Widia 6550390 Boring Cartridge Insert Holder Tool Cutter

The WIDIA 6550390 Boring Cartridge Insert Holder Tool Cutter is an industrial indexable boring cartridge holder designed for precision internal diameter machining in CNC environments. It accepts indexable carbide inserts and mounts on a boring bar or cartridge system, delivering stable insert retention and consistent penetration depth for accurate internal boring and production turning operations. Compatible with CNC lathes and turning centers, this tool supports CNC boring and internal turning in aerospace manufacturing, automotive machining, heavy equipment production, and other precision engineering applications where tight tolerances and smooth finishes matter. It uses a boring bar or cartridge mount and is built from industrial-grade hardened tool steel for continuous use in CNC and manual machining environments.