E146 4 Flute R30 Nr HSS-Co.8 | E1461905
    Sutton Tools - 3/4" Long E/Mill E146 4 Flute R30 Nr HSS-Co.8 | E1461905This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would dull....
    $177.48
    $280.29
    $177.48
  • Sutton Tools - 5/8" Long E/Mill E146 4 Flute R30 Nr HSS-Co.8 | E1461588
    Sutton Tools - 5/8" Long E/Mill E146 4 Flute R30 Nr HSS-Co.8 | E1461588
    Sutton Tools - 5/8" Long E/Mill E146 4 Flute R30 Nr HSS-Co.8 | E1461588This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would dull....
    $132.08
    $208.61
    $132.08
  • Sutton Tools - 1/2" Long E/Mill E146 4 Flute R30 Nr HSS-Co.8 | E1461270
    Sutton Tools - 1/2" Long E/Mill E146 4 Flute R30 Nr HSS-Co.8 | E1461270
    Sutton Tools - 1/2" Long E/Mill E146 4 Flute R30 Nr HSS-Co.8 | E1461270This Sutton cobalt drill bit is made from cobalt-alloyed HSS for superior heat and wear resistance — built to drill hard, abrasive materials like stainless steel where standard HSS would dull....
    $86.66
    $136.86
    $86.66

Made for Machinists Who Push Hard & Cut Clean

Every Sutton Cobalt Rougher is precision-ground for efficient chip breaking & balanced performance under heavy load. The unique flute geometry reduces chatter, allowing deeper cuts with consistent finish quality. For fabrication workflows, pair these with Cutting & Grinding Tools to prep edges between milling stages or Tool Storage & Workbenches to keep your cutters protected & organized.

Professionals who maintain strict tolerances often verify dimensions using Measuring & Inspection Tools before moving to finishing passes. To extend service life, Industrial Shed’s Tool & Equipment Care Services cover re-grinding & re-coating for long-term cost efficiency.

With Sutton’s HSS-Co8 build & DIN-standard accuracy, you get a roughing tool that withstands high heat, maintains cutting integrity & performs shift after shift without compromise.

► Same-day dispatch on stocked Sutton Tools products
► Bulk trade supply & competitive account pricing
► Expert local advice from our Mornington Peninsula team
► Australia-wide delivery backed by reliable freight partners

Frequently Asked Questions

They’re designed for aggressive stock removal in steel, stainless & hard alloys before finishing passes.

Cobalt increases heat resistance, allowing higher cutting speeds & longer tool life.

Yes. Sutton’s roughing cobalt endmills are engineered for stability & chip control in CNC or manual setups.

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