JJ Tools, which has a lineup of over 10,000 products including end mills for CBN and SUS machining, have participated in SIMTOS 2018 for graphite machining end mills, composite material machining end mills, SUS machining end mills, G-TAC coated end mills, and carbide finishing inserts. Various products were exhibited.

Among the end mill products of JJ Tools, the rib ball end mill for heavy-duty cutting with two blades is a workpiece machining end mill for various materials such as medium-low hardness steel (HRC52 or less), pre-hardened steel series, carbon steel, mold steel, etc. and it has a high content of silicon-based coating (Si) so has excellent abrasion resistance. It is suitable for machining a wide range of workpieces, and able to minimize damage to the end mill by adopting fine-grained cemented carbide with high tensile strength.

And in the case of the carbide two-edged JJ ball insert for high hardness machining, high hardness steel (HRC62), pre-hardened steel series, and graphite, which is suitable for machining a wide area of work material.

JJ Tools, a cutting tool manufacturer established in 1997, is a domestic small giant with unrivaled technology and market share in the production of ultra-precision end mills.

JJ Tools has a high proportion of production of ultra-small end mills. An end mill is an ultra-precision cutting tool that cuts metal into various shapes. It is mainly used to cut automobiles, trains, and aircraft bodies and parts, and is also essential for making molds for high-tech products such as smartphones and robots. 80% of total sales and 50% of overseas exports come from micro end mills. The technological of JJ tools is comparable to that of the top ranked company (YG1) in Korea.