Tungaloy 6817929 Pcbn Turning Insert CNGA432 BX930

Product Description

The TUNGALOY 6817929 is a polycrystalline cubic boron nitride (PCBN) turning insert in the CNGA432 geometry with BX930 grade, designed for precision finishing operations on cast iron and hardened materials. The insert features an 80-degree diamond (rhombic) shape, a negative rake angle, a honed cutting edge, and a flat-top chip breaker. With a 0.5 inch inscribed circle, a 0.0315 inch corner radius, and an insert thickness of 0.1875 inches, this uncoated PCBN insert delivers high wear resistance in demanding turning, facing, and boring applications. It is installed by machinists and CNC turning specialists in production environments where tool life and surface finish consistency are critical.

This insert is suited for finishing passes on cast iron (ISO material group K) and hardened materials (ISO material group H) where high wear resistance is required. Its 2QP Mini-Tip series design supports multi-use application across turning, facing, and boring operations. The maximum depth of cut is 0.0197 inches, making it optimized for light, precise finishing cuts rather than heavy roughing. The neutral hand orientation allows flexible use in standard CNGA-style toolholders.

Key Features

• PCBN (polycrystalline cubic boron nitride) insert material for high wear resistance in hard and abrasive workpieces
• BX930 manufacturer grade optimized for cast iron and hardened material finishing
• 80-degree diamond (rhombic) insert shape, ANSI/ISO standard geometry CNGA432 / CNGA120408
• Uncoated bright finish with honed cutting edge for consistent, repeatable surface quality
• Two cutting edges per insert; compatible with clamp and pin insert holding methods
• Multi-use capable for turning, facing, and boring in a single insert geometry

Compatibility

Designed for use in CNGA-style toolholders accepting a 432 size insert. Compatible with standard clamp and pin holding systems. Suitable for CNC and manual turning centers used in cast iron and hardened material finishing applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and all power is isolated before indexing or replacing the insert. Seat the insert firmly against the toolholder pocket using the appropriate clamp or pin mechanism per the toolholder manufacturer's instructions. Verify the cutting edge is secure and the insert is properly indexed before resuming machine operation.