NTK launches B5K and B6K hard turning inserts

NTK’s range of PVD TiCN coated B5K and B6K inserts have been created to improve performance when conducing high speed turning of hardened steel, grey cast iron, ductile cast iron and steel rolls.

The B5K grade is designed for the continuous-to-light interrupted machining of hardened steel, although its geometry also makes it suitable for the finish machining of ductile cast iron. For more robust machining demands, the B6K complements the B5K with its ability to conduct medium-to-heavy interrupted machining of hardened steel.

Performance data for the B5K grade includes cutting speeds in the region of 200 m/min with depths of cut up to 0.2 mm. For heavier cutting parameters, the B6K has the capability to run at cutting speeds beyond 220 m/min with depths of cut of up to 0.2 mm at feed rates of 0.08 mm/rev.