Carmex Polygon Swiss Line Insert - Back Turning - Left Hand - GB25LA30R20BLU

The Carmex Polygon Swiss Line Insert is a left-hand, back-turning cutting insert designed for Swiss-type automatic lathes. Model GB25LA30R20BLU, this tool supports high-volume, cost-efficient turning and grooving on compact machines, enabling precise external operations, profiling, threading, parting, and general turning with consistent results.

As part of Carmex’s Swiss-type tooling family, it is designed for reliability in demanding production environments. The insert works across a range of Swiss-type applications, delivering dependable performance when paired with coated holders that resist wear in tough materials, helping you maintain accurate cuts and repeatable results on every cycle.

• Grounded cutting edges: Provides stable, predictable cutting action and longer edge life for fewer re-flights and more consistent finishes.
• Inserts indexable directly on the machine: Enables quick edge changes without removing the tool, reducing setup time and minimizing downtime on high-output runs.
• Coated holders for abrasion resistance: Protects against wear in demanding materials, preserving accuracy and extending tool life between changes.

Designed for reliability and efficiency, this insert helps you streamline Swiss-type workflows—from grooving and back turning to profiling and threading. It supports fast, repeatable setups, reduces tool changes, and delivers consistent results across long production runs, giving you confidence to meet tight tolerances and schedules.