prBAS ISO 12164-2:2025

This document specifies dimensions for receivers with taper and flange contact surfaces for hollow taper shanks (HSK) in accordance with ISO 12164-1 to be applied on machine tools (e.g. for turning, drilling, milling, grinding and combinations of them). This document specifies three types of receivers: —     type A for automatic tool change; —     type C for manual tool change only, via radial holes in both the receiver and the tool shank; —     type E for automatic tool change. NOTE 1        The receivers of types A, C and E fit the HSK shanks of types A, AB, C, CB and EB (according to ISO 12164-1). NOTE 2        HSK shanks of types A, AB and EB can also be changed manually.