NBN ISO 17543-1:2021

This document specifies, with reference to the ISO 230 series, some families of tests for accessory
spindle heads used on machining centres or numerically controlled milling machines, etc., where
applicable, with horizontal spindle (i.e. horizontal Z-axis). The tests considered in this document are
also applicable to manual indexing heads.
This document establishes the tolerances or maximum acceptable values for the test results
corresponding to general purpose and normal accuracy spindle heads used on different types of
machines.
This document specifies several sets of procedures for geometric tests which can be carried out on
different types of spindle heads for comparison, acceptance, maintenance, adjustments or any other
purpose.
Grinding heads and facing heads are not included in the scope of this document.
This document deals only with the verification of geometric and positioning accuracy of the accessory
spindle heads and does not apply to:
— the testing of the machine’s head(s) operation (e.g. vibration, abnormal sound noise level, stick slip
motion of components);
— the machine’s spindle head(s) characteristics (e.g. speeds, feeds and accelerations) which are
generally checked separately; or
— the verification of the machining capability under power.
Tests concerning the accuracy of finished test pieces are dealt with in other ISO standards.