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CoroTurn® 300

Chip control and long and predictable tool life

High precision coolant from above controls the chip breaking for secure machining, while under coolant controls the temperature for long and predictable tool life. The coolant also have positive effects on surface quality.

High-quality surfaces

To achieve the highest quality of surfaces, the key is to prevent cutting forces from causing micro-movements of the insert. iLock®, an interface between insert and holder, is developed to bridge this challenge.

Easy tool change for maximized production time

Coromant Capto® interface or QS™ shanks enable quick tool change and easy coolant connection for maximized production time.

View more features
  • Geometries –L4 and -M5 are designed for excellent chip breaking within their respective application areas.
  • Inserts in steel grades GC4425 and GC4415 with Inveio® technology for high wear resistance and long tool life
  • Stable iLock® insert clamping and close tolerances ensure high accuracy and indexing repeatability (within ±0.05 mm (±.002 inch))
  • Shim works as distance between the insert and tool holder, protecting the tool holder
  • The clamp in combination with the insert seat make the insert to be self-locking
  • Tailor made options for tool holders

Find your tool and buy

Application area

External operations

  • Longitudinal and face turning
  • Finishing to medium
  • Machine types: turning centres and multi-task machines


  • Steel

Product range

Coromant Capto®

Tool holders size: C4, C5, C6

QS™ shanks

Sizes: 2020, 2525, 12(3/4”), 16 (1")

Coromant Capto for multi-task machines

Tool holder sizes: C5, C6

Eight-edged inserts

Grades: GC4425, GC4415 Geometries: -L4, -M5, -M5W Insert shape: 80 degree corner

Eight-edged smartness

The eight-edged inserts of CoroTurn® 300 ensure good heat transformation for predictable performance and wear. More edges also means fewer inserts which in turn means better control of the inventory. The geometries are designed for excellent chip breaking within their respective application areas. Last but not least; the eight-edged insert design means less carbide per edge which means less material to recycle and waste. Good for you and for the environment.


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Demo: Turning with CoroTurn® 300

See CoroTurn® 300 in face- and longitudinal turning operations and the result after using all eight edges.

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Get to know CoroTurn® 300

See how to change inserts, connect coolant and other valuable things about CoroTurn® 300 in this animation.

How to handle CoroTurn® 300

Find handling instructions, recommendations and learn how to get the best out of coolant

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