Assemblies, circuit boards or inserts specially designed for machine tools controlled in this annex: a.  Spindle assemblies, consisting of spindles and bearings as a minimal assembly, with radial (‘run-out’) or axial (‘camming’) axis motion in one revolution of the spindle less (better) than 0,0006  mm total indicator reading (TIR); b.  Single point diamond cutting tool inserts, having all of the following characteristics: 1.  Flawless and chip-free cutting edge when magnified 400 times in any direction; 2.  Cutting radius from 0,1  to 5 mm inclusive; and 3.  Cutting radius out-of-roundness less (better) than 0,002  mm TIR. c.  Specially designed printed circuit boards with mounted components capable of upgrading, according to the manufacturer’s specifications, ‘numerical control’ units, machine tools or feed-back devices to or above the levels specified in this Annex. Technical Note: This entry does not control measuring interferometer systems, without closed or open loop feedback, containing a laser to measure slide movement errors of machine-tools, dimensional inspection machines or similar equipment.

Parts and accessories suitable for use solely or principally with the machines of headings 8456 to 8465, incl. work or tool holders, self-opening dieheads, dividing heads and other special attachments for the machines, n.e.s.; tool holders for any type of tool for working in the hand

Work holders for other machine tools

Program information