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NTK Cutting Tools Expands CUT DUO Lineup with 2.5 mm Parting Holder

Komaki City, November 2025

NTK Cutting Tools has announced the addition of a new holder to its CUT DUO series for parting operations, featuring an insert width of 2.5 mm and supporting a maximum parting diameter of Ø25.4 mm.

The new lineup, compared to the previous model (maximum parting diameter Ø34.0 mm), has been optimized for improved rigidity, delivering superior stability and precision.

The polished insert relief surface not only enhances cutting sharpness but also reduces cutting resistance, which contributes to extended tool life.

The holder also supports internal coolant supply, which significantly reduces tool wear and improves chip evacuation, ensuring smooth and trouble-free machining over the long term.

Key features:

  • Improved rigidity for small-diameter cutting
    Optimized tool geometry provides excellent stability and precision in small-diameter workpiece machining.

  • Improved tool life and chip evacuation with internal coolant supply
    Continuous coolant delivery to the cutting edge minimizes wear and ensures long-term stable machining.

Availability & support

CUT DUO Series is now available through all NTK sales channels.


For more details, contact your local NTK representative:
Global Locations – NTK Cutting Tools

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