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CoroMill® 490

True 90° cuts without sharp steps

​Precise cutter body and insert location along with a low-vibration machining process provide true 90° shoulders without mismatch.

High precision and good tolerances

​Sharp edge lines and burr-free, smooth profiles, which also efficiently reduces the need for a finishing operation.

Positive concept with light cutting action

​The light cutting performance provides an excellent surface finish and optimal utilization of low-powered machine tools. This also facilitates use of the cutter on extended tool assemblies.

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  • ​​High productivity with outstanding insert geometries and grades
  • Undersized shanks for larger diameter cutters, using 8 mm (0.315 inch) inserts, enable these cutters to fit into smaller tool holders
  • Oversized versions enhance the accessibility and provide natural clearance to tight fixtures
  • Coromant EH exchangeable head offers reduced tool inventory, great tooling flexibility and a secure performance

Find your tool and buy

Application area

  • General and repeated shoulder milling
  • Face milling
  • Edging
  • Plunge milling
  • Slot milling
  • Roughing to finishing
  • Steel
  • Stainless steel
  • Cast iron
  • Non-ferrous metals
  • Heat resistant super alloys
  • Hardened materials

Product range

Cutter body

End mill: 20–40 mm (0.750–1.50 inch)
Square shoulder face mill: 40–250 mm (1.50–10.00 inch)
Pitches: Coarse (L), Close (M), Extra close (H)
Through coolant on all cutter bodies <125 mm (5 inch)


Insert sizes: 08 and 14
Radii: 0.4–2.0 mm (0.016–0.079 inch)
Grades: Cemented carbide, ceramic and cubic boron nitride (CBN) inserts
Geometries: Light, medium and heavy geometries

Tool holding

Couplings: Coromant Capto®, Coromant EH, cylindrical shank, arbor, CIS arbor, Weldon, HSK

Silent Tools™ damped adaptors available for components requiring slender tool assemblies.

Milling in demanding materials

Milling in hardened steel pose a number of challenges to your machining. The cutting tool material needs to have good resistance to plastic deformation, chemical stability at high temperatures, mechanical strength and resistance to abrasive wear. CoroMill 490 is available with ceramic and CBN inserts dedicated for machining in hardened steel.

  • CC6190 is a hard silicon nitride ceramic insert for light roughing to semi finishing of chilled cast iron at stable and dry conditions
  • CB50 is a hard CBN-tipped grade for semi-finishing to finishing in stable and dry conditions. Use when dimensional stability and long tool life are crucial


Maximize your milling cutter productivity

Achieve side clearance and vertical reach with undersized Silent Tools™ adaptors when machine side interface is the same diameter as the nominal size milling cutter.

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Film: Shoulder milling with CoroMill® 490

CoroMill® 490 is your first choice for general and repeated shoulder milling. See the concept in action.

New grades optimized for steel milling

CoroMill® 490 is now available with CVD grades GC4330 and GC4340 with Inveio® technology for improved tool life and increased process security.

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