The ISO designation for Turning toolholders

The ISO designation system for toolholders for turning applications

For turning toolholders, as for indexable inserts, there is a similar ISO designation system.

The system is designed so that each important feature and dimension of the toolholder is shown using a code system. This becomes the name of the toolholder.

This system has several advantages:

Unique naming of a toolholder (supplier independent)
All important features and dimensions are clearly stated in the name
Some code positions relate to the insert that can be used in the toolholder

It's important to remember that the ISO designation system is not a system that standardizes the quality of the toolholders.

Here is an example for external turning toolholders (metric)

ISO standards Turning

Here is an example for internal turning toolholders (metric)

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