Cutters and cutter inserts, equipped with the cutting plates on the base of the
polycrystalline cubic boron nitride (PCBN), are designed for the roughing, half-finishing and finishing work of black metals, cast irons, hard steels, nickel- and titan-containing hardly-working alloys, built-up, hardened and strengthened surfaces.
The fields of exploitation are: automobile, aircraft and tractor industries, instrumental manufacturing on the operations of smooth and dashed turning pieces of various designation.
Cutters with PCBN can successfully process the pieces with gas-thermal coatings
from powders of various base, for instance Ni-Cr-B-Si system, being applied on their
surface. The use of cutters with PCBN makes it possible to process the pieces with coatings with high performance, and to refuse from grinding in a number of cases. Processed surfaces have a high quality grade and low value of the asperity parameter.

By their hardness they predominate the cutters from fastcutting steel by 5..15 times, the cutters from metal-ceramics by 3..5 times.