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CNC turning: Insert nomenclature details

Written By Dasarathi G V

|

November 8, 2025

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CNC: Inserts ISO nomenclature – what’s important, and what’s not

To cut metal profitably, there are in fact only 3 parameters that you really need to understand to select the right insert for your application. These are the numbers marked in red in the above example. The others, like the insert shape and cutting edge length, are automatically decided based on the holder that you are using. In the table below, you have to use your brain only in selecting the parameters where there is a brain in the row.

This document has the details of each parameter in the name.

More (actually prior) reading Positive, Negative inserts Insert coatings – simple explanation

Pics. and Text source: CADEM NCyclopedia multimedia CNC training software.

Author

Dasarathi G V

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Dasarathi has extensive experience in CNC programming, tooling, and managing shop floors. His expertise extends to the architecture, testing, and support of CAD/CAM, DNC, and Industry 4.0 systems.

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