All NTK cutting tools are manufactured at our plant in Komaki, Japan.
Our turning and milling tools for machining with ceramic or CBN tools are manufactured in Europe. Tool holders for precision cutting tools (carbide, cermet, PKD) are manufactured in Japan.


Our products are subject to the highest quality standards and are certified according to DIN 9001 and DIN 14001.
Our continuously high-quality controls ensure this quality.

Polycrystalline cubic boron nitride composites (PCBN) are produced by sintering CBN particles and various ceramics. This results in a very hard, temperature-resistant and chemically extremely stable cutting material.

CBN is the second hardest known material after synthetic diamond. CBN tools are used for machining hardened steels because they offer a cost-effective alternative to grinding processes.

Further applications are machining of cast iron and gray cast iron as well as cold and hot work steels. CBN is also increasingly used for machining of super alloys (nickel and cobalt alloys).

About us

NGK Sparkplug Europe GmbH in Ratingen Germany has been in existence since the end of the seventies and is the European headquarter of the Japanese group "NGK Spark Plugs Co.Ltd", with around 12,000 employees, who were already established in the mid-1930s.

NTK Cutting Tools


  • NGK Spark Plug Europe GmbH
  • Harkortstrasse 41
  • D-40880 Ratingen