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ISO 26623-1:2020

Polygonal taper interface with flange contact surface — Part 1: Dimensions and designation of shanks ISO 26623-1:2020

Publication date:   Nov 24, 2020

General information

90.60   Close of review   Mar 5, 2026

ISO

ISO/TC 29/SC 9 Tools with defined cutting edges, holding tools, cutting items, adaptive items and interfaces

International Standard

25.060.20   Dividing and tool-workpiece holding devices

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Published

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Scope

This document specifies dimensions for polygonal taper interfaces with flange contact surface — polygon shanks for automatic and manual tool exchange to be applied on machine tools (e. g. turning machines, drilling machines, milling machines and turn/milling centres as well as grinding machines). A range of shank sizes is specified.
These shanks incorporate a grooved flange to enable automatic tool exchange. The clamping can be realized by a circular groove using clamping segments or internal screw threads using centre-bolts.
The torque is transmitted by form lock (polygon).

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 26623-1:2014

NOW

PUBLISHED
ISO 26623-1:2020
90.60 Close of review
Mar 5, 2026




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