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Coromant EH

Access with shanks

Shanks in different lengths and materials enable you to bore hard-to-access features with ease.

Productivity with integrated machine adaptors

​​The short gauge length of an integrated machine adaptor plus cutter head makes it possible to increase productivity even in small, vibration-sensitive machines.​

Clearance and reach

​​The flexible range of undersized shanks in various lengths enables milling of deep shoulders with stability and clearance.​

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  • ​​​​Great tooling flexibility – choose from an extensive variety of heads, adaptors and shanks
  • Reduced tool inventory with standardized tools minimizing machine downtime
  • Excellent tool utilization and easy handling thanks to the reliable and accurate coupling between head and shank
  • The high rigidity of the short tool assembly makes it possible to increase cutting depths without losing stability
  • Silent Tools™ adaptor with Coromant EH interface for machining with long overhangs

Find your tool and buy

Modular system for small diameters

The modular system Coromant EH enables you to get the most out of your cutting edge. Get the required reach and accessibility with shanks and modular adaptors. In short overhang applications, it can be possible to increase your productivity with integrated machine adaptors.

The modularity eliminates the need for a separate tool for each machine, component and feature. Combine different tool holders and cutter heads to get an optimized tooling solution for all your machining.

The Coromant EH coupling is based on a centering screw that facilitates quick mounting of heads. The coupling has a physical stop which makes it easy to feel when the head is correctly tightened and helps to not overstress the clamping.​

Application and tool variants

Large machining centres

Use undersized shanks for stability and clearance when machining with long overhang.


Heavy metal

Solid carbide


Small to medium machining centres

The short tool assembly consisting only of the integrated machine adaptor and cutter head gives high productivity when the gauge line is critical.

Steep taper



Medium to large machining centres and multi-task machines

Modularity with Coromant Capto® in different lengths offers accessibility for hard-to-reach features.

Coromant Capto®


Turning centres with driven tool holders

The short tool assembly consisting only of the adaptor and head gives high productivity when the gauge line​ is critical or the swing diameter is limited.

Coromant Capto®

ER collet


Shoulder and slot milling

  1. CoroMill® 316
    High metal removal rates and large engagements
  2. CoroMill® 390
    Versatile concept perfect for mixed production
  3. CoroMill® 490
    Economical four-edged concept


Profile milling

  1. CoroMill® 316
    Superb surface finish and high productivity
  2. CoroMill® 216
    Large cutting-depth capacity
  3. CoroMill® 300
    Round insert cutters


Face milling

  1. CoroMill® 316
    High feed face milling
  2. CoroMill® 490
    General face milling
  3. CoroMill® 415
    High feed face milling


Chamfer milling

  1. CoroMill® 495
    Front and back chamfers
  2. CoroMill® 316
    15, 30, 45, 49 and 60 degree convex radius chamfers



  1. CoroBore® 825
    Fine boring, hole diameter 19–36 mm (0.748–1.417 inch)
  2. CoroBore® 824
    Fine boring, hole diameter 1–20 mm (0.039–0.787 inch)
  3. CoroBore® BR10
    Rough back boring
  4. CoroBore® BR20
    Rough boring


Solutions are available for use of solid carbide milling tools, drills and taps with Coromant EH adaptors.



Solid carbide milling heads

Versatile in the widest sense of the word, CoroMill® 316 can be applied for high feed face milling, slot milling, helical interpolation, shoulder milling, profile milling and chamfer milling.

CoroMill® 390 with size 07 inserts

CoroMill® 390 with size 07 inserts combines all of our milling expertise into one versatile milling tool.

Twin-edge rough boring tools

CoroBore® BR20 offers you secure and productive rough boring. Combined with Coromant EH coupling, it is a flexible solution for rough boring with small diameter tools.

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